android – 无法获取TelephonyManager.CALL_STATE_RINGING

概述我补充说,这是我的清单文件 – <receiver android:name=".ServiceReceiver"> <intent-filter> <action android:name="android.intent.action.PHONE_STATE" /> </intent-filter> </receiver></ap 我补充说,这是我的清单文件 –

<receiver androID:name=".ServiceReceiver">        <intent-filter>            <action androID:name="androID.intent.action.PHONE_STATE" />        </intent-filter>    </receiver></application><uses-permission androID:name="androID.permission.READ_PHONE_STATE"></uses-permission>

那么我的服务类就是这样 –

public class ServiceReceiver extends broadcastReceiver {@OverrIDepublic voID onReceive(Context context,Intent intent) {    MyPhonestateListener phoneListener = new MyPhonestateListener();    TelephonyManager telephony = (TelephonyManager) context            .getSystemService(Context.TELEPHONY_SERVICE);    telephony.Listen(phoneListener,PhonestateListener.ListEN_CALL_STATE);}

}

我的PhonestateListener是 –

public class MyPhonestateListener extends PhonestateListener {public voID onCallStateChanged(int state,String incomingNumber) {    Log.i("telephony-example","State changed: " + statename(state));}String statename(int state) {    switch (state) {    case TelephonyManager.CALL_STATE_IDLE:        Log.d("DEBUG","***********IDLE********");        return "IDle";    case TelephonyManager.CALL_STATE_OFFHOOK:        Log.d("DEBUG","***********OFFHOOK********");        return "Off hook";    case TelephonyManager.CALL_STATE_RINGING:        Log.d("DEBUG","***********RINGING********");        return "Ringing";    }    return Integer.toString(state);}

}

我可以看到IDLE状态.

但是当我打电话给我没有铃声状态.为什么？

解决方法 我想你正在混合两种方法来获取电话状态.如果您使用意向过滤器和广播接收器,则在接收器中不需要调用TelephonyManager的Listen().只需检查收到的意图如下：

public voID onReceive(Context context,Intent intent) {    String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);    String number = intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER);    if (TelephonyManager.EXTRA_STATE_RINGING.equals(state))    {        Log.d("MPR","Its Ringing [" + number + "]");    }    if (TelephonyManager.EXTRA_STATE_IDLE.equals(state))    {        Log.d("MPR","Its IDle");    }    if (TelephonyManager.EXTRA_STATE_OFFHOOK.equals(state))    {        Log.d("MPR","Its OffHook");    }}

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