Android和課間活動

Question

我的接收器不工作。問題在於課堂和活動之間。即時通訊從類發送消息到活動，但不工作... 該班將與兩個活動，一次一個通...

我的廣播代碼（活動內）：

public class MainActivity extends Activity{ 

BroadcastReceiver receiver; 
IntentFilter filter; 

private void init() { 
     try { 

      ... 

      receiver = new BroadcastReceiver() { 

       @Override 
       public void onReceive(Context context, Intent intent) { 
        String action = intent.getAction(); 

        if(action.equals("HAS_CONECT")){ 
         progressBar.setVisibility(View.GONE); 
         Toast.makeText(getApplicationContext(), "IS CONECTED!", Toast.LENGTH_LONG).show(); 
        } 
        else if(action.equals("ARRIVES")){ 
         Toast.makeText(getApplicationContext(), "HAS ARRIVE!!!", Toast.LENGTH_LONG).show(); 
        } 
       } 

      }; 

      filter = new IntentFilter("HAS_CONECT"); 
      registerReceiver(receiver, filter); 
      filter = new IntentFilter("ARRIVES"); 
      registerReceiver(receiver, filter); 
     } catch (Exception e) { 
      System.out.println(e); 
     } 
    } 

... 
} 

而且我的代碼類：

public void adviseActivity(){ 
    try { 
     Intent i = new Intent("MESSAGE"); 
     i.putExtra("msg", "DATA ARRIVE"); 
     i.setAction("ARRIVES"); 
     context.sendBroadcast(i); 

    } catch (Exception e) { 
     System.out.print(e); 
    } 
} 

Answer 1

的問題是在你的onReceive方法，你找錯了行動。您設置的操作是MESSAGE，但您正在查找的操作onReceive是HAS_CONECT和ARRIVES。 更正代碼如下：

  @Override 
      public void onReceive(Context context, Intent intent) { 
       String action = intent.getAction(); 

       if(action.equals("MESSAGE")){ 
        progressBar.setVisibility(View.GONE); 
        Toast.makeText(getApplicationContext(), "IS CONECTED!", Toast.LENGTH_LONG).show(); 
       } 
      }