Fiji/ysairplane3/lib/main.dart

import 'dart:io';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_alipay/flutter_alipay.dart';
import 'package:fluwx/fluwx.dart';
import 'package:flutter_localizations/flutter_localizations.dart';
import 'package:path_provider/path_provider.dart';
import 'package:ysairplane2/code/YSWelcome.dart';
import 'package:ysairplane2/tools/YSTools.dart';
import 'code/YSTabbar.dart';
import 'code/view/YSBannerView.dart';
import 'tools/YSLocalizationsDelegate.dart';

void main() {
  try{
    WidgetsFlutterBinding.ensureInitialized();
    SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle(statusBarColor: Colors.transparent,statusBarIconBrightness: Brightness.dark,),);
    SystemChrome.setPreferredOrientations([
      DeviceOrientation.portraitUp,
      DeviceOrientation.portraitDown
    ]);
    _clearCache();
    PaintingBinding.instance.imageCache.clear();
    PaintingBinding.instance.imageCache.maximumSize=2000; //最多2000张
    PaintingBinding.instance.imageCache.maximumSizeBytes = 1000 << 20; //最大200M
    _initFluwx();
    FlutterAlipay.setIosUrlSchema("feijizhifubao");
    checkVersion().then((value){
      runApp(MyApp(isnFirst: value,));
    });
  }catch(e){
    print('===============================$e===============================');
  }
}

class MyApp extends StatelessWidget {
  final isnFirst;
  const MyApp({Key key, this.isnFirst}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      navigatorObservers: [routeObserver],
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        primaryColor: Color(0xFF0088FF),
        visualDensity: VisualDensity.adaptivePlatformDensity,
        backgroundColor: Color(0xFFF5F6F8),
      ),
      routes: {
        "/home": (BuildContext context) => YSTabbar(),
      },
      localeListResolutionCallback:
          (List<Locale> locales, Iterable<Locale> supportedLocales) {
        return Locale('zh');
      },
      localeResolutionCallback:
          (Locale locale, Iterable<Locale> supportedLocales) {
        return Locale('zh');
      },
      localizationsDelegates: [
        ZhCupertinoLocalizations.delegate,
        GlobalMaterialLocalizations.delegate,
        GlobalWidgetsLocalizations.delegate,
        GlobalCupertinoLocalizations.delegate,
      ],
      supportedLocales: [
        const Locale('zh', 'CH'),
        const Locale('en', 'US'),
      ],
      home: isnFirst==true?YSTabbar():YSWelcome()
    );
  }
}

_initFluwx() async {
  await registerWxApi(
      appId: "wx7e62294a5bf6e206",
      doOnAndroid: true,
      doOnIOS: true,
      universalLink: "https://api.s-fly.cn/app/");
  var result = await isWeChatInstalled;
  print("is installed $result");
}

void _clearCache() async {
  Directory tempDir = await getTemporaryDirectory();
  //删除缓存目录
  await delDir(tempDir);
}
Future<Null> delDir(FileSystemEntity file) async {
  if (file is Directory) {
    final List<FileSystemEntity> children = file.listSync();
    for (final FileSystemEntity child in children) {
      var isHave =await child.exists(); //返回真假
      if(isHave){
        await delDir(child);
      }
    }
  }
  await file.delete();
}