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Чтение текста из (Facebook) RecyclerView с AccessibilityService

Как я могу увидеть текст неконцентрированных детей (элементов) RecyclerView?

Моя служба доступности должна считывать текст с экрана, который содержит ключевые слова. Это хорошо работает в большинстве ситуаций, за исключением случаев, когда я имею дело с RecyclerViews, особенно в приложении Facebook.

Оба экрана Facebook и комментариев основаны на RecyclerView и, похоже, не предоставляют мне доступ к тексту, который мне нужен из их событий доступности.

Что я пробовал:

public void onAccessibilityEvent(AccessibilityEvent event) {

    //I've tried looping through event.getText() and it does not contain the text entries

    //I've also tried the following (with various null checks)
    AccessibilityRecordCompat record = AccessibilityEventCompat.asRecord(event);
    AccessibilityNodeInfoCompat source = record.getSource();
    List<AccessibilityNodeInfoCompat> nodes = source.findAccessibilityNodeInfosByText("...");
    //(and loop through the entries)

    //I've also tried limiting to the class name "android.support.v7.widget.RecyclerView"
    //and looking at parcelableData

    //In the facebook app, the following is always null too
    source.findFocus(AccessibilityNodeInfoCompat.FOCUS_ACCESSIBILITY);

}

Нигде, похоже, не содержат данных, которые мне нужны. В качестве примера при открытии экрана комментариев/наложения из сообщения я могу видеть весь текстовый контент. ИСКЛЮЧИТЬ сами комментарии (которые находятся в представлении ресайклера).

Журналы сведений о событии, которые я могу видеть:

Вот что я вижу для комментариев наложения с сообщением с единственным комментарием

Event: EventType: TYPE_WINDOW_CONTENT_CHANGED; PackageName: com.facebook.katana; MovementGranularity: 0; Action: 0 [ ClassName: android.support.v7.widget.RecyclerView; Text: []; ContentDescription: null; ItemCount: 100; CurrentItemIndex: -1; IsEnabled: true; IsPassword: false; IsChecked: false; IsFullScreen: false; Scrollable: true; BeforeText: null; FromIndex: 13; ToIndex: 24; ScrollX: -1; ScrollY: -1; MaxScrollX: -1; MaxScrollY: -1; AddedCount: -1; RemovedCount: -1; ParcelableData: null ]; recordCount: 0
Event: EventType: TYPE_WINDOW_STATE_CHANGED;   PackageName: com.facebook.katana; MovementGranularity: 0; Action: 0 [ ClassName: X.BGT; Text: []; ContentDescription: null; ItemCount: -1; CurrentItemIndex: -1; IsEnabled: true; IsPassword: false; IsChecked: false; IsFullScreen: true; Scrollable: false; BeforeText: null; FromIndex: -1; ToIndex: -1; ScrollX: -1; ScrollY: -1; MaxScrollX: -1; MaxScrollY: -1; AddedCount: -1; RemovedCount: -1; ParcelableData: null ]; recordCount: 0
Event: EventType: TYPE_WINDOW_CONTENT_CHANGED; PackageName: com.facebook.katana; MovementGranularity: 0; Action: 0 [ ClassName: android.support.v7.widget.RecyclerView; Text: []; ContentDescription: null; ItemCount: 1; CurrentItemIndex: -1; IsEnabled: true; IsPassword: false; IsChecked: false; IsFullScreen: false; Scrollable: false; BeforeText: null; FromIndex: 0; ToIndex: 0; ScrollX: -1; ScrollY: -1; MaxScrollX: -1; MaxScrollY: -1; AddedCount: -1; RemovedCount: -1; ParcelableData: null ]; recordCount: 0
Event: EventType: TYPE_WINDOW_CONTENT_CHANGED; PackageName: com.facebook.katana; MovementGranularity: 0; Action: 0 [ ClassName: android.view.ViewGroup; Text: []; ContentDescription: null; ItemCount: -1; CurrentItemIndex: -1; IsEnabled: true; IsPassword: false; IsChecked: false; IsFullScreen: false; Scrollable: false; BeforeText: null; FromIndex: -1; ToIndex: -1; ScrollX: -1; ScrollY: -1; MaxScrollX: -1; MaxScrollY: -1; AddedCount: -1; RemovedCount: -1; ParcelableData: null ]; recordCount: 0
Event: EventType: TYPE_WINDOW_CONTENT_CHANGED; PackageName: com.facebook.katana; MovementGranularity: 0; Action: 0 [ ClassName: android.widget.FrameLayout; Text: []; ContentDescription: Photo; ItemCount: -1; CurrentItemIndex: -1; IsEnabled: true; IsPassword: false; IsChecked: false; IsFullScreen: false; Scrollable: false; BeforeText: null; FromIndex: -1; ToIndex: -1; ScrollX: -1; ScrollY: -1; MaxScrollX: -1; MaxScrollY: -1; AddedCount: -1; RemovedCount: -1; ParcelableData: null ]; recordCount: 0
Event: EventType: TYPE_WINDOW_CONTENT_CHANGED; PackageName: com.facebook.katana; MovementGranularity: 0; Action: 0 [ ClassName: android.widget.FrameLayout; Text: []; ContentDescription: null; ItemCount: -1; CurrentItemIndex: -1; IsEnabled: true; IsPassword: false; IsChecked: false; IsFullScreen: false; Scrollable: false; BeforeText: null; FromIndex: -1; ToIndex: -1; ScrollX: -1; ScrollY: -1; MaxScrollX: -1; MaxScrollY: -1; AddedCount: -1; RemovedCount: -1; ParcelableData: null ]; recordCount: 0
Event: EventType: TYPE_WINDOW_CONTENT_CHANGED; PackageName: com.facebook.katana; MovementGranularity: 0; Action: 0 [ ClassName: android.widget.ImageButton; Text: []; ContentDescription: Stickers; ItemCount: -1; CurrentItemIndex: -1; IsEnabled: false; IsPassword: false; IsChecked: false; IsFullScreen: false; Scrollable: false; BeforeText: null; FromIndex: -1; ToIndex: -1; ScrollX: -1; ScrollY: -1; MaxScrollX: -1; MaxScrollY: -1; AddedCount: -1; RemovedCount: -1; ParcelableData: null ]; recordCount: 0
Event: EventType: TYPE_WINDOW_CONTENT_CHANGED; PackageName: com.facebook.katana; MovementGranularity: 0; Action: 0 [ ClassName: android.widget.FrameLayout; Text: []; ContentDescription: null; ItemCount: -1; CurrentItemIndex: -1; IsEnabled: true; IsPassword: false; IsChecked: false; IsFullScreen: false; Scrollable: false; BeforeText: null; FromIndex: -1; ToIndex: -1; ScrollX: -1; ScrollY: -1; MaxScrollX: -1; MaxScrollY: -1; AddedCount: -1; RemovedCount: -1; ParcelableData: null ]; recordCount: 0
Event: EventType: TYPE_WINDOW_CONTENT_CHANGED; PackageName: com.facebook.katana; MovementGranularity: 0; Action: 0 [ ClassName: android.widget.TextView; Text: []; ContentDescription: null; ItemCount: -1; CurrentItemIndex: -1; IsEnabled: true; IsPassword: false; IsChecked: false; IsFullScreen: false; Scrollable: false; BeforeText: null; FromIndex: -1; ToIndex: -1; ScrollX: -1; ScrollY: -1; MaxScrollX: -1; MaxScrollY: -1; AddedCount: -1; RemovedCount: -1; ParcelableData: null ]; recordCount: 0
Event: EventType: TYPE_WINDOW_STATE_CHANGED;   PackageName: com.facebook.katana; MovementGranularity: 0; Action: 0 [ ClassName: X.BGT; Text: [Be the first to like this., Like Button, Photo Comment, Write a comment…, Open GIF search, Stickers]; ContentDescription: null; ItemCount: -1; CurrentItemIndex: -1; IsEnabled: true; IsPassword: false; IsChecked: false; IsFullScreen: true; Scrollable: false; BeforeText: null; FromIndex: -1; ToIndex: -1; ScrollX: -1; ScrollY: -1; MaxScrollX: -1; MaxScrollY: -1; AddedCount: -1; RemovedCount: -1; ParcelableData: null ]; recordCount: 0

Я также попытался изучить детей источника, но представлены только ViewGroups (без представлений) и всегда с текстом null

Ancestor for 0 = [email protected]; boundsInParent: Rect(0, 0 - 1056, 236); boundsInScreen: Rect(12, 244 - 1068, 480); packageName: com.facebook.katana; className: android.view.ViewGroup; text: null; error: null; maxTextLength: -1; contentDescription: null; viewIdResName: null; checkable: false; checked: false; focusable: false; focused: false; selected: false; clickable: false; longClickable: false; contextClickable: false; enabled: true; password: false; scrollable: false; actions: [AccessibilityAction: ACTION_SELECT - null, AccessibilityAction: ACTION_CLEAR_SELECTION - null, AccessibilityAction: ACTION_ACCESSIBILITY_FOCUS - null, AccessibilityAction: ACTION_SHOW_ON_SCREEN - null]
Ancestor for 0, 0 = [email protected]; boundsInParent: Rect(0, 0 - 1056, 236); boundsInScreen: Rect(12, 244 - 1068, 480); packageName: com.facebook.katana; className: android.view.ViewGroup; text: null; error: null; maxTextLength: -1; contentDescription: null; viewIdResName: null; checkable: false; checked: false; focusable: false; focused: false; selected: false; clickable: false; longClickable: true; contextClickable: false; enabled: true; password: false; scrollable: false; actions: [AccessibilityAction: ACTION_SELECT - null, AccessibilityAction: ACTION_CLEAR_SELECTION - null, AccessibilityAction: ACTION_LONG_CLICK - null, AccessibilityAction: ACTION_ACCESSIBILITY_FOCUS - null, AccessibilityAction: ACTION_SHOW_ON_SCREEN - null]
Ancestor for 0, 0, 0 = [email protected]; boundsInParent: Rect(0, 0 - 828, 58); boundsInScreen: Rect(204, 262 - 1032, 320); packageName: com.facebook.katana; className: android.view.ViewGroup; text: null; error: null; maxTextLength: -1; contentDescription: null; viewIdResName: null; checkable: false; checked: false; focusable: false; focused: false; selected: false; clickable: true; longClickable: true; contextClickable: false; enabled: true; password: false; scrollable: false; actions: [AccessibilityAction: ACTION_SELECT - null, AccessibilityAction: ACTION_CLEAR_SELECTION - null, AccessibilityAction: ACTION_CLICK - null, AccessibilityAction: ACTION_LONG_CLICK - null, AccessibilityAction: ACTION_ACCESSIBILITY_FOCUS - null, AccessibilityAction: ACTION_SHOW_ON_SCREEN - null]
Ancestor for 0, 0, 0, 0 = [email protected]; boundsInParent: Rect(0, 0 - 268, 58); boundsInScreen: Rect(204, 262 - 472, 320); packageName: com.facebook.katana; className: android.view.ViewGroup; text: null; error: null; maxTextLength: -1; contentDescription: null; viewIdResName: null; checkable: false; checked: false; focusable: false; focused: false; selected: false; clickable: true; longClickable: false; contextClickable: false; enabled: true; password: false; scrollable: false; actions: [AccessibilityAction: ACTION_SELECT - null, AccessibilityAction: ACTION_CLEAR_SELECTION - null, AccessibilityAction: ACTION_CLICK - null, AccessibilityAction: ACTION_ACCESSIBILITY_FOCUS - null, AccessibilityAction: ACTION_SHOW_ON_SCREEN - null]
Ancestor for 0, 0, 1 = [email protected]; boundsInParent: Rect(0, 0 - 828, 48); boundsInScreen: Rect(204, 320 - 1032, 368); packageName: com.facebook.katana; className: android.view.ViewGroup; text: null; error: null; maxTextLength: -1; contentDescription: null; viewIdResName: null; checkable: false; checked: false; focusable: false; focused: false; selected: false; clickable: true; longClickable: true; contextClickable: false; enabled: true; password: false; scrollable: false; actions: [AccessibilityAction: ACTION_SELECT - null, AccessibilityAction: ACTION_CLEAR_SELECTION - null, AccessibilityAction: ACTION_CLICK - null, AccessibilityAction: ACTION_LONG_CLICK - null, AccessibilityAction: ACTION_ACCESSIBILITY_FOCUS - null, AccessibilityAction: ACTION_SHOW_ON_SCREEN - null]
Ancestor for 0, 0, 2 = [email protected]; boundsInParent: Rect(0, 0 - 828, 80); boundsInScreen: Rect(204, 382 - 1032, 462); packageName: com.facebook.katana; className: android.view.ViewGroup; text: null; error: null; maxTextLength: -1; contentDescription: null; viewIdResName: null; checkable: false; checked: false; focusable: false; focused: false; selected: false; clickable: false; longClickable: false; contextClickable: false; enabled: true; password: false; scrollable: false; actions: [AccessibilityAction: ACTION_SELECT - null, AccessibilityAction: ACTION_CLEAR_SELECTION - null, AccessibilityAction: ACTION_ACCESSIBILITY_FOCUS - null, AccessibilityAction: ACTION_SHOW_ON_SCREEN - null]
Ancestor for 0, 0, 2, 0 = [email protected]; boundsInParent: Rect(0, 0 - 93, 44); boundsInScreen: Rect(507, 394 - 600, 438); packageName: com.facebook.katana; className: android.view.ViewGroup; text: null; error: null; maxTextLength: -1; contentDescription: null; viewIdResName: null; checkable: false; checked: false; focusable: false; focused: false; selected: false; clickable: true; longClickable: false; contextClickable: false; enabled: true; password: false; scrollable: false; actions: [AccessibilityAction: ACTION_SELECT - null, AccessibilityAction: ACTION_CLEAR_SELECTION - null, AccessibilityAction: ACTION_CLICK - null, AccessibilityAction: ACTION_ACCESSIBILITY_FOCUS - null, AccessibilityAction: ACTION_SHOW_ON_SCREEN - null]
Ancestor for 0, 0, 2, 1 = [email protected]; boundsInParent: Rect(0, 0 - 114, 44); boundsInScreen: Rect(632, 394 - 746, 438); packageName: com.facebook.katana; className: android.view.ViewGroup; text: null; error: null; maxTextLength: -1; contentDescription: null; viewIdResName: null; checkable: false; checked: false; focusable: false; focused: false; selected: false; clickable: true; longClickable: false; contextClickable: false; enabled: true; password: false; scrollable: false; actions: [AccessibilityAction: ACTION_SELECT - null, AccessibilityAction: ACTION_CLEAR_SELECTION - null, AccessibilityAction: ACTION_CLICK - null, AccessibilityAction: ACTION_ACCESSIBILITY_FOCUS - null, AccessibilityAction: ACTION_SHOW_ON_SCREEN - null]

Я не уверен, что это возможно, или я могу принять совершенно неправильный подход. Я заметил, что в режиме TalkBack пользователь должен щелкнуть/сфокусировать отдельные элементы дочернего элемента RecyclerView до того, как они будут прочитаны, что не является вариантом для моего сервиса (который должен найти интересующие предметы)

4b9b3361

ОТВЕТЫ

Ответ 1

У меня возникла проблема с вложенными представлениями прокрутки, решена с рекурсивным поиском всех представлений, я думаю, вы уже пробовали это. Вот решение работает в моем случае, вы можете попробовать, это может сработать и для вас.

private AccessibilityNodeInfo accessbiltyContent(AccessibilityNodeInfo parentView,String strAddress) throws Exception {

    int childCount = parentView.getChildCount();


    for (int i = 0; i < childCount; ++i) {
        AccessibilityNodeInfo child = parentView.getChild(i);
        // child=null;
        if (child != null) {

            String strToAddress=strAddress+" > "+child.getClassName().toString();
            String nodeText="";

            if(child.getText() != null)
                nodeText=child.getText().toString();


            Log.v(TAG,"values =" +child.getClassName().toString(),nodeText,strToAddress));
            accessbiltyContent(child,strToAddress);

        }
        else {
            return null;
        }
    }

    return null;


}

Он будет перемещать все представления в родительском и печатает их для поиска.