Android AlarmManager不起作用

Question

I searched on the forum but it works for others. What is wrong in my AlarmManager? I want to call the CallDataSend class in every minute

public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    Intent alarmIntent = new Intent(this, CallDataSend.class);

    PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0,
            alarmIntent, PendingIntent.FLAG_ONE_SHOT);

    AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
    alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + (2 * 1000), pendingIntent);
    Toast.makeText(this, "Alarm set", Toast.LENGTH_LONG).show();
   }
}

the CallDataSend class:

public final class CallDataSend extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
    Toast.makeText(context, "Alarm worked.", Toast.LENGTH_LONG).show();

}
}

and xml file:

<receiver
        android:name="CallDataSend"
        android:enabled="false">
        <intent-filter>
            <action android:name="android.intent.action.MAIN"></action>
        </intent-filter>
     </receiver>

Answer 1

I believe you should make the receiver enabled before it can be instantiated by the system.

<receiver
        android:name="CallDataSend"
        android:enabled="true">
        <intent-filter>
            <action android:name="android.intent.action.MAIN"></action>
        </intent-filter>
     </receiver>

Answer 2

You also have to name your receiver with ".YourClass" instead of "YourClass" if that class is in the same package declared in your manifest's attributes or with "YourCompletePackage.YourClass" if it is not.

Ex: in your case,

<receiver
    android:name=".CallDataSend"
    android:enabled="true">
    <intent-filter>
        <action android:name="android.intent.action.MAIN"></action>
    </intent-filter>
 </receiver>

in another case,

<receiver
    android:name="com.example.CallDataSend"
    android:enabled="true">
    <intent-filter>
        <action android:name="android.intent.action.MAIN"></action>
    </intent-filter>
 </receiver>