View View objects are the basic building blocks of User Interface(UI) elements in Android. View is a simple rectangle box which responds to the user’s actions. Examples are EditText, Button, CheckBox etc.. View refers to the android.view.View class, which is the base class of all UI classes. ViewGroup ViewGroup is the invisible container. It holds … Read more
I have made a small example of a recursive function: public void recursiveLoopChildren(ViewGroup parent) { for (int i = 0; i < parent.getChildCount(); i++) { final View child = parent.getChildAt(i); if (child instanceof ViewGroup) { recursiveLoopChildren((ViewGroup) child); // DO SOMETHING WITH VIEWGROUP, AFTER CHILDREN HAS BEEN LOOPED } else { if (child != null) { … Read more
While Bruce’s answer does solve the problem, it does it in a very brutal way which harms the UX, as it will clear the focus of every view once we did a scroll. It deals with the symptom of the problem but it does not solve the actual cause. how to reproduce the problem: Your … Read more
By default, onDraw() isn’t called for ViewGroup objects. Instead, you can override dispatchDraw(). Alternatively, you can enable ViewGroup drawing by calling setWillNotDraw(false) in your TableView constructor. EDIT: For #2: – Initialize it in the constructor, then just call rect.set() in your onLayout() method. For #3: – Yes, as far as I’m aware the super call … Read more