如何从onResume上的片段中删除所有小部件

Question

I have a fragment that contains many buttons that were added to the layout dynamically. Because they were added dynamically I didn't assign them ID's to reference them.

In my main activity's onResume, I want to be able to just clear all widgets in this certain fragment without needing to reference each button by ID to remove it. Is there a way I can do this?

Possibly running the following command but applied to all Buttons without referencing particular ID's:

button.setVisibility(View.GONE);

EDIT:

for (int i = 0; i < R.layout.grid_cell.getCount(); i++) {
View v = R.layout.grid_cell.getChildAt(i);
R.layout.grid_cell.removeView(v);
// or you can check the view
//if (v instanceof Button) {
//    layout.removeView(v);
//}
}

Answer 1

in your onResume()

for (int i = 0; i < layout.getChildCount(); i++) {
        View v = layout.getChildAt(i);
        layout.removeView(v);
      // or you can check the view
      //if (v instanceof Button) {
      //    layout.removeView(v);
      //}
    }

Edit "layout" is not layout file.

RelativeLayout layout= (RelativeLayout) findViewById(R.id.root);

If you're using RecyclerView you must return View of each row item. For example if you want remove views in onResume(), you can return the view like your own itemClickListener into activity. As the result the View is your row's root View. And than you can get view.getChildCount() and put it into loop. It doesn't matter GridLayout or others. The think is same.