带有活动的广播接收器服务反馈不起作用

Question

我为带有活动的服务反馈创建了一个广播接收器。但这不起作用。调试器 -- 从服务调用 sendBroadcast 后，跳过此 (LocalBroadcastManager.getInstance(this).sendBroadcast(RTReturn);) 行并且不会导致 Activity

This is Activity
package com.example.my;

 BroadcastReceiver br;
public static final String RECEIVE_JSON = 
"com.example.my.RECEIVE_JSON";
 public class cama extends AppCompatActivity
@Override
protected void onCreate(Bundle savedInstanceState) {
    xcxc();
    xcx();
            }

    public void xcxc()
    {
     br = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        if(intent.getAction().equals(RECEIVE_JSON)) {
        String serviceJsonString = intent.getStringExtra("json");
                Toast toast = Toast.makeText(getApplicationContext(),
                        "Test!", Toast.LENGTH_SHORT);
                toast.show();
        }
         }
        };
   }
public void xcx()
{
    LocalBroadcastManager bManager;
    bManager = LocalBroadcastManager.getInstance(this);
    IntentFilter intentFilter = new IntentFilter();
    intentFilter.addAction(RECEIVE_JSON);
    bManager.registerReceiver(br, intentFilter);
}

      @Override
public void onDestroy() {
    super.onDestroy();
    if (br != null) {
    unregisterReceiver(br);
    }
       }

这是服务

package com.example.my;
public class MyService extends Service
      @Override
     public void onCreate() {
       do_anything();
         }
     public void do_anything()
     {Intent RTReturn = new Intent(cama.RECEIVE_JSON);
     RTReturn.putExtra("json", "ole");
     LocalBroadcastManager.getInstance(this).sendBroadcast(RTReturn);}

Answer 1

只在onCreate(Bundle savedInstanceState)内部使用：

LocalBroadcastManage 
mlocal = LocalBroadcastManager.getInstance(getApplicationContext());

mlocal.sendBroadcast(YOUR Reciever)