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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...
iOS 7 style Blur view
...the Gaussian blur has to operate over, so an iPhone 4S can blur the entire screen in roughly 30 ms using this operation.
You still have the challenge of how to pull content into this blur from views behind this one in a performant manner.
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How do I run a node.js app as a background service?
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This might not be the accepted way, but I do it with screen, especially while in development because I can bring it back up and fool with it if necessary.
screen
node myserver.js
>>CTRL-A then hit D
The screen will detach and survive you logging off. Then you can get i...
How do you create a transparent demo screen for an Android app?
I'm trying to create a semi-transparent demo screen that is launched only when a user first installs my application. Here's an example from the Pulse News app:
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Capture screenshot of active window?
I am making a screen capturing application and everything is going fine. All I need to do is capture the active window and take a screenshot of this active window. Does anyone know how I can do this?
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Background image jumps when address bar hides iOS/Android/Mobile Chrome
...ll down. This is because it is keeping the background sized to 100% of the screen height minus the URL bar. If we add 60px to the height, as swiss suggests, this problem goes away. It does mean we don't get to see the bottom 60px of the background image when the URL bar is present, but it prevents u...
How can I get screen resolution in java?
How can one get the screen resolution (width x height) in pixels?
10 Answers
10
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Getting ssh to execute a command in the background on target machine
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If you don't/can't keep the connection open you could use screen, if you have the rights to install it.
user@localhost $ screen -t remote-command
user@localhost $ ssh user@target # now inside of a screen session
user@remotehost $ cd /some/directory; program-to-execute &
To de...
Determine if the device is a smartphone or tablet? [duplicate]
... means "smallest width 600". If the size of the smallest dimension of the screen is greater than or equal to 600dp, the value in that folder will be chosen. A good reference for values and layout buckets (folders) is here: android-developers.blogspot.com/2012/07/….
– javahe...
Prevent screen rotation on Android
...would like to prevent from rotating because I'm starting an AsyncTask, and screen rotation makes it restart.
15 Answers
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