BroadcastReceiver 中的来电和去电

Question

有一项服务，其中已处理的媒体播放器希望为来电和去电服务停止媒体播放器执行此操作，并在呼叫流程结束时恢复播放。 现在只能在呼入和呼出时停止播放，应该添加代码来播放 TelephonyManager.CALL_STATE_IDLE: 然后过一会儿音乐开始说话，如何解决？

public class CallReceiver extends BroadcastReceiver{
TelephonyManager telManager;
Context context;
boolean startedCall = false;

@Override
public void onReceive(Context context, Intent intent) {


this.context=context;


telManager = (TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE);
telManager.listen(phoneListener, PhoneStateListener.LISTEN_CALL_STATE);

}

private final PhoneStateListener phoneListener = new PhoneStateListener() {
@Override
public void onCallStateChanged(int state, String incomingNumber) {
    super.onCallStateChanged(state, incomingNumber);
    try {
        switch (state) {
        case TelephonyManager.CALL_STATE_RINGING: {
            if(incomingNumber!=null)
            {
                //incoming call
                MediaService.stopMP();
                startedCall  = true;
            }

        break;
        }
        case TelephonyManager.CALL_STATE_OFFHOOK: {
            if(incomingNumber!=null)
            {
                //outgoing call
                MediaService.stopMP();
                startedCall  = true;
            }

        break;
        }
        case TelephonyManager.CALL_STATE_IDLE: {
            if(startedCall)
            {
                MainActivity.titleMusic.setVisibility(View.VISIBLE);
                MainActivity.Play();
                MediaService.startMP();
                startedCall = false;
            }                   

        break;
        }
        default: { }
        }
        } catch (Exception ex) {

        }
    }
};
}

Answer 1

在响铃之前呼叫状态应该是TelephonyManager.CALL_STATE_IDLE，在来电之前呼叫状态应该是IDEL，所以你必须设置一个标志布尔值来识别状态；

    public class CallReceiver extends BroadcastReceiver{
    TelephonyManager telManager;
    Context context;

    @Override
    public void onReceive(Context context, Intent intent) {    
       this.context=context;    
       private boolean startedCall = false; // New added boolean    
       telManager = (TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE);
       telManager.listen(phoneListener, PhoneStateListener.LISTEN_CALL_STATE);    
    }

    private final PhoneStateListener phoneListener = new PhoneStateListener() {
    @Override
    public void onCallStateChanged(int state, String incomingNumber) {
    super.onCallStateChanged(state, incomingNumber);
    try {
        switch (state) {
            case TelephonyManager.CALL_STATE_RINGING: {
                if(incomingNumber!=null) {
                   //incoming call
                   MainActivity.stopMP()
                }    
                break;
            }
            case TelephonyManager.CALL_STATE_OFFHOOK: {    
                startedCall  = true; // Newly added code    
               if(incomingNumber!=null) {
                  //outgoing call
                   MainActivity.stopMP();
               }
               break;
            }
            case TelephonyManager.CALL_STATE_IDLE: {
               if(startedCall) {
                   MainActivity.titleMusic.setVisibility(View.VISIBLE);
                   MainActivity.Play();
                   MediaService.startMP();
               }          
               break;
            }
            default: { }
        }
      } catch (Exception ex) {

      }
    }
    };
}