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public class VG extends ViewGroup {
    private static final String TAG = "VG";
    private final ViewDragHelper mDragHelper;
    private Rect[] mBounds = new Rect[4];

    public VG(Context context) {
        super(context);
        int[] colors = {Color.RED, Color.GREEN, Color.BLUE, Color.YELLOW};
        for (int i = 0; i < 4; i++) {
            TextView tv = new TextView(getContext());

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package com.example.app.myapplication;

import android.content.Context;
import android.util.AttributeSet;
import android.view.View;

/*
res/layout/fsvt.xml test layout file:

<?xml version="1.0" encoding="utf-8"?>

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package com.example.app.myapplication;

import android.database.Cursor;
import android.database.CursorWrapper;

public class ColumnExtenderCursor extends CursorWrapper {

    private final String[] columnNames;

    public ColumnExtenderCursor(Cursor cursor, String... newColumns) {

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// add in Activity#onCreate
        ListView lv = new ListView(this);
        setContentView(lv);

        Uri uri = ContactsContract.Contacts.CONTENT_URI;
        Wrapper c = Wrapper.query(getContentResolver(), uri, null, null, null, ContactsContract.Contacts.DISPLAY_NAME, getResources());
        String[] from = {
                ContactsContract.Contacts.DISPLAY_NAME,
                Wrapper.PHONES,
        };

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    abstract class DecoratedDrawable extends LevelListDrawable {
        public DecoratedDrawable(Context ctx, int resId) {
            TypedArray typedArray = ctx.obtainStyledAttributes(new int[] {resId});
            Drawable drawable = typedArray.getDrawable(0);
            typedArray.recycle();
            if (drawable == null) {
                drawable = ctx.getResources().getDrawable(resId);
            }
            init(drawable);
        }

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    class CircleBitmapDrawable extends Drawable {
        Bitmap bitmap;
        Paint maskPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
        Paint borderPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
        float side;
        float radius;

        public CircleBitmapDrawable(Bitmap wrappedBitmap, float borderWidth, int borderColor) {
            bitmap = wrappedBitmap;
            borderPaint.setStyle(Paint.Style.STROKE);

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class RoundedListView extends StatefulWidget {
  @override
  _RoundedListViewState createState() => _RoundedListViewState();
}

class _RoundedListViewState extends State<RoundedListView> with TickerProviderStateMixin {
  var size = 32;

  @override
  Widget build(BuildContext context) {

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/*
 * 
    <declare-styleable name="GridSpanLayout">
        <attr name="rows" format="integer" />
        <attr name="columns" format="integer" />

        <attr name="column" format="integer" />
        <attr name="row" format="integer" />
        <attr name="columnSpan" format="integer" />
        <attr name="rowSpan" format="integer" />

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class LongPressRipple extends StatefulWidget {
  final Widget child;
  final VoidCallback onLongPress;

  LongPressRipple({
    Key key,
    this.child,
    @required this.onLongPress,
  }) : assert(onLongPress != null), super(key: key);

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class FruitColorizer extends TextEditingController {
  final Map<String, TextStyle> mapping;
  final Pattern pattern;

  FruitColorizer(this.mapping)
    : pattern = RegExp(mapping.keys.map((key) => RegExp.escape(key)).join('|'));

  FruitColorizer.fromColors(Map<String, Color> colorMap)
    : this(colorMap.map((text, color) => MapEntry(text, TextStyle(color: color))));