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How to programmatically take a screenshot on Android?
How can I take a screenshot of a selected area of phone-screen not by any program but from code?
24 Answers
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Detecting touch screen devices with Javascript
...ay could be using CSS media queries and using some styles only for smaller screens / mobile devices, which are the ones most likely to have touch / tap functionality. So if you have some specific styles via CSS, and from jQuery you check those elements for the mobile device style properties you coul...
扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
...omponent is an item that the app can use. It could be visible on the phone screen such as a button or label, or it could be non-visible, such as a camera or a sensor. Each component has a set of blocks that the programmer can use to control its behavior.
Figure 1. Blocks for an App Inventor app t...
How do I get the real .height() of a overflow: hidden or overflow: scroll div?
...f the height of an element's content, including content not visible on the screen due to overflow. The scrollHeight value is equal to the minimum clientHeight the element would require in order to fit all the content in the viewpoint without using a vertical scrollbar. It includes the element paddin...
autolayout - make height of view relative to half superview height
...rivial problem example. I have a view that I want to sit at the top of the screen, and take up half of the screen-height. Simple before autolayout - just tack it in place and tell it to expand vertically when the superview resizes.
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How can I produce an effect similar to the iOS 7 blur view?
...icate this blurred background from Apple's publicly released iOS 7 example screen:
12 Answers
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App Inventor 2 SideBarV2 侧边栏拓展 · App Inventor 2 中文网
...。调用 Create 创建菜单，再用 Show 和 Hide 控制显示：
when Screen1.Initialize() {
SidebarV2_1.Create(
垂直布局_内容,
["首页", "消息", "设置"],
["home", "message", "settings"],
"sidebar_background.png")
}
when 按钮_菜单.Click() {
SidebarV2_1.Show()...
How do I get both STDOUT and STDERR to go to the terminal and a log file?
...
Use "tee" to redirect to a file and the screen. Depending on the shell you use, you first have to redirect stderr to stdout using
./a.out 2>&1 | tee output
or
./a.out |& tee output
In csh, there is a built-in command called "script" that will ca...
AI2 Keep Awake
...ck types: FULL_WAKE_LOCK: As long as this WakeLock is set, the screen and keyboard backlight are kept at full brightness, even if the app is no longer the foreground app. The CPU and WiFi remain active. Only when the user presses the power button and the device switches to standby ...
iOS 7 parallax effect in my view controller
I'm developing an app for iOS 7 in Objective-C. I've got a screen in my app with a few buttons and a pretty background image. (It's a simple xib with UIButtons on top of a UIImageView .)
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