无法实例化接收器com.google.android.gcm.demo.app.GcmBroadcastReceiver：

Question

我从https://code.google.com/p/gcm/

导入了该项目

它的构建，当我运行项目时，有时我的应用程序崩溃并给我一个错误，如

     12-03 19:26:20.416: E/AndroidRuntime(17274): java.lang.RuntimeException: Unable to instantiate receiver com.google.android.gcm.demo.app.GcmBroadcastReceiver: java.lang.ClassNotFoundException: com.google.android.gcm.demo.app.GcmBroadcastReceiver
     12-03 19:26:20.416: E/AndroidRuntime(17274):   at android.app.ActivityThread.handleReceiver(ActivityThread.java:2222)
     12-03 19:26:20.416: E/AndroidRuntime(17274):   at android.app.ActivityThread.access$1500(ActivityThread.java:138)
     12-03 19:26:20.416: E/AndroidRuntime(17274):   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1283)
     12-03 19:26:20.416: E/AndroidRuntime(17274):   at android.os.Handler.dispatchMessage(Handler.java:99)
     12-03 19:26:20.416: E/AndroidRuntime(17274):   at android.os.Looper.loop(Looper.java:213)
     12-03 19:26:20.416: E/AndroidRuntime(17274):   at android.app.ActivityThread.main(ActivityThread.java:4787)
     12-03 19:26:20.416: E/AndroidRuntime(17274):   at java.lang.reflect.Method.invokeNative(Native Method)
     12-03 19:26:20.416: E/AndroidRuntime(17274):   at java.lang.reflect.Method.invoke(Method.java:511)

     12-03 19:26:20.416: E/AndroidRuntime(17274):   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
     12-03 19:26:20.416: E/AndroidRuntime(17274):   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
     12-03 19:26:20.416: E/AndroidRuntime(17274):   at dalvik.system.NativeStart.main(Native Method)
     12-03 19:26:20.416: E/AndroidRuntime(17274): Caused by: java.lang.ClassNotFoundException: com.google.android.gcm.demo.app.GcmBroadcastReceiver
     12-03 19:26:20.416: E/AndroidRuntime(17274):   at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
     12-03 19:26:20.416: E/AndroidRuntime(17274):   at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
     12-03 19:26:20.416: E/AndroidRuntime(17274):   at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
     12-03 19:26:20.416: E/AndroidRuntime(17274):   at android.app.ActivityThread.handleReceiver(ActivityThread.java:2217)
     12-03 19:26:20.416: E/AndroidRuntime(17274):   ... 10 more
     12-03 19:26:22.496: I/Process(17274): Sending signal. PID: 17274 SIG: 9

但GcmBroadcastReceiver在我的包中

并且在清单声明中也正确

Click事件的源代码是

      public void onClick(final View view) {

    if (view == findViewById(R.id.send)) {
        new AsyncTask<Void, Void, String>() {
            @Override
            protected String doInBackground(Void... params) {
                String msg = "";
                try {
                    Bundle data = new Bundle();
                    data.putString("my_message", "Hello World");
                    data.putString("my_action", "com.google.android.gcm.demo.app.ECHO_NOW");
                    String id = Integer.toString(msgId.incrementAndGet());
                    System.out.println("GCM Adhyakhs = "+SENDER_ID + "@gcm.googleapis.com");
                    gcm.send(SENDER_ID + "@gcm.googleapis.com", id, data);
                    msg = "Sent message";
                } catch (IOException ex) {
                    msg = "Error :" + ex.getMessage();
                }
                return msg;
            }

            @Override
            protected void onPostExecute(String msg) {
                mDisplay.append(msg + "\n");
            }
        }.execute(null, null, null);