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Studies on optimal code width?
... reader is to be able to read the book without having to crane the neck. A screen is typically not placed at the distance of a book, which means more characters per line can be used while keeping within the limits of the maximum eye angle. Also, code isn't read as much as it is perused, making this ...
I want my android application to be only run in portrait mode?
...d:name=".YourActivity"
android:configChanges="orientation"
android:screenOrientation="portrait"/>
Let me explain:
With android:configChanges="orientation" you tell Android that you will be responsible of the changes of orientation.
android:screenOrientation="portrait" you set the defa...
App Inventor 2 手势识别扩展教程 - GestureDetector · App Inventor 2 中文网
...直接使用。
概述
App Inventor 2的Canvas和Screen只有基本的Touch/Dragged/Fling事件。手势识别扩展（GestureDetector）可以识别更丰富的手势：
手势
内置支持
扩展支持
单击
✅ Tou...
App Inventor 2 PopupMenu与列表选择器自定义教程 · App Inventor 2 中文网
... ListPicker方案
基本用法
when Screen1.Initialize {
列表选择器1.Elements = ["选项一", "选项二", "选项三", "选项四"]
}
when 列表选择器1.BeforePicking {
// 动态设置选项
var 动态列表 = 微数据库1.GetValue("menu_items"...
How do I disable the “Press ENTER or type command to continue” prompt in Vim?
...
Unfortunately not very helpful for me, it messes up the screen and I have to press Ctrl-L... which is even more annoying than pressing space.
– Johan Kotlinski
May 20 '09 at 23:59
...
Dilemma: when to use Fragments vs Activities:
I know that Activities are designed to represent a single screen of my application, while Fragments are designed to be reusable UI layouts with logic embedded inside of them.
...
Android: How to stretch an image to the screen width while maintaining aspect ratio?
...e, but which is always roughly square) and display it so that it fills the screen horizontally, and stretches vertically to maintain the aspect ratio of the image, on any screen size. Here is my (non-working) code. It stretches the image horizontally, but not vertically, so it is squashed...
...
实时预览录制使用指导 · App Inventor 2 中文网
...幕时，将同名事件的处理合并到一个事件积木中。
when Screen1.Initialize() {
Screen1.AskForPermission("android.permission.CAMERA")
Screen1.AskForPermission("android.permission.RECORD_AUDIO")
}
when Screen1.PermissionGranted(权限名称) {
if 权限名称 == "android.permis...
How to get screen width without (minus) scrollbar?
...
Try this :
$('body, html').css('overflow', 'hidden');
var screenWidth1 = $(window).width();
$('body, html').css('overflow', 'visible');
var screenWidth2 = $(window).width();
alert(screenWidth1); // Gives the screenwith without scrollbar
alert(screenWidth2); // Gives the screenwith i...
How to simulate the environment cron executes a script with?
...n front of your cron job, e.g.
* * * * * . ~/.profile; your_command
Use screen
Above two solutions still fail in that they provide an environment connected to a running X session, with access to dbus etc. For example, on Ubuntu, nmcli (Network Manager) will work in above two approaches, but stil...