Android - 停止 PhoneStateListener/BR/UnregisterReceiver

Question

我在停止 PhoneStateListener 时遇到问题。我尝试使用 unregisterReceiver() 但它没有用。我确实阅读了该网站，发现我必须使用 LISTEN.NON，但我做不到。

我的问题如下:
1 - 我必须把我的“telephony.listen(listener, PhoneStateListener.LISTEN_NONE);”放在哪里在我的代码中？
2 - 我必须使用 unregisterReceiver 吗？

我的代码不容易解释，而且很长，所以我不会给出所有代码，只给出主视图。

事实上:我从计时器启动了一个服务。此服务注册一个 BR

/* 第一个 */

public class TmrSettingsCheck extends BroadcastReceiver
 {
  public void setTimer(long milli)
   { // setRepeating } 

  public void onReceive(Context context, Intent intent)         
   {
    // Try to know if we have to start or stop the service
    context.startService(new Intent(context, SvcCall.class));  
    OR
    context.stopService(new Intent(context, SvcCall.class));
   }
 }

/* 第二个 */

public class SvcCall extends Service
 {
  private BroadcastReceiver br_call;

  public void onCreate()
   { // Creation }

  public int onStartCommand(Intent intent, int flags, int startId)
   {  
    // register the broadcast receiver
    IntentFilter filter = new IntentFilter();
    filter.addAction(ACTION_OUT);
    filter.addAction(ACTION_IN);
    this.br_call = new CallBR(this._context);
    this.registerReceiver(this.br_call, filter);
    return (START_STICKY);
   }

  public class CallBR extends ClsCallReceiver
   {
    public CallBR(Context context)  
     { // constructor }

    protected void onIncomingCallStarted(String number, Date start) 
     { // XYZ
     }

    protected void onIncomingCallEnded(String number, Date start, Date end) 
     { // XYZ }

    protected void onOutgoingCallStarted(String number, Date start) 
     { // XYZ }

    protected void onOutgoingCallEnded(String number, Date start, Date end) 
     { // XYZ }

    protected void onMissedCall(String number, Date start) 
     { // XYZ }
   }

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

  public void onDestroy()
  {
   this.unregisterReceiver(this.br_call);          
   super.onDestroy();
   } 
 }

/* 第三个 */

public abstract class ClsCallReceiver extends BroadcastReceiver 
 {
  public static PhonecallStartEndDetector listener;
  String outgoingSavedNumber;
  protected Context savedContext;
  TelephonyManager telephony;

  public void onReceive(Context context, Intent intent) 
   {
    savedContext = context;
    if (listener == null)
     listener = new PhonecallStartEndDetector();

    if (intent.getAction().equals("android.intent.action.NEW_OUTGOING_CALL")) 
     {
      listener.setOutgoingNumber(intent.getExtras().getString("android.intent.extra.PHONE_NUMBER"));
      return;
     }
    this.telephony = (TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE); 
    this.telephony.listen(listener, PhoneStateListener.LISTEN_CALL_STATE);
   }

  public class PhonecallStartEndDetector extends PhoneStateListener 
   {
    public PhonecallStartEndDetector() 
     { // XYZ }

    public void onCallStateChanged(int state, String incomingNumber) 
     { // XYZ }    
   }

  protected abstract void onIncomingCallStarted(String number, Date start);
  protected abstract void onOutgoingCallStarted(String number, Date start);
  protected abstract void onIncomingCallEnded(String number, Date start, Date end); 
  protected abstract void onOutgoingCallEnded(String number, Date start, Date end);
  protected abstract void onMissedCall(String number, Date start);   
 }

Answer 1

使用 LISTEN_NONE 作为 listen 方法的参数来停止监听更新。这将使听众听不到任何声音。

telephonymanager.listen(phoneStateListener, PhoneStateListener.LISTEN_NONE );