TelephonyManager.CALL_STATE_RINGING调用的两倍，而一个呼叫振铃 [英] TelephonyManager.CALL_STATE_RINGING calls twice while one call ringing

问题描述

我用的后代 - 类PhoneStateListener的：

I use descendant - class of PhoneStateListener:

 class CallStateListener extends PhoneStateListener {
@Override
public void onCallStateChanged(int state, String incomingNumber) {
      switch (state) {
          case TelephonyManager.CALL_STATE_RINGING:
              if (incomingNumber!=null)
              {
                // code for incoming call handling
              }


          break;           

      }
      super.onCallStateChanged(state, incomingNumber);
  }

这是我的广播接收器：

class ServiceReceiver extends BroadcastReceiver {
     CallStateListener phoneListener;
    @Override
    public void onReceive(final Context context, Intent intent) {

        if (phoneListener == null) {
            phoneListener = CallStateListener.getCallStateInstance(context);


            TelephonyManagerSingletone.getInstance().getTelephonyManager().listen(CallStateListener.getCallStateInstance(context),
                    android.telephony.PhoneStateListener.LISTEN_CALL_STATE);


        }   
}

清单：

  <receiver android:name="com.library.ServiceReceiver" >
        <intent-filter>
            <action android:name="android.intent.action.PHONE_STATE" />
            <action android:name="android.intent.action.NEW_OUTGOING_CALL"/>
        </intent-filter>
    </receiver>

但是当我用它这个样子，我收到我的CallStateListener重复呼叫。我该如何解决这个问题？

but when I use it like this, I receive duplicate call in my CallStateListener. How can I fix this?

推荐答案

当我想你的code，它运行10次，而不是只有一次运行！这是更好地申报 phoneListener 在这种情况下，一个静态变量。这样，你可以保证听方法将不会被调用一次以上。检查了这一点：

When I tried your code, it run 10 times instead of running just once! It is better to declare phoneListener as a static variable in this case. That way you can guarantee that listen method will not be called more than once. Check this out:

public class ServiceReceiver extends BroadcastReceiver {
    static CallStateListener phoneListener;

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

        if (phoneListener == null) {
            phoneListener = new CallStateListener();
            TelephonyManager tm = (TelephonyManager)context.getSystemService("phone");
            tm.listen(phoneListener, PhoneStateListener.LISTEN_CALL_STATE);
        }

    }

}

另外，我已经改变了你处理 TelephonyManager 的方式 - 我无法找到 TelephonyManagerSingletone 你在code提及。

Also, I have changed the way you deal with TelephonyManager - I couldn't find that TelephonyManagerSingletone that you mentioned in your code.

我希望这可以帮助别人！

I hope this helps somebody!

这篇关于TelephonyManager.CALL_STATE_RINGING调用的两倍，而一个呼叫振铃的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！