dukess

import android.widget.ListPopupWindow;
import android.widget.PopupWindow;
import android.widget.Spinner;

public static void avoidSpinnerDropdownFocus(Spinner spinner) {
    try {
        Field listPopupField = Spinner.class.getDeclaredField("mPopup");
        listPopupField.setAccessible(true);
        Object listPopup = listPopupField.get(spinner);
        if (listPopup instanceof ListPopupWindow) {

dukess

    /** Convert NV21 (YYYYYYYYY:VUVU) to I420 (YYYYYYYY:UU:VV)  
    Convert I420 (YYYYYYYY:UU:VV) to NV21 (YYYYYYYYY:VUVU) can be get here: https://gist.github.com/pnemonic78/2d8411ed6b0bd6c71b651800bc97eb8e
    */
    public byte[] NV21toI420(final byte[] input, byte[] output, final int width, final int height) {
        if (output == null) {
            output = new byte[input.length];
        }
        final int size = width * height;
        final int quarter = size / 4;
        final int v0 = size + quarter;