android在我的應用程序中發出錯誤呼叫

Question

我需要從我的應用程序打電話給某個預定義的電話號碼，並且經過一段時間間隔後，讓我們說10秒後鈴聲響起，我想自動終止此呼叫，一個錯誤的電話。這可能嗎？ 我用下面的代碼來啓動電話

try { 
      Intent callIntent = new Intent(Intent.ACTION_CALL); 
      callIntent.setData(Uri.parse("tel:"+phoneNumber); 
      startActivity(callIntent); 
     } catch (ActivityNotFoundException e) { 
      Log.e("helloandroid dialing example", "Call failed", e); 
     } 

，但我不知道如何制止這種特定的呼叫。

Answer 1

成功發起呼叫後。您可以隨時使用endCall()在您所需的時間間隔過後斷開連接。

閱讀此線程和搜索類似的人在這個網站： https://stackoverflow.com/a/9987399/2021499

Answer 2

首先，你需要發起呼叫，並監視其狀態，然後在特定的時間，編程結束通話。

你已經知道如何initiate the call，我添加了一個PhoneStateListener到monitor它的狀態，我也加入了code snippet介紹如何end call programmatically。

發起呼叫，

private void establishCall() 
{ 
      TelephonyManager tManager = (TelephonyManager) 
       getSystemService(Context.TELEPHONY_SERVICE); 
    if (tManager .getSimState() != TelephonyManager.SIM_STATE_ABSENT) 
    {     

     try { 
      Intent callIntent = new Intent(Intent.ACTION_CALL).addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
      callIntent.setData(Uri.parse("tel:"+phoneNumber)); 
      startActivity(callIntent); 



      ListenToPhoneState listener = new ListenToPhoneState(); 
      tManager.listen(listener, PhoneStateListener.LISTEN_CALL_STATE); 
     } catch (Exception e) { 
      Log.e("Call failed", e.toString()); 
     } 

    } 
    else 
    { 
     Toast.makeText(this, "Insert a Simcard into your device.", Toast.LENGTH_LONG).show(); 
    } 
} 

這裏是監聽的代碼，

 private class ListenToPhoneState extends PhoneStateListener { 

     boolean callEnded=false; 
     public void onCallStateChanged(int state, String incomingNumber) { 

      switch (state) { 
      case TelephonyManager.CALL_STATE_IDLE: 
       UTILS.Log_e("State changed: " , state+"Idle"); 

       break; 
      case TelephonyManager.CALL_STATE_OFFHOOK: 
       UTILS.Log_e("State changed: " , state+"Offhook"); 
       callEnded=true; 
       break; 
      case TelephonyManager.CALL_STATE_RINGING: 
       UTILS.Log_e("State changed: " , state+"Ringing"); 

     //apply your logic here to wait for few seconds before calling killCall(this) function to end call 


       break; 


      default: 
       break; 
      } 
     } 

    } 

這裏是結束內部清單以下權限將當前呼叫

public boolean killCall(Context context) { 
try { 
    // Get the boring old TelephonyManager 
    TelephonyManager telephonyManager = 
     (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); 

    // Get the getITelephony() method 
    Class classTelephony = Class.forName(telephonyManager.getClass().getName()); 
    Method methodGetITelephony = classTelephony.getDeclaredMethod("getITelephony"); 

    // Ignore that the method is supposed to be private 
    methodGetITelephony.setAccessible(true); 

    // Invoke getITelephony() to get the ITelephony interface 
    Object telephonyInterface = methodGetITelephony.invoke(telephonyManager); 

    // Get the endCall method from ITelephony 
    Class telephonyInterfaceClass = 
     Class.forName(telephonyInterface.getClass().getName()); 
    Method methodEndCall = telephonyInterfaceClass.getDeclaredMethod("endCall"); 


     // Invoke endCall() 
     methodEndCall.invoke(telephonyInterface); 

    } catch (Exception ex) { // Many things can go wrong with reflection calls 
     Logger.e("PhoneStateReceiver **" + ex.toString()); 
     return false; 
    } 
    return true; 
} 

代碼要求，

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

我希望它會有幫助！