如何知道我是否在通話中使用Android？

Question

我想知道我是否在打電話。

如果我正在打電話，然後開始服務（服務部分是明確的）。我該怎麼做呢？

在參加電話會議時，我需要撥打服務......我不知道如何執行此操作？任何幫助？

Answer 1

你需要廣播接收機...

在艙單申報廣播接收器...

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

還宣佈用途的許可......

<uses-permission android:name="android.permission.READ_PHONE_STATE" /> 

廣播接收器類。 ..

package x.y; 

import android.content.BroadcastReceiver; 
import android.content.Context; 
import android.content.Intent; 
import android.telephony.PhoneStateListener; 
import android.telephony.TelephonyManager; 

public class PhoneStateBroadcastReceiver extends BroadcastReceiver{ 

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

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

    } 

} 

還有一類定製手機狀態聽衆......

package x.y; 
import android.content.Context; 
import android.telephony.PhoneStateListener; 
import android.telephony.TelephonyManager; 

public class CustomPhoneStateListener extends PhoneStateListener { 

    //private static final String TAG = "PhoneStateChanged"; 
    Context context; //Context to make Toast if required 
    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: 
      //when Idle i.e no call 
      Toast.makeText(context, "Phone state Idle", Toast.LENGTH_LONG).show(); 
      break; 
     case TelephonyManager.CALL_STATE_OFFHOOK: 
      //when Off hook i.e in call 
      //Make intent and start your service here 
      Toast.makeText(context, "Phone state Off hook", Toast.LENGTH_LONG).show(); 
      break; 
     case TelephonyManager.CALL_STATE_RINGING: 
      //when Ringing 
      Toast.makeText(context, "Phone state Ringing", Toast.LENGTH_LONG).show(); 
      break; 
     default: 
      break; 
     } 
    } 
} 

Answer 2

只能諳呼叫到來，但你不能修改這個。 :( 看到

• CALL_STATE_IDLE
• CALL_STATE_OFFHOOK
• CALL_STATE_RINGING

這 why 2.3 version of android does not hava android.permission.MODIFY_PHONE_STATE ? and what is the solution for this?

Answer 3

TelephonyManager.getCallState()返回一個如果這符合您的要求，它比吹笛的代碼少得多的多綜合解決方案。