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androidview

Android - how to find multiple views with common attribute


I have a layout with multiple ImageViews, some of those images need to have the same onClickListener. I would like my code to be flexible and to be able to get a collection of those Views, iterate and add the listeners at run-time.

Is there a method like findViewById that will return a collection of Views rather than just a single one?


Solution

  • I've finally wrote this method (Updated thanks to @SuitUp (corrected username)):

    private static ArrayList<View> getViewsByTag(ViewGroup root, String tag){
        ArrayList<View> views = new ArrayList<View>();
        final int childCount = root.getChildCount();
        for (int i = 0; i < childCount; i++) {
            final View child = root.getChildAt(i);
            if (child instanceof ViewGroup) {
                views.addAll(getViewsByTag((ViewGroup) child, tag));
            } 
    
            final Object tagObj = child.getTag();
            if (tagObj != null && tagObj.equals(tag)) {
                views.add(child);
            }
    
        }
        return views;
    }
    

    It will return all views that have android:tag="TAG_NAME" attribute. Enjoy ;)