如何在手机铃声响起时查看

Question

我想自定义电话铃声视图并显示文本视图。现在我如何访问该视图并自定义它？或者，如果我无法访问它，我可以做些什么来在该视图中显示TextView？

Answer 1

您需要创建一个应用程序，并在活动中扩展BroadcastListener服务，并为该活动提供所需的布局1） 在AndroidManifest.xml 中声明广播接收器

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

也允许

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

你的主要MainActivity.java应该是类似于这个文件

    public class MainActivity extends BroadcastReceiver {
public void onReceive(Context context, Intent intent) {
try {
           // TELEPHONY MANAGER class object to register one listner
            TelephonyManager tmgr = (TelephonyManager) context
                    .getSystemService(Context.TELEPHONY_SERVICE);
            //Create Listner
            MyPhoneStateListener PhoneListener = new MyPhoneStateListener();
            // Register listener for LISTEN_CALL_STATE
            tmgr.listen(PhoneListener, PhoneStateListener.LISTEN_CALL_STATE);
    } catch (Exception e) {
        Log.e("Phone Receive Error", " " + e);
    }
}
private class MyPhoneStateListener extends PhoneStateListener {
    public void onCallStateChanged(int state, String incomingNumber) {
        Log.d("MyPhoneListener",state+"   incoming no:"+incomingNumber);
        if (state == 1) {
            String msg = "New Phone Call Event. Incomming Number : "+incomingNumber;
            int duration = Toast.LENGTH_LONG;
            Toast toast = Toast.makeText(pcontext, msg, duration);
            toast.show();
        }
    }
}

}

当接到电话时，此代码将显示toast，您可以根据需要更改布局文件和显示。