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通过 ulimit 改善系统性能 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...信息时文件大小超出了限制。在 Linux 系统下一个 block 的默认大小是 512 bytes。所以上面的 ulimit 的含义就是限制 shell 所能创建的文件最大值为 512 x 100 = 51200 bytes，小于 323669 bytes，所以创建文件失败，符合我们的期望。这个例子...
Android map v2 zoom to show all the markers
...ith an appropriate Runnable. This is exactly the reason why getting marker screen coordinates can't be done in onCreate - see stackoverflow.com/q/14429877/1820695 However you can use some methods even before layout has happened - eg. CameraUpdateFactory.newLatLngBounds() with 4 params.
...
Soft keyboard open and close listener in an activity in Android
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@tsig your +100 solution depends on specific screen. Failed on tablets and hdpi phones. I used correction as ten percent of device height. That means if view height is lower than screenHeight - 10% the keyboard is open. else keyboard is closed. Here is my contentViewTop...
iPhone - Get Position of UIView within entire UIWindow
...e device.
always have their origin in the top left corner of the unrotated screen.
are window coordinates: The coordinate system ist defined by the bounds of the window. The screen's and device coordinate systems are different and should not be mixed up with window coordinates.
...
View.setPadding accepts only in px, is there anyway to setPadding in dp?
...from the code, you can use the convertion: "The conversion of dip units to screen pixels is simple: pixels = dips * (density / 160)." (from http://developer.android.com/guide/practices/screens_support.html )
Edit: you can get the screen density: http://developer.android.com/reference/android/util/D...
How can I detect if a browser is blocking a popup?
...ss of browser company or version is to simply put a warning message on the screen, somewhere close to the control that will create a pop-up, that politely warns the user that the action requires a pop-up and to please enable them for the site.
I know it's not fancy or anything, but it can't get any...
How did Google manage to do this? Slide ActionBar in Android application
...u(Activity act) {
this.act = act;
}
//call this in your onCreate() for screen rotation
public void checkEnabled() {
if(menuShown)
this.show(false);
}
public void show() {
//get the height of the status bar
if(statusHeight == 0) {
Rect rectgle = new Rect();
Window ...
How do you save/store objects in SharedPreferences on Android?
...y knowledge I cannot store objects in onSavedInstanceState and b) when the screen rotates my object gets destroyed and recreated. Therefore, I am using your SharedPrefs approach so when the screen is rotated my object does not lose it's values. (cont..)
– Frank Zappa
...
When to use IMG vs. CSS background-image?
...the meaning of the image can be communicated in all user-agents, including screen readers.
Pragmatic uses of IMG
Use IMG plus alt attribute if the image
is part of the content such as a logo or diagram or person (real person, not stock photo people).
—sanchothefat
Use IMG if you rely on bro...
What is the difference between cout, cerr, clog of iostream header in c++? When to use which one?
... redirects output to a file, information messages are still printed on the screen and not to the output file.
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