java - 从BroadcastReceiver调用MainApplication方法

我有一个带有活动，服务和广播接收器的Android应用程序。从服务中，我调用了一个有效的广播意图。广播接收器正确接收到该意图。

但是，如何从类MainApplication中访问类MyBroadcastReceiver的方法？

((MainApplication)getApplication()).myMethod();给出错误消息“无法解决方法”

//Call from the service-class
private void sendBroadcast() {
    Log.d(TAG, "Sending Broadcast Intent");
    Intent intent = new Intent();
    intent.setAction("com.package.name.MyBroadcastReceiver");
    intent.addFlags(Intent.FLAG_INCLUDE_STOPPED_PACKAGES);
    sendBroadcast(intent);
}


//receiver class
public class MyBroadcastReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        //Doesn't work - "cannot resolve method"
        ((MainApplication)getApplication()).myMethod();
        //Doesn't work either
        ((MainApplication)context.getApplication()).myMethod();
        Toast.makeText(context, "Intent Detected.", Toast.LENGTH_LONG).show();
    }
}



//Main Application Class
public class MainApplication extends Application{

    public void myMethod(){

    }

}

最好的祝福

最佳答案

将上下文转换为活动：

//receiver class
public class MyBroadcastReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        Activity activity = (Activity) context;
        ((MainApplication)activity.getApplication()).myMethod();
        Toast.makeText(context, "Intent Detected.", Toast.LENGTH_LONG).show();
    }
}