Question

这是我的BroadcastReceiver

    public class PlayAudio extends BroadcastReceiver {

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

        TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
        tm.listen(new CustomPhoneStateListener(context), PhoneStateListener.LISTEN_CALL_STATE);
    }
}

这是我的Custom PhoneStateListener Class

public class CustomPhoneStateListener extends PhoneStateListener {

    Context context; 

    public CustomPhoneStateListener(Context context) {
        super();
        this.context = context;
    }

    @Override
    public void onCallStateChanged(int state, String incomingNumber) {
        super.onCallStateChanged(state, incomingNumber);

        switch (state) {
        case TelephonyManager.CALL_STATE_IDLE:
            Log.d("PHONEA", "IDLE");
            break;
        case TelephonyManager.CALL_STATE_OFFHOOK:
           Log.d("PHONEA", "OFFHOOK");
            break;
        case TelephonyManager.CALL_STATE_RINGING:
            Log.d("PHONEA", "RINGING");
            Intent intent = new Intent(this.context, AudioService.class);
            context.startService(intent);
            break;
        default:
            break;
        }
    }
}

这是我的服务

public class AudioService extends Service{
    private static final String TAG = "PHONEA";
    MediaPlayer player;

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onCreate() {
        Log.d(TAG, "onCreate -> TODO");
        }
}

我的问题是每次我在广播接收器中接收数据时，我都会创建一个TelephonyManager的新实例。所以当我第一次看到logcat时，我得到“RINGING”，第二次“RINGING”“RINGING”等等。我应该创建我的telephonylistener，以便只有一个实例？

此致尼科斯

Answer 1

每次手机状态发生变化时，您都会接听电话（假设您正在收听PhoneState）。

您应该在接收器中进行一些检查，并且仅在第一次启动TelephonyManager。

Broadcastreceiver创建TelephonyManager的多个实例

1 个答案: