环信即时通讯单聊集成，添加好友，实现单聊

public class AppManager {

    private static Stack<Activity> mActivityStack;

    private static AppManager mAppManager;


    private AppManager() {

    }


    /**

     * 单一实例

     */

    public static AppManager getInstance() {

        if (mAppManager == null) {

            mAppManager = new AppManager();

        }

        return mAppManager;

    }


    /**

     * 添加Activity

     */

    public void addActivity(Activity activity) {

        if (mActivityStack == null) {

            mActivityStack = new Stack<Activity>();

        }

        mActivityStack.add(activity);

    }


    /**

     * 获取栈顶Activity

     */

    public Activity getTopActivity() {

        Activity activity = mActivityStack.lastElement();

        return activity;

    }


    /**

     * 结束栈顶Activity

     */

    public void killTopActivity() {

        Activity activity = mActivityStack.lastElement();

        killActivity(activity);

    }


    /**

     * 结束指定的Activity

     */

    public void killActivity(Activity activity) {

        if (activity != null) {

            mActivityStack.remove(activity);

            activity.finish();

            activity = null;

        }

    }


    /**

     * 结束指定类名的Activity

     */

    public void killActivity(Class<?> cls) {

        for (Activity activity : mActivityStack) {

            if (activity.getClass().equals(cls)) {

                killActivity(activity);

            }

        }

    }


    /**

     * 结束所有Activity

     */

    public void killAllActivity() {

        for (int i = 0, size = mActivityStack.size(); i < size; i++) {

            if (null != mActivityStack.get(i)) {

                mActivityStack.get(i).finish();

            }

        }

        mActivityStack.clear();

    }


    /**

     * 退出应用程序

     */

    public void AppExit(Context context) {

        try {

            killAllActivity();

            ActivityManager activityMgr = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);

            activityMgr.restartPackage(context.getPackageName());

            System.exit(0);

        } catch (Exception e) {}

    }

}

public abstract class BaseActivity extends Activity {


    protected Context context = null;

    protected BaseApplication mApplication;

    protected Handler mHandler;


    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        mApplication = (BaseApplication) getApplication();

        AppManager.getInstance().addActivity(this);

//      check netwotk

        context = this;

    }


    @Override

    public void onBackPressed() {

        // TODO Auto-generated method stub

        super.onBackPressed();

    }


    @Override

    protected void onDestroy() {

        // TODO Auto-generated method stub

        super.onDestroy();

    }


    @Override

    protected void onPause() {

        // TODO Auto-generated method stub

        super.onPause();

    }


    @Override

    protected void onResume() {

        // TODO Auto-generated method stub

        super.onResume();

    }


}

public class BaseApplication extends Application {


    private static final String TAG = BaseApplication.class.getSimpleName();


    private static BaseApplication mInstance = null;


    @Override

    public void onConfigurationChanged(Configuration newConfig) {

        super.onConfigurationChanged(newConfig);

    }


    /*

     * (non-Javadoc)

     * 

     * @see android.app.Application#onCreate()

     */

    @Override

    public void onCreate() {

        // TODO Auto-generated method stub

        super.onCreate();

        int pid = android.os.Process.myPid();

        String processAppName = getAppName(pid);

        // 如果app启用了远程的service，此application:onCreate会被调用2次

        // 为了防止环信SDK被初始化2次，加此判断会保证SDK被初始化1次

        // 默认的app会在以包名为默认的process name下运行，如果查到的process name不是app的process

        // name就立即返回


        if (processAppName == null

                || !processAppName.equalsIgnoreCase("com.xmliu.imsample")) {

            Log.e(TAG, "enter the service process!");

            // "com.easemob.chatuidemo"为demo的包名，换到自己项目中要改成自己包名


            // 则此application::onCreate 是被service 调用的，直接返回

            return;

        }


//      EMChat.getInstance().setAutoLogin(false);

        EMChat.getInstance().init(getApplicationContext());

        // 在做代码混淆的时候需要设置成false

        EMChat.getInstance().setDebugMode(true);

        initHXOptions();

        mInstance = this;


    }


    protected void initHXOptions() {

        Log.d(TAG, "init HuanXin Options");


        // 获取到EMChatOptions对象

        EMChatOptions options = EMChatManager.getInstance().getChatOptions();

        // 默认添加好友时，是不需要验证的true，改成需要验证false

        options.setAcceptInvitationAlways(false);

        // 默认环信是不维护好友关系列表的，如果app依赖环信的好友关系，把这个属性设置为true

        options.setUseRoster(true);

        options.setNumberOfMessagesLoaded(1);

    }


    private String getAppName(int pID) {

        String processName = null;

        ActivityManager am = (ActivityManager) this

                .getSystemService(ACTIVITY_SERVICE);

        List l = am.getRunningAppProcesses();

        Iterator i = l.iterator();

        PackageManager pm = this.getPackageManager();

        while (i.hasNext()) {

            ActivityManager.RunningAppProcessInfo info = (ActivityManager.RunningAppProcessInfo) (i

                    .next());

            try {

                if (info.pid == pID) {

                    CharSequence c = pm.getApplicationLabel(pm

                            .getApplicationInfo(info.processName,

                                    PackageManager.GET_META_DATA));

                    // Log.d("Process", "Id: "+ info.pid +" ProcessName: "+

                    // info.processName +"  Label: "+c.toString());

                    // processName = c.toString();

                    processName = info.processName;

                    return processName;

                }

            } catch (Exception e) {

                // Log.d("Process", "Error>> :"+ e.toString());

            }

        }

        return processName;

    }


    @Override

    public void onLowMemory() {

        // TODO Auto-generated method stub

        super.onLowMemory();

        Log.i(TAG, "onLowMemory");

    }


    @Override

    public void onTerminate() {

        // TODO Auto-generated method stub

        Log.i(TAG, "onTerminate");

        super.onTerminate();

    }


    public static BaseApplication getInstance() {

        return mInstance;

    }


}

public class ChatListAdapter extends BaseAdapter {


    Context mContext;

    List<ChatListData> mListData;


    public ChatListAdapter(Context mContext, List<ChatListData> mListData) {

        super();

        this.mContext = mContext;

        this.mListData = mListData;

    }


    @Override

    public int getCount() {

        // TODO Auto-generated method stub

        return mListData.size();

    }


    @Override

    public Object getItem(int arg0) {

        // TODO Auto-generated method stub

        return null;

    }


    @Override

    public long getItemId(int arg0) {

        // TODO Auto-generated method stub

        return 0;

    }


    @Override

    public View getView(int index, View cView, ViewGroup arg2) {

        // TODO Auto-generated method stub


        Holder holder;

        if (cView == null) {

            holder = new Holder();

            cView = LayoutInflater.from(mContext).inflate(

                    R.layout.chat_listview_item, null);

            holder.rAvatar = (Button) cView

                    .findViewById(R.id.listview_item_receive_avatar);

            holder.rContent = (TextView) cView

                    .findViewById(R.id.listview_item_receive_content);

            holder.chatTime = (TextView) cView

                    .findViewById(R.id.listview_item_time);

            holder.sContent = (TextView) cView

                    .findViewById(R.id.listview_item_send_content);

            holder.sAvatar = (Button) cView

                    .findViewById(R.id.listview_item_send_avatar);

            holder.sName = (TextView) cView.findViewById(R.id.name1);

            holder.sName1 = (TextView) cView.findViewById(R.id.name2);

            cView.setTag(holder);


        } else {

            holder = (Holder) cView.getTag();

        }


        holder.chatTime.setVisibility(View.GONE);


        if (mListData.get(index).getType() == 2) {

            holder.rAvatar.setVisibility(View.VISIBLE);

            holder.rContent.setVisibility(View.VISIBLE);

            holder.sName.setVisibility(View.VISIBLE);

            holder.sName.setText("您的朋友说：");

            holder.sContent.setVisibility(View.GONE);

            holder.sAvatar.setVisibility(View.GONE);

            holder.sName1.setVisibility(View.GONE);


        } else if (mListData.get(index).getType() == 1) {

            holder.rAvatar.setVisibility(View.GONE);

            holder.sName.setVisibility(View.GONE);

            holder.rContent.setVisibility(View.GONE);

            holder.sContent.setVisibility(View.VISIBLE);

            holder.sAvatar.setVisibility(View.VISIBLE);

            holder.sName1.setVisibility(View.VISIBLE);

            holder.sName1.setText("我");

        }

        holder.chatTime.setText(mListData.get(index).getChatTime());

        holder.rContent.setText(mListData.get(index).getReceiveContent());

        holder.sContent.setText(mListData.get(index).getSendContent());


        return cView;

    }


    class Holder {

        Button rAvatar;

        TextView rContent;

        TextView chatTime;

        TextView sContent;

        TextView sName;

        TextView sName1;

        Button sAvatar;

    }

}

public class FriendListAdapter extends BaseAdapter {


    Context mContext;

    List<String> mListData;


    public FriendListAdapter(Context mContext, List<String> mListData) {

        super();

        this.mContext = mContext;

        this.mListData = mListData;

    }


    @Override

    public int getCount() {

        // TODO Auto-generated method stub

        return mListData.size();

    }


    @Override

    public Object getItem(int arg0) {

        // TODO Auto-generated method stub

        return null;

    }


    @Override

    public long getItemId(int arg0) {

        // TODO Auto-generated method stub

        return 0;

    }


    @Override

    public View getView(int index, View cView, ViewGroup arg2) {

        // TODO Auto-generated method stub

        FHolder holder;

        if (cView == null) {

            holder = new FHolder();

            cView = LayoutInflater.from(mContext).inflate(

                    R.layout.friend_listview_item, null);

            holder.name = (TextView) cView

                    .findViewById(R.id.friend_listview_name);

            cView.setTag(holder);


        } else {

            holder = (FHolder) cView.getTag();

        }


        holder.name.setText(mListData.get(index));


        return cView;

    }


    class FHolder {

        TextView name;

    }

}

public class ChatListData {


    String receiveAvatar;

    String receiveContent;

    String chatTime;

    String sendAvatar;

    String sendContent;

    /**

     * 1 发送； 2接收

     */

    int type;

    /**

     * 1 发送； 2接收

     */

    public int getType() {

        return type;

    }

    /**

     * 1 发送； 2接收

     */

    public void setType(int type) {

        this.type = type;

    }


    public String getReceiveAvatar() {

        return receiveAvatar;

    }


    public void setReceiveAvatar(String receiveAvatar) {

        this.receiveAvatar = receiveAvatar;

    }


    public String getReceiveContent() {

        return receiveContent;

    }


    public void setReceiveContent(String receiveContent) {

        this.receiveContent = receiveContent;

    }


    public String getChatTime() {

        return chatTime;

    }


    public void setChatTime(String chatTime) {

        this.chatTime = chatTime;

    }


    public String getSendAvatar() {

        return sendAvatar;

    }


    public void setSendAvatar(String sendAvatar) {

        this.sendAvatar = sendAvatar;

    }


    public String getSendContent() {

        return sendContent;

    }


    public void setSendContent(String sendContent) {

        this.sendContent = sendContent;

    }


}

public class ChatListActivity extends BaseActivity {


    private EditText contentET;

    private TextView topNameTV;

    private Button sendBtn;

    private NewMessageBroadcastReceiver msgReceiver;


    private ListView mListView;

    private List<ChatListData> mListData = new ArrayList<ChatListData>();

    private ChatListAdapter mAdapter;

    private InputMethodManager imm;


    private String receiveName = null;


    @Override

    protected void onCreate(Bundle savedInstanceState) {

        // TODO Auto-generated method stub

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_chat_main);


        mHandler = new Handler() {

            @Override

            public void handleMessage(Message msg) {

                // TODO Auto-generated method stub

                super.handleMessage(msg);

                switch (msg.what) {

                case 0x00001:

                    imm.hideSoftInputFromWindow(

                            contentET.getApplicationWindowToken(), 0); // 隐藏键盘

                    mAdapter.notifyDataSetChanged(); // 刷新聊天列表

                    mListView.setSelection(mListData.size()); // 跳转到listview最底部

                    contentET.setText(""); // 清空发送内容

                    break;

                default:

                    break;

                }

            }


        };


        receiveName = this.getIntent().getStringExtra("userid");


        initView();


        topNameTV.setText(receiveName);

        // 只有注册了广播才能接收到新消息，目前离线消息，在线消息都是走接收消息的广播（离线消息目前无法监听，在登录以后，接收消息广播会执行一次拿到所有的离线消息）

        msgReceiver = new NewMessageBroadcastReceiver();

        IntentFilter intentFilter = new IntentFilter(EMChatManager

                .getInstance().getNewMessageBroadcastAction());

        intentFilter.setPriority(3);

        registerReceiver(msgReceiver, intentFilter);


        imm = (InputMethodManager) contentET.getContext().getSystemService(

                Context.INPUT_METHOD_SERVICE);


        mAdapter = new ChatListAdapter(ChatListActivity.this, mListData);

        mListView.setAdapter(mAdapter);


        initEvent();

    }


    private void initView() {

        contentET = (EditText) findViewById(R.id.chat_content);

        topNameTV = (TextView) findViewById(R.id.chat_list_name);

        sendBtn = (Button) findViewById(R.id.chat_send_btn);

        mListView = (ListView) findViewById(R.id.chat_listview);

    }


    private void initEvent() {

        // TODO Auto-generated method stub

        sendBtn.setOnClickListener(new OnClickListener() {


            @Override

            public void onClick(View arg0) {

                // TODO Auto-generated method stub

                sendMsg();

            }

        });


        contentET.setOnKeyListener(new OnKeyListener() {


            @Override

            public boolean onKey(View arg0, int keycode, KeyEvent arg2) {

                // TODO Auto-generated method stub

                if (keycode == KeyEvent.KEYCODE_ENTER

                        && arg2.getAction() == KeyEvent.ACTION_DOWN) {

                    sendMsg();

                    return true;

                }

                return false;

            }

        });

    }


    void sendMessageHX(String username, final String content) {

        // 获取到与聊天人的会话对象。参数username为聊天人的userid或者groupid，后文中的username皆是如此

        EMConversation conversation = EMChatManager.getInstance()

                .getConversation(username);

        // 创建一条文本消息

        EMMessage message = EMMessage.createSendMessage(EMMessage.Type.TXT);

        // // 如果是群聊，设置chattype,默认是单聊

        // message.setChatType(ChatType.GroupChat);

        // 设置消息body

        TextMessageBody txtBody = new TextMessageBody(content);

        message.addBody(txtBody);

        // 设置接收人

        message.setReceipt(username);

        // 把消息加入到此会话对象中

        conversation.addMessage(message);

        // 发送消息

        EMChatManager.getInstance().sendMessage(message, new EMCallBack() {


            @Override

            public void onError(int arg0, String arg1) {

                // TODO Auto-generated method stub

                Log.i("TAG", "消息发送失败");

            }


            @Override

            public void onProgress(int arg0, String arg1) {

                // TODO Auto-generated method stub

                Log.i("TAG", "正在发送消息");

            }


            @Override

            public void onSuccess() {

                // TODO Auto-generated method stub

                Log.i("TAG", "消息发送成功");

                ChatListData data = new ChatListData();

                data.setSendContent(content);

                data.setType(1);

                mListData.add(data);

                mHandler.sendEmptyMessage(0x00001);

            }

        });

    }


    private class NewMessageBroadcastReceiver extends BroadcastReceiver {

        @Override

        public void onReceive(Context context, Intent intent) {

            // 注销广播

            abortBroadcast();


            // 消息id（每条消息都会生成唯一的一个id，目前是SDK生成）

            String msgId = intent.getStringExtra("msgid");

            // 发送方

            String username = intent.getStringExtra("from");

            // 收到这个广播的时候，message已经在db和内存里了，可以通过id获取mesage对象

            EMMessage message = EMChatManager.getInstance().getMessage(msgId);

            EMConversation conversation = EMChatManager.getInstance()

                    .getConversation(username);


            MessageBody tmBody = message.getBody();


            ChatListData data = new ChatListData();

            data.setReceiveContent(((TextMessageBody) tmBody).getMessage());

            data.setType(2);

            mListData.add(data);

            mHandler.sendEmptyMessage(0x00001);


            Log.i("TAG", "收到消息：" + ((TextMessageBody) tmBody).getMessage());

            // 如果是群聊消息，获取到group id

            if (message.getChatType() == ChatType.GroupChat) {

                username = message.getTo();

            }


            if (!username.equals(username)) {

                // 消息不是发给当前会话，return

                return;

            }

        }

    }


    @Override

    protected void onDestroy() {

        // TODO Auto-generated method stub

        super.onDestroy();

        unregisterReceiver(msgReceiver);


    }


    private void sendMsg() {

        String content = contentET.getText().toString().trim();

        if (TextUtils.isEmpty(content)) {

            Toast.makeText(getApplicationContext(), "请输入发送的内容",

                    Toast.LENGTH_SHORT).show();

        } else {

            sendMessageHX(receiveName, content);

        }

    }


}

public class ChatLoginActivity extends BaseActivity {


    private EditText mUsernameET;

    private EditText mPasswordET;

    private TextView mPasswordForgetTV;

    private Button mSigninBtn;

    private TextView mSignupTV;

    private CheckBox mPasswordCB;


    @Override

    protected void onCreate(Bundle savedInstanceState) {

        // TODO Auto-generated method stub

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_chat_login);


        mUsernameET = (EditText) findViewById(R.id.chat_login_username);

        mPasswordET = (EditText) findViewById(R.id.chat_login_password);

        mPasswordForgetTV = (TextView) findViewById(R.id.chat_login_forget_password);

        mSigninBtn = (Button) findViewById(R.id.chat_login_signin_btn);

        mSignupTV = (TextView) findViewById(R.id.chat_login_signup);

        mPasswordCB = (CheckBox) findViewById(R.id.chat_login_password_checkbox);


        if (EMChat.getInstance().isLoggedIn()) {

            Log.d("TAG", "已经登陆过");

            EMGroupManager.getInstance().loadAllGroups();

            EMChatManager.getInstance().loadAllConversations();

            startActivity(new Intent(ChatLoginActivity.this,

                    MainActivity.class));

        }


        mPasswordCB.setOnCheckedChangeListener(new OnCheckedChangeListener() {


            @Override

            public void onCheckedChanged(CompoundButton arg0, boolean arg1) {

                // TODO Auto-generated method stub

                if (arg1) {

                    mPasswordCB.setChecked(true);

                    //动态设置密码是否可见

                    mPasswordET

                            .setTransformationMethod(HideReturnsTransformationMethod

                                    .getInstance());

                } else {

                    mPasswordCB.setChecked(false);

                    mPasswordET

                            .setTransformationMethod(PasswordTransformationMethod

                                    .getInstance());

                }

            }

        });


        mSigninBtn.setOnClickListener(new OnClickListener() {


            @Override

            public void onClick(View arg0) {

                // TODO Auto-generated method stub

                final String userName = mUsernameET.getText().toString().trim();

                final String password = mPasswordET.getText().toString().trim();


                if (TextUtils.isEmpty(userName)) {

                    Toast.makeText(getApplicationContext(), "请输入用户名",

                            Toast.LENGTH_SHORT).show();

                } else if (TextUtils.isEmpty(password)) {

                    Toast.makeText(getApplicationContext(), "请输入密码",

                            Toast.LENGTH_SHORT).show();

                } else {

                    EMChatManager.getInstance().login(userName, password,

                            new EMCallBack() {// 回调

                                @Override

                                public void onSuccess() {

                                    runOnUiThread(new Runnable() {

                                        public void run() {

                                            EMGroupManager.getInstance()

                                                    .loadAllGroups();

                                            EMChatManager.getInstance()

                                                    .loadAllConversations();

                                            Log.d("main", "登陆聊天服务器成功！");

                                            Toast.makeText(

                                                    getApplicationContext(),

                                                    "登陆成功", Toast.LENGTH_SHORT)

                                                    .show();

                                            startActivity(new Intent(

                                                    ChatLoginActivity.this,

                                                    MainActivity.class));

//                                          mApplication.mSharedPreferences

//                                                  .edit()

//                                                  .putString("loginName",

//                                                          userName).commit();

                                        }

                                    });

                                }


                                @Override

                                public void onProgress(int progress,

                                        String status) {


                                }


                                @Override

                                public void onError(int code, String message) {

                                    if (code == -1005) {

                                        message = "用户名或密码错误";

                                    }

                                    final String msg = message;

                                    runOnUiThread(new Runnable() {

                                        public void run() {

                                            Log.d("main", "登陆聊天服务器失败！");

                                            Toast.makeText(

                                                    getApplicationContext(),

                                                    msg, Toast.LENGTH_SHORT)

                                                    .show();

                                        }

                                    });

                                }

                            });

                }

            }

        });


        mSignupTV.setOnClickListener(new OnClickListener() {


            @Override

            public void onClick(View arg0) {

                // TODO Auto-generated method stub

                startActivity(new Intent(ChatLoginActivity.this,

                        ChatRegisterActivity.class));

            }

        });

    }


    @Override

    public boolean onKeyDown(int keyCode, KeyEvent event) {

        if (keyCode == KeyEvent.KEYCODE_BACK) {


            new AlertDialog.Builder(ChatLoginActivity.this)

                    .setTitle("应用提示")

                    .setMessage(

                            "确定要退出"

                                    + getResources().getString(

                                            R.string.app_name) + "客户端吗？")

                    .setPositiveButton("确定",

                            new DialogInterface.OnClickListener() {

                                @Override

                                public void onClick(DialogInterface dialog,

                                        int which) {

                                    AppManager.getInstance().AppExit(

                                            ChatLoginActivity.this);

                                    ChatLoginActivity.this.finish();

                                }

                            })

                    .setNegativeButton("取消",

                            new DialogInterface.OnClickListener() {

                                public void onClick(DialogInterface dialog,

                                        int whichButton) {

                                }

                            }).show();

        }


        return super.onKeyDown(keyCode, event);

    }

}

public class ChatRegisterActivity extends BaseActivity {


    private EditText mUsernameET;

    private EditText mPasswordET;

    private EditText mCodeET;

    private Button mSignupBtn;

    private Handler mHandler;

    private CheckBox mPasswordCB;

    private TextView mBackTV;

    private ImageView mCodeIV;

    private String currCode;


    @Override

    protected void onCreate(Bundle savedInstanceState) {

        // TODO Auto-generated method stub

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_chat_register);


        mHandler = new Handler() {

            public void handleMessage(android.os.Message msg) {

                switch (msg.what) {

                case 1000:

                    Toast.makeText(getApplicationContext(), "注册成功",

                            Toast.LENGTH_SHORT).show();

                    break;

                case 1001:

                    Toast.makeText(getApplicationContext(), "网络异常，请检查网络！",

                            Toast.LENGTH_SHORT).show();

                    break;

                case 1002:

                    Toast.makeText(getApplicationContext(), "用户已存在！",

                            Toast.LENGTH_SHORT).show();

                    break;

                case 1003:

                    Toast.makeText(getApplicationContext(), "注册失败，无权限",

                            Toast.LENGTH_SHORT).show();

                    break;

                case 1004:

                    Toast.makeText(getApplicationContext(),

                            "注册失败: " + (String) msg.obj, Toast.LENGTH_SHORT)

                            .show();

                    break;


                default:

                    break;

                }

            };

        };


        mUsernameET = (EditText) findViewById(R.id.chat_register_username);

        mPasswordET = (EditText) findViewById(R.id.chat_register_password);

        mCodeET = (EditText) findViewById(R.id.chat_register_code);

        mSignupBtn = (Button) findViewById(R.id.chat_register_signup_btn);

        mPasswordCB = (CheckBox) findViewById(R.id.chat_register_password_checkbox);

        mBackTV = (TextView) findViewById(R.id.chat_register_back);

        mCodeIV = (ImageView) findViewById(R.id.chat_register_password_code);


        mCodeIV.setImageBitmap(IdentifyCode.getInstance().createBitmap());

        currCode = IdentifyCode.getInstance().getCode();


        mCodeIV.setOnClickListener(new OnClickListener() {


            @Override

            public void onClick(View arg0) {

                // TODO Auto-generated method stub

                mCodeIV.setImageBitmap(IdentifyCode.getInstance()

                        .createBitmap());

                currCode = IdentifyCode.getInstance().getCode();

                Log.i("TAG", "currentCode==>" + currCode);

            }

        });


        mBackTV.setOnClickListener(new OnClickListener() {


            @Override

            public void onClick(View arg0) {

                // TODO Auto-generated method stub

                finish();

            }

        });

        mPasswordCB.setOnCheckedChangeListener(new OnCheckedChangeListener() {


            @Override

            public void onCheckedChanged(CompoundButton arg0, boolean arg1) {

                // TODO Auto-generated method stub

                if (arg1) {

                    mPasswordCB.setChecked(true);

                    mPasswordET

                            .setTransformationMethod(HideReturnsTransformationMethod

                                    .getInstance());

                } else {

                    mPasswordCB.setChecked(false);

                    mPasswordET

                            .setTransformationMethod(PasswordTransformationMethod

                                    .getInstance());

                }

            }

        });

        mSignupBtn.setOnClickListener(new OnClickListener() {


            @Override

            public void onClick(View arg0) {

                // TODO Auto-generated method stub

                final String userName = mUsernameET.getText().toString().trim();

                final String password = mPasswordET.getText().toString().trim();

                final String code = mCodeET.getText().toString().trim();


                if (TextUtils.isEmpty(userName)) {

                    Toast.makeText(getApplicationContext(), "请输入用户名",

                            Toast.LENGTH_SHORT).show();

                } else if (TextUtils.isEmpty(password)) {

                    Toast.makeText(getApplicationContext(), "请输入密码",

                            Toast.LENGTH_SHORT).show();

                } else if (TextUtils.isEmpty(code)) {

                    Toast.makeText(getApplicationContext(), "请输入验证码",

                            Toast.LENGTH_SHORT).show();

                } else if (!code.equals(currCode.toLowerCase())) {

                    Toast.makeText(getApplicationContext(), "验证码输入不正确",

                            Toast.LENGTH_SHORT).show();

                } else {

                    new Thread(new Runnable() {


                        @Override

                        public void run() {

                            // TODO Auto-generated method stub

                            try {

                                // 调用sdk注册方法

                                EMChatManager.getInstance()

                                        .createAccountOnServer(userName,

                                                password);

                                mHandler.sendEmptyMessage(1000);

                            } catch (final EaseMobException e) {

                                // 注册失败

                                Log.i("TAG", "getErrorCode:" + e.getErrorCode());

                                int errorCode = e.getErrorCode();

                                if (errorCode == EMError.NONETWORK_ERROR) {

                                    mHandler.sendEmptyMessage(1001);

                                } else if (errorCode == EMError.USER_ALREADY_EXISTS) {

                                    mHandler.sendEmptyMessage(1002);

                                } else if (errorCode == EMError.UNAUTHORIZED) {

                                    mHandler.sendEmptyMessage(1003);

                                } else {

                                    Message msg = Message.obtain();

                                    msg.what = 1004;

                                    msg.obj = e.getMessage();

                                    mHandler.sendMessage(msg);

                                }

                            }

                        }

                    }).start();

                }

            }

        });

    }

}

public class MainActivity extends BaseActivity {


    private ListView mListView;

    private Button mAddBtn;

    private Button logoutBtn;

    private View addView;

    private EditText mIdET;

    private EditText mReasonET;

    private TextView mUserTV;

    private TextView mGoTV;

    private FriendListAdapter mAdapter;

    private List<String> userList = new ArrayList<String>();


    /* 常量 */

    private final int CODE_ADD_FRIEND = 0x00001;


    @Override

    protected void onDestroy() {

        // TODO Auto-generated method stub

        super.onDestroy();

    }


    @Override

    protected void onCreate(Bundle savedInstanceState) {

        // TODO Auto-generated method stub

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_chat_friends);


        mHandler = new Handler() {

            @Override

            public void handleMessage(Message msg) {

                // TODO Auto-generated method stub

                super.handleMessage(msg);

                switch (msg.what) {

                case CODE_ADD_FRIEND:

                    Toast.makeText(getApplicationContext(), "请求发送成功，等待对方验证",

                            Toast.LENGTH_SHORT).show();

                    break;


                default:

                    break;

                }

            }


        };


        EMContactManager.getInstance().setContactListener(

                new MyContactListener());

        EMChat.getInstance().setAppInited();


        mListView = (ListView) findViewById(R.id.chat_listview);

        mAddBtn = (Button) findViewById(R.id.chat_add_btn);

        mUserTV = (TextView) findViewById(R.id.current_user);

        mGoTV = (TextView) findViewById(R.id.friend_list_go);

        logoutBtn = (Button) findViewById(R.id.chat_logout_btn);


        mUserTV.setText(EMChatManager.getInstance().getCurrentUser());


        initList();


        mAddBtn.setOnClickListener(new OnClickListener() {


            @Override

            public void onClick(View arg0) {

                // TODO Auto-generated method stub

                addView = LayoutInflater.from(MainActivity.this).inflate(

                        R.layout.chat_add_friends, null);

                mIdET = (EditText) addView

                        .findViewById(R.id.chat_add_friend_id);

                mReasonET = (EditText) addView

                        .findViewById(R.id.chat_add_friend_reason);

                new AlertDialog.Builder(MainActivity.this)

                        .setTitle("添加好友")

                        .setView(addView)

                        .setPositiveButton("确定",

                                new DialogInterface.OnClickListener() {

                                    @Override

                                    public void onClick(DialogInterface dialog,

                                            int which) {

                                        dialog.dismiss();

                                        String idStr = mIdET.getText()

                                                .toString().trim();

                                        String reasonStr = mReasonET.getText()

                                                .toString().trim();

                                        try {

                                            EMContactManager.getInstance()

                                                    .addContact(idStr,

                                                            reasonStr);

                                            mHandler.sendEmptyMessage(CODE_ADD_FRIEND);

                                        } catch (EaseMobException e) {

                                            // TODO Auto-generated catch block

                                            e.printStackTrace();

                                            Log.i("TAG", "addContacterrcode==>"

                                                    + e.getErrorCode());

                                        }// 需异步处理

                                    }

                                })

                        .setNegativeButton("取消",

                                new DialogInterface.OnClickListener() {

                                    public void onClick(DialogInterface dialog,

                                            int whichButton) {

                                        dialog.dismiss();

                                    }

                                }).create().show();


            }

        });

        logoutBtn.setOnClickListener(new OnClickListener() {


            @Override

            public void onClick(View arg0) {

                // TODO Auto-generated method stub


                showLogoutDialog();


            }

        });


        mListView.setOnItemClickListener(new OnItemClickListener() {


            @Override

            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,

                    long arg3) {

                // TODO Auto-generated method stub

                startActivity(new Intent(MainActivity.this,

                        ChatListActivity.class).putExtra("userid",

                        userList.get(arg2)));

            }

        });


        mListView.setOnItemLongClickListener(new OnItemLongClickListener() {


            @Override

            public boolean onItemLongClick(AdapterView<?> arg0, View arg1,

                    int arg2, long arg3) {

                // TODO Auto-generated method stub

                showDeleteDialog(userList.get(arg2));

                return true;

            }

        });

    }


    private void initList() {

        try {

            userList.clear();

            userList = EMContactManager.getInstance().getContactUserNames();

            mAdapter = new FriendListAdapter(MainActivity.this, userList);

            mListView.setAdapter(mAdapter);

        } catch (EaseMobException e1) {

            // TODO Auto-generated catch block

            e1.printStackTrace();

            Log.i("TAG", "usernames errcode==>" + e1.getErrorCode());

            Log.i("TAG", "usernames errcode==>" + e1.getMessage());

        }// 需异步执行

    }


    private class MyContactListener implements EMContactListener {


        @Override

        public void onContactAgreed(String username) {

            // 好友请求被同意

            Log.i("TAG", "onContactAgreed==>" + username);

            // 提示有新消息

            EMNotifier.getInstance(getApplicationContext()).notifyOnNewMsg();

            Toast.makeText(getApplicationContext(), username + "同意了你的好友请求",

                    Toast.LENGTH_SHORT).show();

        }


        @Override

        public void onContactRefused(String username) {

            // 好友请求被拒绝

            Log.i("TAG", "onContactRefused==>" + username);

        }


        @Override

        public void onContactInvited(String username, String reason) {

            // 收到好友添加请求

            Log.i("TAG", username + "onContactInvited==>" + reason);

            showAgreedDialog(username, reason);

            EMNotifier.getInstance(getApplicationContext()).notifyOnNewMsg();

        }


        @Override

        public void onContactDeleted(List<String> usernameList) {

            // 好友被删除时回调此方法

            Log.i("TAG", "usernameListDeleted==>" + usernameList.size());

        }


        @Override

        public void onContactAdded(List<String> usernameList) {

            // 添加了新的好友时回调此方法

            for (String str : usernameList) {

                Log.i("TAG", "usernameListAdded==>" + str);

            }

        }

    }


    @Override

    public boolean onKeyDown(int keyCode, KeyEvent event) {

        if (keyCode == KeyEvent.KEYCODE_BACK) {


            showExitDialog();

        }


        return super.onKeyDown(keyCode, event);

    }


    private void showLogoutDialog() {

        new AlertDialog.Builder(MainActivity.this)

                .setTitle("应用提示")

                .setMessage(

                        "确定要注销" + EMChatManager.getInstance().getCurrentUser()

                                + "用户吗？")

                .setPositiveButton("确定", new DialogInterface.OnClickListener() {

                    @Override

                    public void onClick(DialogInterface dialog, int which) {

                        // EMChatManager.getInstance().logout();

                        logout(new EMCallBack() {


                            @Override

                            public void onSuccess() {

                                // TODO Auto-generated method stub

                                startActivity(new Intent(MainActivity.this,

                                        ChatLoginActivity.class));

                            }


                            @Override

                            public void onProgress(int arg0, String arg1) {

                                // TODO Auto-generated method stub


                            }


                            @Override

                            public void onError(int arg0, String arg1) {

                                // TODO Auto-generated method stub


                            }

                        });


                    }

                })

                .setNegativeButton("取消", new DialogInterface.OnClickListener() {

                    public void onClick(DialogInterface dialog, int whichButton) {

                    }

                }).show();

    }


    public void logout(final EMCallBack callback) {

        // setPassword(null);

        EMChatManager.getInstance().logout(new EMCallBack() {


            @Override

            public void onSuccess() {

                // TODO Auto-generated method stub

                if (callback != null) {

                    callback.onSuccess();

                }

            }


            @Override

            public void onError(int code, String message) {

                // TODO Auto-generated method stub


            }


            @Override

            public void onProgress(int progress, String status) {

                // TODO Auto-generated method stub

                if (callback != null) {

                    callback.onProgress(progress, status);

                }

            }


        });

    }


    private void showAgreedDialog(final String user, String reason) {

        new AlertDialog.Builder(MainActivity.this)

                .setTitle("应用提示")

                .setMessage(

                        "用户 " + user + " 想要添加您为好友，是否同意？\n" + "验证信息：" + reason)

                .setPositiveButton("同意", new DialogInterface.OnClickListener() {

                    @Override

                    public void onClick(DialogInterface dialog, int which) {

                        try {

                            EMChatManager.getInstance().acceptInvitation(user);

                            initList();

                        } catch (EaseMobException e) {

                            // TODO Auto-generated catch block

                            e.printStackTrace();

                            Log.i("TAG",

                                    "showAgreedDialog1==>" + e.getErrorCode());

                        }

                    }

                })

                .setNegativeButton("拒绝", new DialogInterface.OnClickListener() {

                    public void onClick(DialogInterface dialog, int whichButton) {

                        try {

                            EMChatManager.getInstance().refuseInvitation(user);

                        } catch (EaseMobException e) {

                            // TODO Auto-generated catch block

                            e.printStackTrace();

                            Log.i("TAG",

                                    "showAgreedDialog2==>" + e.getErrorCode());

                        }

                    }

                })

                .setNeutralButton("忽略", new DialogInterface.OnClickListener() {

                    public void onClick(DialogInterface dialog, int whichButton) {

                        dialog.dismiss();

                    }

                }).show();

    }


    private void showDeleteDialog(final String user) {

        new AlertDialog.Builder(MainActivity.this)

                .setTitle("应用提示")

                .setMessage("确定删除好友  " + user + " 吗？\n")

                .setPositiveButton("确定", new DialogInterface.OnClickListener() {

                    @Override

                    public void onClick(DialogInterface dialog, int which) {

                        try {

                            EMContactManager.getInstance().deleteContact(user);

                            initList();

                        } catch (EaseMobException e) {

                            // TODO Auto-generated catch block

                            e.printStackTrace();

                            Log.i("TAG",

                                    "showAgreedDialog1==>" + e.getErrorCode());

                        }

                    }

                })

                .setNegativeButton("取消", new DialogInterface.OnClickListener() {

                    public void onClick(DialogInterface dialog, int whichButton) {

                        dialog.dismiss();

                    }

                }).show();

    }


    private void showExitDialog() {

        new AlertDialog.Builder(MainActivity.this)

                .setTitle("应用提示")

                .setMessage(

                        "确定要退出" + getResources().getString(R.string.app_name)

                                + "客户端吗？")

                .setPositiveButton("确定", new DialogInterface.OnClickListener() {

                    @Override

                    public void onClick(DialogInterface dialog, int which) {

                        AppManager.getInstance().AppExit(MainActivity.this);

                        MainActivity.this.finish();

                    }

                })

                .setNegativeButton("取消", new DialogInterface.OnClickListener() {

                    public void onClick(DialogInterface dialog, int whichButton) {

                    }

                }).show();

    }


}

public class IdentifyCode {


    private static final char CHARS = { '2', '3', '4', '5', '6', '7', '8',

            '9', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'j', 'k', 'l', 'm',

            'n', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'A',

            'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N',

            'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z' };


    private static IdentifyCode bmpCode;


    public static IdentifyCode getInstance() {

        if (bmpCode == null)

            bmpCode = new IdentifyCode();

        return bmpCode;

    }


    // default settings

    private static final int DEFAULT_CODE_LENGTH = 3;

    private static final int DEFAULT_FONT_SIZE = 25;

    private static final int DEFAULT_LINE_NUMBER = 2;

    private static final int BASE_PADDING_LEFT = 5, RANGE_PADDING_LEFT = 15,

            BASE_PADDING_TOP = 15, RANGE_PADDING_TOP = 20;

    private static final int DEFAULT_WIDTH = 60, DEFAULT_HEIGHT = 40;


    // settings decided by the layout xml

    // canvas width and height

    private int width = DEFAULT_WIDTH, height = DEFAULT_HEIGHT;


    // random word space and pading_top

    private int base_padding_left = BASE_PADDING_LEFT,

            range_padding_left = RANGE_PADDING_LEFT,

            base_padding_top = BASE_PADDING_TOP,

            range_padding_top = RANGE_PADDING_TOP;


    // number of chars, lines; font size

    private int codeLength = DEFAULT_CODE_LENGTH,

            line_number = DEFAULT_LINE_NUMBER, font_size = DEFAULT_FONT_SIZE;


    // variables

    private String code;

    private int padding_left, padding_top;

    private Random random = new Random();


    // 验证码图�?

    public Bitmap createBitmap() {

        padding_left = 0;


        Bitmap bp = Bitmap.createBitmap(width, height, Config.ARGB_8888);

        Canvas c = new Canvas(bp);


        code = createCode();


        c.drawColor(Color.WHITE);

        Paint paint = new Paint();

        paint.setTextSize(font_size);


        for (int i = 0; i < code.length(); i++) {

            randomTextStyle(paint);

            randomPadding();

            c.drawText(code.charAt(i) + "", padding_left, padding_top, paint);

        }


        for (int i = 0; i < line_number; i++) {

            drawLine(c, paint);

        }


        c.save(Canvas.ALL_SAVE_FLAG);// 保存

        c.restore();//

        return bp;

    }


    public String getCode() {

        return code;

    }


    // 验证�?

    private String createCode() {

        StringBuilder buffer = new StringBuilder();

        for (int i = 0; i < codeLength; i++) {

            buffer.append(CHARS[random.nextInt(CHARS.length)]);

        }

        return buffer.toString();

    }


    private void drawLine(Canvas canvas, Paint paint) {

        int color = randomColor();

        int startX = random.nextInt(width);

        int startY = random.nextInt(height);

        int stopX = random.nextInt(width);

        int stopY = random.nextInt(height);

        paint.setStrokeWidth(1);

        paint.setColor(color);

        canvas.drawLine(startX, startY, stopX, stopY, paint);

    }


    private int randomColor() {

        return randomColor(1);

    }


    private int randomColor(int rate) {

        int red = random.nextInt(256) / rate;

        int green = random.nextInt(256) / rate;

        int blue = random.nextInt(256) / rate;

        return Color.rgb(red, green, blue);

    }


    private void randomTextStyle(Paint paint) {

        int color = randomColor();

        paint.setColor(color);

        paint.setFakeBoldText(random.nextBoolean()); // true为粗体，false为非粗体

        float skewX = random.nextInt(11) / 10;

        skewX = random.nextBoolean() ? skewX : -skewX;

        paint.setTextSkewX(skewX); // float类型参数，负数表示右斜，整数左斜

        // paint.setUnderlineText(true); //true为下划线，false为非下划线?

        // paint.setStrikeThruText(true); //true为删除线，false为非删除线?

    }


    private void randomPadding() {

        padding_left += base_padding_left + random.nextInt(range_padding_left);

        padding_top = base_padding_top + random.nextInt(range_padding_top);

    }

}

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >


    <TextView

        android:id="@+id/chat_login_title"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:background="#131313"

        android:gravity="center"

        android:paddingBottom="10dp"

        android:paddingTop="10dp"

        android:text="登录"

        android:textColor="#fff" />


    <LinearLayout

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        android:layout_weight="1"

        android:background="#CAFFFF"

        android:orientation="vertical"

        android:paddingBottom="30dp"

        android:paddingLeft="30dp"

        android:paddingRight="30dp"

        android:paddingTop="60dp" >


        <LinearLayout

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:background="#131313"

            android:orientation="vertical" >


            <EditText

                android:id="@+id/chat_login_username"

                android:layout_width="match_parent"

                android:layout_height="wrap_content"

                android:layout_margin="5dp"

                android:background="#00000000"

                android:drawableLeft="@drawable/login_user"

                android:drawablePadding="5dp"

                android:ems="10"

                android:hint="用户名"

                android:inputType="textPersonName"

                android:textColor="#fff"

                android:textSize="12sp" />


            <View

                android:id="@+id/textView2"

                android:layout_width="match_parent"

                android:layout_height="1dp"

                android:background="#000000" />


            <LinearLayout

                android:layout_width="match_parent"

                android:layout_height="wrap_content"

                android:orientation="horizontal" >


                <EditText

                    android:id="@+id/chat_login_password"

                    android:layout_width="wrap_content"

                    android:layout_height="wrap_content"

                    android:layout_margin="5dp"

                    android:layout_weight="1"

                    android:background="#00000000"

                    android:drawableLeft="@drawable/login_password"

                    android:drawablePadding="5dp"

                    android:ems="10"

                    android:hint="密码"

                    android:inputType="textPassword"

                    android:textColor="#fff"

                    android:textSize="12sp" />


                <CheckBox

                    android:id="@+id/chat_login_password_checkbox"

                    android:layout_width="wrap_content"

                    android:layout_height="wrap_content"

                    android:layout_gravity="center_vertical"

                    android:layout_marginRight="5dp"

                    android:button="@drawable/password_checkbox" />

            </LinearLayout>

        </LinearLayout>


        <Button

            android:id="@+id/chat_login_signin_btn"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:layout_marginTop="20dp"

            android:background="#359D90"

            android:paddingBottom="10dp"

            android:paddingTop="10dp"

            android:text="登录"

            android:textColor="#fff" />


        <RelativeLayout

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:layout_marginTop="10dp"

            android:orientation="horizontal" >


            <TextView

                android:id="@+id/chat_login_signup0"

                android:layout_width="wrap_content"

                android:layout_height="wrap_content"

                android:text=""

                android:textColor="#5D5D5D"

                android:textSize="12sp" />


            <TextView

                android:id="@+id/chat_login_signup"

                android:layout_width="wrap_content"

                android:layout_height="wrap_content"

                android:layout_toRightOf="@id/chat_login_signup0"

                android:text="注册用户"

                android:textColor="#6F6F6F"

                android:textSize="12sp"

                android:textStyle="bold" />


            <TextView

                android:id="@+id/chat_login_forget_password"

                android:layout_width="wrap_content"

                android:layout_height="wrap_content"

                android:layout_alignParentRight="true"

                android:text="忘记密码"

                android:textColor="#5D5D5D"

                android:textSize="12sp" />

        </RelativeLayout>

    </LinearLayout>


</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >


    <RelativeLayout

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:background="#359D90"

        android:orientation="horizontal"

        android:paddingBottom="5dp"

        android:paddingTop="5dp" >


        <TextView

            android:id="@+id/current_user"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_centerInParent="true"

            android:text="我的好友"

            android:textColor="#fff" />


        <Button

            android:id="@+id/chat_logout_btn"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_alignParentRight="true"

            android:layout_marginRight="5dp"

            android:background="@drawable/chat_logout_icon" />

    </RelativeLayout>


    <TextView

        android:id="@+id/friend_list_go"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_margin="10dp"

        android:textStyle="bold|italic"

        android:textColor="#000fff"

        android:text="好友列表" />


    <View

        android:layout_width="match_parent"

        android:layout_height="1px"

        android:layout_marginTop="5dp"

        android:background="#DDDDDD" />


    <ListView

        android:id="@+id/chat_listview"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_weight="1"

        android:scrollbars="none" />


    <Button

        android:id="@+id/chat_add_btn"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_gravity="bottom"

        android:background="@drawable/send_btn_bg"

        android:paddingBottom="12dp"

        android:paddingLeft="10