Android获取通话状态

[size=medium]1>添加读取手机状态的权限 [/size]

[size=medium]2>获取管理手机的系统服务[/size]

TelephonyManager tm = (TelephonyManager) this.getSystemService(Context.TELEPHONY_SERVICE); 

[size=medium]3>编写手机状态监听类 [/size]

public class exPhoneCallListener extends PhoneStateListener { 
public void onCallStateChanged(int state, String incomingNumber) {
 switch (state) { 
       case TelephonyManager.CALL_STATE_IDLE ://待机 
          break; 
       case TelephonyManager.CALL_STATE_OFFHOOK ://挂断 
          break; 
       case TelephonyManager.CALL_STATE_RINGING ://来电话 
         //来电免打扰程序要处理的关键事务 
          break; 
       default : 
         break; 
    } 
   super.onCallStateChanged(state, incomingNumber); 
  } 
} 

[size=medium]4>注册监听 [/size]

exPhoneCallListener myPhoneCallListener = new exPhoneCallListener();
 tm.listen(myPhoneCallListener,PhoneStateListener.LISTEN_CALL_STATE);