问动态注册和注销活动中的广播接收器，同时还允许其在活动外部运行

EN

public class WakeActivity extends Activity {

IntentFilter screenon = new IntentFilter("android.intent.action.SCREEN_ON");

//Skipped a bunch of code here to keep it relevant. Remember, the broadcast receiver
//does in fact work while I'm in the activity, so the problem isn't with
//the missing code here. Still, let me know if I'm missing something.

//The following method is called within onCreate()

protected void airplane(int i) {
    Screen_On screenon_airplane = new Screen_On();
    if (i == 0) {
        screenon_airplane.airplanei = 0;
        registerReceiver(screenon_airplane, screenon);
    } else if (i == 1) {
        screenon_airplane.airplanei = 1;
        registerReceiver(screenon_airplane, screenon);
    } else if (i == -1) {
        unregisterReceiver(screenon_airplane);
    }
}
}

public class Screen_On extends BroadcastReceiver {

public int airplanei;

@Override
public void onReceive(final Context context, Intent intent) {
    boolean isEnabled = Settings.System.getInt(
            context.getContentResolver(), Settings.System.AIRPLANE_MODE_ON,
            0) == 1;
    if (airplanei == 0) {
        if (isEnabled != false) {
            Settings.System.putInt(context.getContentResolver(),
                    Settings.System.AIRPLANE_MODE_ON, 0);
            Intent turnplaneoff = new Intent(
                    Intent.ACTION_AIRPLANE_MODE_CHANGED);
            turnplaneoff.putExtra("state", 0);
            context.sendBroadcast(turnplaneoff);
        }
    } else if (airplanei == 1) {
        if (isEnabled == false) {
            Settings.System.putInt(context.getContentResolver(),
                    Settings.System.AIRPLANE_MODE_ON, 1);
            Intent turnplaneon = new Intent(
                    Intent.ACTION_AIRPLANE_MODE_CHANGED);
            turnplaneon.putExtra("state", 1);
            context.sendBroadcast(turnplaneon);
        }
    }
}
}

05-17 23:44:24.886: E/ActivityThread(2435): Activity com.dragonheart.autodroid.ActionActivities.WakeActivity has leaked IntentReceiver com.dragonheart.autodroid.BroadCastRecievers.Screen_On@414271b0 that was originally registered here. Are you missing a call to unregisterReceiver()?