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What's the difference between the various methods to get a Context?
...could possibly be destroyed many times as the activity is destroyed during screen orientation changes and such.
I couldn't find really anything about when to use getBaseContext() other than a post from Dianne Hackborn, one of the Google engineers working on the Android SDK:
Don't use getBaseCon...
Faster way to develop and test print stylesheets (avoid print preview every time)?
...ck ⋮ (vertical ellipsis)
Choose Rendering
Tick Emulate print media
See screenshot below:
UPDATE 28/06/2016
Google Developers Docs around Chrome DevTools and the "Emulate Media" option have been updated for Chrome >51:
https://developers.google.com/web/tools/chrome-devtools/settings?hl=en...
Why do we need a fieldset tag?
... whole. This is especially important where assistive technology (such as a screen reader) is being used where the association of the controls and their legend cannot be implied by visual presentation.
share
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Need to remove href values when printing in Chrome
...text/css" />
just change it into the following style by adding media="screen"
<link href="~/Content/common/bootstrap.css" rel="stylesheet" **media="screen"** type="text/css" />
<link href="~/Content/common/bootstrap.min.css" rel="stylesheet" **media="screen"** type="text/css" />
&l...
php中json_decode()和json_encode()的使用方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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说明：
mixed json_decode ( string $json [, bool $assoc ] )
接受一个 JSON 格式的字符串并且把它转换为 PHP 变量
参数：
json
待解码的 json string 格式的字符串。
assoc
当该参数为 TRUE 时，将返回 array 而非 object 。
返回值：
Retu...
How do I set the size of Emacs' window?
I'm trying to detect the size of the screen I'm starting emacs on, and adjust the size and position the window it is starting in (I guess that's the frame in emacs-speak) accordingly. I'm trying to set up my .emacs so that I always get a "reasonably-big" window with it's top-left corner near the top...
What's the difference between fill_parent and wrap_content?
... level layout or control to fill_parent will force it to take up the whole screen.
wrap_content
Setting a View's size to wrap_content will force it to expand only far enough to contain the values (or child controls) it contains. For controls -- like text boxes (TextView) or images (ImageView) -- t...
Difference between SurfaceView and View?
... VSYNC is to consider it is as a timer that fire up every 16ms for a 60fps screen. In Android, all the normal view update (and display actually but I won't talk it today), is synchronized with VSYNC to achieve better smoothness. Now,back to the surfaceView, you can render it anytime as you wish. How...
How to programmatically get iOS status bar height
...work connection) at the top of the iPhone/iPad is 20 pixels for non-retina screens and 40 pixels for retina screens, but to future proof my app I would like to be able to determine this without hard coding values. Is it possible to figure out the height of the status bar programmatically?
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Formula px to dp, dp to px android
...owever, the docs explain that this value is a rounded value, used with the screen 'buckets'. Eg. on my Nexus 10 it returns 2, where the real value would be 298dpi (real) / 160dpi (default) = 1.8625.
Depending on your requirements, you might need the exact transformation, which can be achieved like...