Question

在我的应用程序中有一个BroadCastReceiver来处理来电。当有来电时，我会调用一些本机代码方法。我不希望在刷卡后杀死应用程序时调用此广播接收器。即使我杀了我的应用程序，接收器也会被调用。接收器的代码是 -

public class CallReceiver extends BroadcastReceiver{

    private final String TAG = this.getClass().getSimpleName();
    private Context context;

    public CallReceiver(){
    }

    @Override
    public void onReceive(Context context, Intent intent) {
        Log.e(TAG, "In onReceive of CallReceiver");
        this.context = context;

        try {
            // Telephony manager object to register for the listener
            TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);

            // Initialising the MyPhoneStateListener class
            MyPhoneStateListener PhoneListener = new MyPhoneStateListener();

            // Register listener for LISTEN_CALL_STATE
            telephonyManager.listen(PhoneListener, PhoneStateListener.LISTEN_CALL_STATE);

        } catch (Exception e) {
            Log.e("Phone Receive Error", " " + e);
        }
    }

    private class MyPhoneStateListener extends PhoneStateListener {

            @Override
            public void onCallStateChanged(int state, String incomingNumber) {
                switch (state){
                    case TelephonyManager.CALL_STATE_OFFHOOK:
                        // This state denotes that the mobile is busy in some call

                            GLLib.pause(true);

                        Log.e(TAG, "Phone busy");
                        break;

                    case TelephonyManager.CALL_STATE_RINGING:
                        // This state denotes that the phone is ringing

                            GLLib.pause(true);

                        Log.e(TAG, "Phone ringing");
                        break;

                    case TelephonyManager.CALL_STATE_IDLE:
                        // This state denoted that the phone is idle

                            GLLib.pause(false);

                        Log.e(TAG, "Phone idle");
                        break;
                }
                super.onCallStateChanged(state, incomingNumber);
            }
        }
}

在清单中我有 -

      <intent-filter>
          <action android:name="android.intent.action.PHONE_STATE"/>
      </intent-filter>
  </receiver>

许可是 -

Answer 1

广播接收器与您的应用程序的生命周期无关，Android会读取您的应用程序的清单，并将广播发送到期望特定操作的相应应用程序。如果您希望在App未处于活动状态时停止接收广播，则需要在活动/服务的onDestroy中取消注册广播

unregisterReceiver(BroadcastReceiver receiver)

Answer 2

解决问题的最简单方法是

 Register BroadCastReceiver in onResume, unregister in onPause

希望这对你有用。

即使应用程序被终止，BroadcastReceiver也会被调用

2 个答案: