Question

当我的Android应用程序运行时，我接到一个电话，要么我参加通话，要么取消它我的应用程序在后台关闭。

我希望我的应用在后台运行。

当我接到onStop方法的电话时，我能够看到我添加的Toast消息

@Override
    protected void onStop() {
        super.onStop();
        Toast.makeText(getApplicationContext(), "onStop()", Toast.LENGTH_LONG).show();
}

电话结束后我该怎么办？我需要打开我的应用程序吗？

这是我的onResume

的代码片段

@Override
    protected void onResume() {
        super.onResume();
        Toast.makeText(getApplicationContext(), "on Resume being called", Toast.LENGTH_LONG).show();
}

这在活动开始时被调用

@Override
    protected void onPause() {
        super.onPause();
}

我应该在onPause和onResume中添加什么才能返回我的应用

Answer 1

使用电话管理器跟踪电话呼叫状态：

 public class Main_Activity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    TelephonyManager tele = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
    PhoneStateListener call = new PhoneStateListener(){
        public void onCallStateChanged (int state , String incomingNumber){
        if(state==TelephonyManager.CALL_STATE_RINGING)
        {
            Log.e ("Phone State" , "_________________Phone is Ringing");
            Toast.makeText(getBaseContext(), "Ringing", Toast.LENGTH_SHORT).show();
        }
        else if (state==TelephonyManager.CALL_STATE_OFFHOOK)
        {
            Log.e ("Call" , "_________________Phone Call");
            Toast.makeText(getBaseContext(), "On Call", Toast.LENGTH_SHORT).show();
        }

        else if (state==TelephonyManager.CALL_STATE_IDLE)
        {
            Log.e ("Call" , "_________________No Call");
            Toast.makeText(getBaseContext(), "Ideal", Toast.LENGTH_SHORT).show();
        }
        }
    };
    tele.listen(call,PhoneStateListener.LISTEN_CALL_STATE);
}

对我而言，它完美无缺。

Answer 2

您可以使用BroadcastReceiver来收听手机状态。并在电话结束时恢复您的应用。所以你应该添加一个PhoneStateBroadcastReceiver

添加到清单文件

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

PhoneStateBroadcastReceiver类

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);
    }
}

Android应用程序关闭中断

2 个答案: