这不起作用,我从未在接收器中收到消息。我已经工作了几个小时。我正在尝试做的是使用LocalBroadcastManager而不使用另一个AppContext类的Activity。
第1课
import android.content.Context;
public class AppContext extends Application {
private static AppContext instance;
public AppContext() {
instance = this;
}
public static Context getContext() {
return instance;
}
}
第2课
@Override
public void onResume() {
receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
//receive your message here
String message = intent.getStringExtra("message");
Log.d("receiver", "Got message: " + message);
Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();
}
};
LocalBroadcastManager.getInstance(AppContext.getContext()).registerReceiver(receiver,
new IntentFilter("custom-event-name"));
CLASS3
Log.d("sender", "Broadcasting message");
Intent intent = new Intent("custom-event-name");
// You can also include some extra data.
intent.putExtra("message", "99999");
LocalBroadcastManager.getInstance(AppContext.getContext()).sendBroadcast(intent);
答案 0 :(得分:1)
我也有同样的问题。 不要改变第3课中的任何内容。我觉得它很完美。 在class2中,创建一个扩展BroadcastReceiver的内部类。
private class Class2Receiver extends BroadcastReceiver
{
@Override
public void onReceive(Context context, Intent intent)
{
Class2.this.class2Refresh();
}
}
// class2Refresh():在此方法中接收您的消息
在class2中,onResume()方法,实例化如下:
Class2 class2Rec=new Class2.Class2Receiver();
LocalBroadcastManager.getInstance(getContext()).registerReceiver(class2Rec,new IntentFilter("custom-event-name"));
class2Refresh();
请告诉我这是否有帮助!