android - 调用了 BroadcastReceiver 但未调用 PhoneStateListener

Question

在调试下面的代码时，BroadcastReceiverCustom 正在 已调用但 PhoneStateListenerCustom 未调用。

现在我只在 BroadcastReceiverCustom 中执行所需的操作， 但可能不是最好的地方。 有什么建议为什么不调用 PhoneStateListener 吗？ 由于可能的原因已经花了很多时间，不知道？？ list 文件都是正确的，具有正确的权限。 我没有看到运行时异常。

BroadcastReceiverCustom.java

public class BroadcastReceiverCustom extends BroadcastReceiver {

private static final String TAG = "BroadcastReceiverCustom";

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

        Log.v(TAG, "WE ARE INSIDE!!!!!!!!!!!");

        TelephonyManager telephony = (TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE);
        PhoneStateListenerCustom phoneStateListenerCustom = new PhoneStateListenerCustom();
        telephony.listen(phoneStateListenerCustom, PhoneStateListener.LISTEN_CALL_STATE);
    }
}

PhoneStateListenerCustom.java

public class PhoneStateListenerCustom extends PhoneStateListener {

    private static final String TAG = "PhoneStateListenerCustom";

    public void onCallStateChange(int state, String incomingNumber){

        Log.v(TAG, "WE ARE INSIDE!!!!!!!!!!!");
        switch(state){
            case TelephonyManager.CALL_STATE_RINGING:
                 Log.d(TAG, "RINGING");
                 break;
        }

        super.onCallStateChanged(state, incomingNumber);

    }
}

list 文件

<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<receiver android:name=".BroadcastReceiverCustom">
    <intent-filter>
        <action android:name="android.intent.action.PHONE_STATE" />
    </intent-filter>
</receiver>

Answer 1

您不应在 BroadcastReceiver 中实例化 TelephonyManager 和 PhoneStateListener。这是一些示例代码:

在 Activity 中:

EndCallListener callListener = new EndCallListener;
TelephonyManager mTM = (TelephonyManager)this.getSystemService(Context.TELEPHONY_SERVICE);
mTM.listen(callListener, PhoneStateListener.LISTEN_CALL_STATE);

private class EndCallListener extends PhoneStateListener {
    @Override
    public void onCallStateChanged(int state, String incomingNumber) {
        if(TelephonyManager.CALL_STATE_RINGING == state) {
            Log.i(LOG_TAG + "Listener", "RINGING, number: " + incomingNumber);
        }
        if(TelephonyManager.CALL_STATE_OFFHOOK == state) {
            Log.i(LOG_TAG + "Listener", "OFFHOOK, number: " + incomingNumber);
        }
        if(TelephonyManager.CALL_STATE_IDLE == state) {
            Log.i(LOG_TAG + "Listener", "IDLE, number: " + incomingNumber);
        }
    }
}