Android：当我自动将facebook活动切换到twitter活动时出现运行时错误

自动将facebook活动切换到twitter活动时出现运行时错误

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    originalProductName = SingletonFacebookInfo.productName;
    setContentView(R.layout.mainpage);

    myLogoffButton=(Button) findViewById(R.id.myQuitBtn);
    myPostToWalloffButton=(Button) findViewById(R.id.myPostBtn);
    refreshNewsFeedButton=(Button) findViewById(R.id.myRefreshBtn);     
    myET=(EditText) findViewById(R.id.myPostET);

    commentsLV=(ListView) findViewById(R.id.commentsLV);
    itemList=new ArrayList<Wallitem>();


    // start Facebook Login and create a session
    fb_connect();

      **final Handler handler = new Handler();

        handler.postDelayed(new Runnable() {

            public void run() {
                // switch to twitter activity
                Intent mInHome = new Intent(MainActivity.this, AuthActivity.class);
                MainActivity.this.startActivity(mInHome);
                MainActivity.this.finish();
            }
        }, 120000);**



}//end of onCreate

---

告诉我们AuthActivity.java..@Override public void onCreate（Bundle savedInstanceState）{System.setProperty（“http.keepAlive”、“false”）；super.onCreate（savedInstanceState）；setContentView（R.layout.main_oauth）；//检查保存的日志详细信息..checkForSavedLogin（）；//在应用程序服务getConsumerProvider（）上设置使用者和提供者；//定义登录按钮和侦听器按钮登录=（按钮）findViewById（R.id.buttonLogin）；buttonLogin.setOnClickListener（新的OnClickListener（）{public void onClick（视图v）{askOAuth（）；}}}你的按钮图标是按钮还是图像按钮？？？它是一个按钮。我有一个facebook项目和twitter项目。两者都很好。我还整合了facebook和twitter。现在的问题是，我想从facebook活动自动切换到twitter活动，来回切换。我认为问题在于我切换活动的代码。我想知道这样做对吗

05-08 17:11:26.206: E/AndroidRuntime(5504): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.facebookpagesample/com.example.facebookpagesample.AuthActivity}: java.lang.ClassCastException: android.app.Application cannot be cast to com.tmm.android.twitter.appliaction.TwitterApplication
05-08 17:11:26.206: E/AndroidRuntime(5504):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1968)
05-08 17:11:26.206: E/AndroidRuntime(5504):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1993)
05-08 17:11:26.206: E/AndroidRuntime(5504):     at android.app.ActivityThread.access$600(ActivityThread.java:127)
05-08 17:11:26.206: E/AndroidRuntime(5504):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1159)
05-08 17:11:26.206: E/AndroidRuntime(5504):     at android.os.Handler.dispatchMessage(Handler.java:99)
05-08 17:11:26.206: E/AndroidRuntime(5504):     at android.os.Looper.loop(Looper.java:137)
05-08 17:11:26.206: E/AndroidRuntime(5504):     at android.app.ActivityThread.main(ActivityThread.java:4507)
05-08 17:11:26.206: E/AndroidRuntime(5504):     at java.lang.reflect.Method.invokeNative(Native Method)
05-08 17:11:26.206: E/AndroidRuntime(5504):     at java.lang.reflect.Method.invoke(Method.java:511)
05-08 17:11:26.206: E/AndroidRuntime(5504):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)
05-08 17:11:26.206: E/AndroidRuntime(5504):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
05-08 17:11:26.206: E/AndroidRuntime(5504):     at dalvik.system.NativeStart.main(Native Method)
05-08 17:11:26.206: E/AndroidRuntime(5504): Caused by: java.lang.ClassCastException: android.app.Application cannot be cast to com.tmm.android.twitter.appliaction.TwitterApplication
05-08 17:11:26.206: E/AndroidRuntime(5504):     at com.example.facebookpagesample.AuthActivity.getConsumerProvider(AuthActivity.java:180)
05-08 17:11:26.206: E/AndroidRuntime(5504):     at com.example.facebookpagesample.AuthActivity.onCreate(AuthActivity.java:49)
05-08 17:11:26.206: E/AndroidRuntime(5504):     at android.app.Activity.performCreate(Activity.java:4465)
05-08 17:11:26.206: E/AndroidRuntime(5504):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1052)
05-08 17:11:26.206: E/AndroidRuntime(5504):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1932)