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Is quitting an application frowned upon?
... BACK button does not "kill the app". It finishes the activity that was on-screen when the user pressed the BACK button.
It should only terminate when the
users want to terminate it - never
ever any other way. If you can't write
apps that behave like that in Android,
then I think that Android can't...
HTML5 Canvas vs. SVG vs. div
...as far more room for optimizations, too (ie, excluding things that are off-screen is very easy).
Conclusion:
SVG is probably better for applications and apps with few items (less than 1000? Depends really)
Canvas is better for thousands of objects and careful manipulation, but a lot more code (or...
Detect all Firefox versions in JS
...ozIndexedDB !== "undefined" &&
typeof document.mozFullScreenEnabled === "undefined") {
firefoxVersion = "9";
}
// Firefox 10 released January 31, 2012
// mozFullScreenEnabled reports if full-screen mode is available
else if (typ...
Is AsyncTask really conceptually flawed or am I just missing something?
...downloads something off the internet. Using this approach, if you flip the screen 3 times while the task is running, it will be restarted with every screen rotation, and every task except the last throws its result away because its activity reference is null.
– Matthias
...
Place cursor at the end of text in EditText
...e. I was using EditText on a Dialog and pre-populating text from the main screen. When that happens the cursor was staying at the beginning and not at the end but after I tried your suggestion everything is just fine, the way I wanted. Thank you for posting this.
– Vincy
...
Android phone orientation overview including compass
...
You might want to check out the One Screen Turn Deserves Another article. It explains why you need the rotation matrix.
In a nutshell, the phone's sensors always use the same coordinate system, even when the device is rotated.
In applications that are not l...
App Inventor 2 数学代码块 · App Inventor 2 中文网
...数字，例如 0xd4（等于十进制 212）
进制数字块 ( 0 )
默认表示 10 进制的数字，单击“0”将允许更改数字。点击下拉菜单可以切换 二进制、八进制、十进制、十六进制 数字。
例如，这三个块是等效的：
下拉列表支持：十...
Interfaces — What's the point?
...very easy to visualise a use of this)
Say you are making a simple game on screen and It will have creatures with which you interact.
A: They can make your code easier to maintain in the future by introducing a loose coupling between your front end and your back end implementation.
You could wri...
Regex: Remove lines containing “help”, etc
...
Update
To clarify it, the normal behavior will be printing the lines on screen. To pipe it to a file, the > can be used. Thus, in this command:
grep -v help filename > newFileName
grep calls the grep program, obviously
-v is a flag to inverse the output. By defaulf, grep prints the line...
iOS - forward all touches through a view
...views. I am only using the overaly to detect some number of touches on the screen, but other than that I don't want the view to stop the behavior of other views underneath, which are scrollviews, etc. How can I forward all the touches through this overlay view? It is a subcalss of UIView.
...