natintosh

import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'dart:math' as math;

class CustomLayout extends MultiChildRenderObjectWidget {
  
  CustomLayout({
    Key key,
    List<Widget> children = const <Widget>[],
  }) : super(key: key, children: children);

natintosh

Context context = view.getContext();
ContentResolver cr = context.getContentResolver();
ContentValues values;

try {
    // create a file for test
    File file = new File(context.getFilesDir(), "1234568");
    file.createNewFile();
    try (OutputStream os = new FileOutputStream(file)) {
        os.write("test".getBytes());

natintosh

{
    "USD": {
        "symbol": "$",
        "name": "US Dollar",
        "symbol_native": "$",
        "decimal_digits": 2,
        "rounding": 0,
        "code": "USD",
        "name_plural": "US dollars"
    },