在我的xaml页面中,我在Stack Panel中有一个动态生成的ListBox,Textblocks和Textboxes,它还有一个"Page.BottomAppBar",它包含页面底部的CommandBar.
代码编辑1 :(提供完整的XAML UI代码)
<Page>
<ScrollViewer VerticalScrollBarVisibility="Auto">
<Grid Background="White">
<Grid.RowDefinitions>
<RowDefinition Height="60"></RowDefinition>
<RowDefinition Height="auto"></RowDefinition>
</Grid.RowDefinitions>
<Grid Grid.Row="0">
<TextBlock Foreground="#616161" x:Name="tbHeading1" Text="Event Details" Margin="15,0,0,0" Width="auto" TextWrapping="Wrap" VerticalAlignment="Center" FontFamily="Calibri" FontSize="28" HorizontalAlignment="Left"></TextBlock>
</Grid>
<!--<ScrollViewer VerticalScrollBarVisibility="Auto" >-->
<Grid Grid.Row="1">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<StackPanel Grid.Row="0" Background="White" Margin="0,0,0,1">
<!--EVENT TYPE-->
<TextBlock FontFamily="Arial MT Regular" Margin="15,0,0,0" Foreground="#616161" x:Name="tbEventType" Text="Event Type" FontSize="20"></TextBlock>
<ComboBox x:Name="cmbEventType" RequestedTheme="Light" Padding="5,0,0,0" PlaceholderText=" - Tap for Selection - " FontSize="16" FontFamily="Calibri" Width="auto" BorderBrush="#80b656" BorderThickness="2" SelectedIndex="-1" SelectionChanged="cmbEventType_SelectionChanged" Margin="15,0"> …
Run Code Online (Sandbox Code Playgroud) 我在本地运行 Angular 4 应用程序时收到“连接被拒绝”页面。
网址是http://localhost:4200/
使用命令运行应用程序ng serve --open
。
更新 1:angular.json
通过一些来源,我发现 Angular cli 文件现在已更改为
angular.json
.
以下是详细信息agnular.json
"$schema": "./node_modules/@angular/cli/lib/config/schema.json",
"version": 1,
"newProjectRoot": "projects",
"projects": {
"angular-forms": {
"root": "",
"sourceRoot": "src",
"projectType": "application",
"architect": {
"build": {
"builder": "@angular-devkit/build-angular:browser",
"options": {
"outputPath": "dist",
"index": "src/index.html",
"main": "src/main.ts",
"tsConfig": "src/tsconfig.app.json",
"polyfills": "src/polyfills.ts",
"assets": [
"src/assets",
"src/favicon.ico"
],
"styles": [
"src/styles.css"
],
"scripts": []
},
"configurations": {
"production": {
"optimization": true,
"outputHashing": "all",
"sourceMap": false,
"extractCss": true,
"namedChunks": …
Run Code Online (Sandbox Code Playgroud) 我有Parse.com支持的4个应用程序在PlayStore上直播,拥有500多万用户群.当Parse.com决定关闭他们的支持时,我们已成功将我们的后端迁移到Heroku并推出了应用程序的更新(更多更新,更多%的迁移).仍然有很多用户使用旧版本的应用程序(不更新他们的集成了Heroku的应用程序)
现在Parse.com的关闭越来越近了(2017年1月28日),我们想要模拟实际的灾难,这将给我们在parse.com关闭后使用该应用程序的用户的情况.
任何建议将不胜感激,提前致谢.
我的应用程序的一些实时用户遇到SQLite数据库损坏.当我们从用户收集日志时,我们发现以下详细信息:
E/SQLiteLog(14085): (11) database corruption at line 57189 of [b3bb660af9]
E/SQLiteLog(14085): (11) Invalid page count: nPage: 52, nPageFile: 50
E/SQLiteLog(14085): (11) lockBtree() error, rc: 11, printing out first page (size: 32768) of DB /data/data/com.app.testpackagename/files//db/statictext_v3.0_DE.db
E/SQLiteLog(14085): (11) Page (1) has been corrupted
E/SQLiteLog(13318): (11) database disk image is malformed
E/DefaultDatabaseErrorHandler(13318): Corruption reported by sqlite on database: /data/data/com.app.testpackagename/files//db/statictext_v3.0_DE.db
E/SQLiteLog(13318): (11) database corruption at line 57189 of [b3bb660af9]
E/SQLiteLog(13318): (11) Invalid page count: nPage: 52, nPageFile: 50
E/SQLiteLog(13318): (11) lockBtree() error, …
Run Code Online (Sandbox Code Playgroud) 我正在生产 Xamarin.iOS 应用程序,该应用程序在 iOS 14 设备上启动时请求本地网络许可。应用程序不使用任何 Bonjour 服务,也不使用任何特定于本地网络的内容。App有各种nuget包,包括Xamarin.Essentials、MvvmCross、Firebase服务、Realm DB等。
我已经浏览了developer.apple.com上的各种开放线程,包括WWDC2020视频,但仍然没有得到触发此权限对话框的原因。
我正在尝试roundToInt()
将双精度值转换为四舍五入的整数,但出现Unresolved Reference
异常。
我正在阅读 Kottlin的官方文档,但仍然没有运气。
代码:
编辑1:
fun solve(meal_cost: Double, tip_percent: Int, tax_percent: Int): Unit {
var tip = (meal_cost *tip_percent)/100
var tax = (meal_cost *tax_percent)/100
var totalCost = (tip+tax+meal_cost).roundToInt()
System.out.println("The total cost is "+totalCost+".")
}
Run Code Online (Sandbox Code Playgroud)
错误日志:
Solution.kt:25:41: error: unresolved reference: roundToInt
var totalCost = (tip+tax+meal_cost).roundToInt()
^
Run Code Online (Sandbox Code Playgroud) 我有以下 XML 代码,res/drawable
并将按钮设置background
为 this drawable
。但是,当我按下按钮时,它并没有改变color
. 感谢帮助
<item android:state_enabled="false"
android:drawable="@color/colorAccent">
</item>
<item android:state_enabled="true"
android:drawable="@color/colorPrimary">
</item>
<item
android:state_selected="false"
android:state_pressed="true"
android:drawable="@color/black">
</item>
Run Code Online (Sandbox Code Playgroud) android ×3
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