当应用程序从通知或外部Intent中打开时，SingleTop launchMode失败。

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我有这个最小化的应用程序。

MainActivity.java

public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); public void onNewIntent(Intent intent){ super.onNewIntent(intent);

活动B.java

public class ActivityB extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_b);
AndroidManifest.xml
        <activity
            android:name=".activities.MainActivity"
            android:exported="true"
            android:launchMode="singleTop"
            android:theme="@style/AppTheme.NoActionBar">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <action android:name="android.intent.action.VIEW" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
            <intent-filter>
                <action android:name="android.intent.action.SEND" />
                <category android:name="android.intent.category.DEFAULT" />
                <data android:mimeType="*/*" />
                <data android:mimeType="audio/*" />
            </intent-filter>
        </activity>
        <activity
            android:name=".activities.ActivityB"
            android:exported="false"
            android:parentActivityName=".activities.MainActivity"
            android:theme="@style/AppTheme.NoActionBar">
        </activity>
1) I launch a notification from a Service with the app closed (killed) using TaskStackBuilder to  open MainActivity -> ActivityB in the stack just as documentation says (https://developer.android.com/training/notify-user/navigation) :
        Intent resultIntent = new Intent(this, ActivityB.class);
        TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
        stackBuilder.addNextIntentWithParentStack(resultIntent);
        PendingIntent resultPendingIntent =
                stackBuilder.getPendingIntent(0,
                        PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_IMMUTABLE);
        NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context, "1")
                .setSmallIcon(R.mipmap.ic_launcher)
                .setContentTitle("Title")
                .setContentText("Message")
                .setAutoCancel(true)
                .setContentIntent(resultPendingIntent);
        android.app.Notification buildNotification = mBuilder.build();
        NotificationManager mNotifyMgr = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
        mNotifyMgr.notify(1, buildNotification);
ActivityB在通知点击时被打开，但使用后退按钮并没有转到父活动（MainActivity），而这正是你想用TaskStackBuilder得到的。它让应用程序关闭。
2)当打开了MainActivity的应用处于后台时（主按钮），如果我从另一个应用中分享一个音频文件到该应用，onCreate总是被调用，而不是onNewIntent。看一下launchMode的文档，由于MainActivity是singleTop，并且在堆栈的顶部，它不应该调用onNewIntent吗？
Tested in
Android 10 & Android 11