Android移植整个Demo到项目里面,用到环信的getInstance()方法都会报NullPointerException?
单独用的时候没有问题,一移植到项目里就出现问题了,请教一下为什么?
出现问题的代码,比如:
EaseBaseActivity里的EaseUI.getInstance().getNotifier().reset();
LoginActivity里的DemoDBManager.getInstance().closeDB();和
DemoHelper.getInstance().setCurrentUserName(currentUsername)等
错误日志,比如:
java.lang.IllegalStateException: Could not execute method of the activity
at android.view.View$1.onClick(View.java:3823)
at android.view.View.performClick(View.java:4438)
at android.view.View$PerformClick.run(View.java:18422)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5045)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at android.view.View$1.onClick(View.java:3818)
at android.view.View.performClick(View.java:4438)
at android.view.View$PerformClick.run(View.java:18422)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5045)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.hyphenate.chatuidemo.DemoHelper.setCurrentUserName(DemoHelper.java:953)
at com.hyphenate.chatuidemo.ui.LoginActivity.login(LoginActivity.java:150)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at android.view.View$1.onClick(View.java:3818)
at android.view.View.performClick(View.java:4438)
at android.view.View$PerformClick.run(View.java:18422)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5045)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
出现问题的代码,比如:
EaseBaseActivity里的EaseUI.getInstance().getNotifier().reset();
LoginActivity里的DemoDBManager.getInstance().closeDB();和
DemoHelper.getInstance().setCurrentUserName(currentUsername)等
错误日志,比如:
java.lang.IllegalStateException: Could not execute method of the activity
at android.view.View$1.onClick(View.java:3823)
at android.view.View.performClick(View.java:4438)
at android.view.View$PerformClick.run(View.java:18422)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5045)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at android.view.View$1.onClick(View.java:3818)
at android.view.View.performClick(View.java:4438)
at android.view.View$PerformClick.run(View.java:18422)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5045)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.hyphenate.chatuidemo.DemoHelper.setCurrentUserName(DemoHelper.java:953)
at com.hyphenate.chatuidemo.ui.LoginActivity.login(LoginActivity.java:150)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at android.view.View$1.onClick(View.java:3818)
at android.view.View.performClick(View.java:4438)
at android.view.View$PerformClick.run(View.java:18422)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5045)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
没有找到相关结果
已邀请:
2 个回复
SunstormChen - 90后IT男
//初始化环信
EMOptions options = new EMOptions();
// 默认添加好友时,是不需要验证的,改成需要验证
options.setAcceptInvitationAlways(false);
//初始化
EMClient.getInstance().init(this, options);
//在做打包混淆时,关闭debug模式,避免消耗不必要的资源
EMClient.getInstance().setDebugMode(true);
难道还需要初始化其他类吗?
SunstormChen - 90后IT男
// 初始化环信SDK
applicationContext = this;
instance = this;
//init demo helper
DemoHelper.getInstance().init(applicationContext);
将这段代码移植到自己的Application里面就好了,还要注意一点,官方里面的UI的布局需要在自己项目的清单文件里注册,然后移植到自己的项目中。
编译的过程还出现了parse的jar包需要用到了okhttp的jar包,里面有的方法对不上,不过暂时还不影响使用,要对应的上的话,把parse的jar包换成1.13.1版本,okhttp的jar包换成3.4.1的,再加上okio的1.9.0的jar包。
如果编译出现java.util.zip.ZipException: duplicate entry的错误,说明jar包有文件冲突了,通常是因为类重名,没有影响的话可以删除该类,但是建议的做法是在项目的Structure的Dependence中,点击右边的Scope,将该jar包的依赖方式由Compile变成Provided,表示该jar包不全局共享,这样外部编译的时候就不会找它了。