update_model.dart
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import 'dart:io';
import 'dart:math';
import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:install_plugin/install_plugin.dart';
import 'package:one_key/models/version.dart';
import 'package:one_key/net/dio_util.dart';
import 'package:one_key/res/colors.dart';
import 'package:one_key/widgets/MyDivider.dart';
import 'package:one_key/widgets/v_empty_view.dart';
import 'package:path_provider/path_provider.dart';
import 'package:permission_handler/permission_handler.dart';
class UpdateModel {
int _progress; //下载进度
Function _setState;
//检查更新
checkUpdate(BuildContext context) {
Future.delayed(new Duration(milliseconds: 1000), () {
if (Random().nextInt(10) > 0) {
Version version = Version.fromJson({
"version": "v1.0.3",
"file_url":
"http://xt03.colorcun.com/uploads/20191105/67e38355c41528b24a97e9ac71a221ea.apk",
"content": "1.bug修复;\n2.功能更新;"
});
showUpdateDialog(context, version);
}
});
}
//版本更新弹框
showUpdateDialog(BuildContext pageContext, Version version) {
showDialog(
context: pageContext,
builder: (context) {
Widget widget = Container(
decoration: BoxDecoration(
color: MyColours.color_ffffff,
borderRadius: BorderRadius.all(
Radius.circular(ScreenUtil().setWidth(30)))),
padding: EdgeInsets.only(top: ScreenUtil().setWidth(50)),
child: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Container(
padding: EdgeInsets.symmetric(
horizontal: ScreenUtil().setWidth(60)),
child: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Center(
child: Text(
"${version.version}版本更新啦",
style: TextStyle(
fontSize: ScreenUtil().setSp(36),
color: MyColours.color_353535),
),
),
VEmptyView(20),
Text(
version.content,
style: TextStyle(
fontSize: ScreenUtil().setSp(28),
color: MyColours.color_353535),
)
],
),
),
VEmptyView(40),
MyDivider(double.infinity, ScreenUtil().setWidth(1)),
Container(
height: ScreenUtil().setWidth(94),
child: Row(
children: <Widget>[
Expanded(
child: GestureDetector(
onTap: () {
Navigator.of(context).pop();
},
child: Text(
"下次一定",
style: TextStyle(
fontSize: ScreenUtil().setSp(34),
color: MyColours.color_777777),
textAlign: TextAlign.center,
),
),
),
MyDivider(ScreenUtil().setWidth(1),ScreenUtil().setWidth(94)),
Expanded(
child: GestureDetector(
onTap: () {
Navigator.of(context).pop();
if (Platform.isAndroid) {
downloadApk(pageContext, version.file_url);
} else {
InstallPlugin.gotoAppStore(
"itms-apps://itunes.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=1510697490");
}
},
child: Text(
"立即更新",
style: TextStyle(
fontSize: ScreenUtil().setSp(34),
color: MyColours.color_2bb5b7),
textAlign: TextAlign.center,
),
),
)
],
),
)
],
),
);
return Center(child: UnconstrainedBox(
constrainedAxis: Axis.vertical,
child: ConstrainedBox(
constraints: BoxConstraints(maxWidth: ScreenUtil().setWidth(560)),
child: DefaultTextStyle(
style: TextStyle(decoration: TextDecoration.none),
child: widget,
)
),
),);
return AlertDialog(
content: widget,
contentPadding: EdgeInsets.zero,
);
});
}
//下载更新版本
Future<void> downloadApk(BuildContext context, String file_url) async {
Map<PermissionGroup, PermissionStatus> permissions =
await PermissionHandler().requestPermissions([PermissionGroup.storage]);
if (permissions[PermissionGroup.storage] == PermissionStatus.granted) {
final dir = await getExternalStorageDirectory();
String savePath = dir.path + "/one_key";
Directory directory=new Directory(savePath);
if(directory.existsSync()){//删除历史apk
final List<FileSystemEntity> files=directory.listSync();
for(FileSystemEntity file in files){
file.deleteSync();
}
}
showDownloadProgress(context);
DioUtil().download(file_url, savePath, onProgress: (received, total) {
if(_progress!=100){
int progress = ((received / total) * 100).round();
_progress = progress;
_setState(() {});
}
if (received == total) {
//下载完成
InstallPlugin.installApk(savePath, "com.naji.one_key");
}
});
}
}
//显示下载进度条
showDownloadProgress(BuildContext context) {
showDialog(
context: context,
barrierDismissible: false,
builder: (ct) {
return AlertDialog(
content: StatefulBuilder(builder: (context, setState) {
if (_progress==100) {
Navigator.of(ct).pop();
}
_setState = setState;
return Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
CircularProgressIndicator(),
Padding(
padding: EdgeInsets.only(top: 26),
child: Text("正在下载...${_progress}%"),
)
],
);
}));
});
}
}