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Difference between initLoader and restartLoader in LoaderManager
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We could always use restartLoader but that would be inefficient. After a screen rotation or if the user navigates away from the app and returns later to the same Activity we usually want to show the same query result and so the restartLoader would unnecessarily re-create the loader and dismiss the...
代码块超过1.2w编译apk报错问题 - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
...54021632-0/youngandroidproject/../build/classes/appinventor/ai_admin/AAC_3/Screen1.class at Lappinventor/ai_admin/AAC_3/Screen1;run(Lgnu/mapping/CallContext;)V:
[java] com.android.tools.r8.internal.Sb: Different stack heights at jump target: 0 != 1
[...
Window Features - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ts the painting of windows that called SetLayeredWindowAttributes into off-screen memory and recomposes it to achieve the desired effect.
For faster and more efficient animation or if per-pixel alpha is needed, call UpdateLayeredWindow.UpdateLayeredWindow should be used primarily when the applicati...
Specifying and saving a figure with exact size in pixels
...o show a figure of that size (matplotlib requires the figure to fit in the screen, if you ask for a size too large it will shrink to the screen size). Let's imagine you want an 800x800 pixel image just for an example. Here's how to show an 800x800 pixel image in my monitor (my_dpi=96):
plt.figure(f...
Alternate output format for psql
...ew for Postgresql 9.2; PSQL automatically fits records to the width of the screen. previously you only had expanded mode on or off and had to switch between the modes as necessary.
If the record can fit into the width of the screen; psql uses normal formatting.
If the record can not fit into the ...
Android activity life cycle - what are all these methods for?
...p
onRestart() --> onStart() --> onResume()
When any dialog open on screen
onPause()
After dismiss the dialog or back button from dialog
onResume()
Any phone is ringing and user in the app
onPause() --> onResume()
When user pressed phone's answer button
onPause()
After call end
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解决：CTreeCtrl控件SetCheck无效的问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
...我们往往想在初始化（OnInitDialog）中使用SetCheck()方法,将默认的值处于选中状态.但是向我们这些菜鸟往往会发现事与愿违,不管是怎么样就是得不到任何一个选项处于Check状态.
我用了多线程,有时会出现打勾,更多的时候是徒劳...
布局列表框循序渐进：从商品清单到购物车和网络分页 · App Inventor 2 中文网
...页
开始前的准备
新建一个 Screen1；屏幕“可滚动”设为假，“尺寸调整”设为响应式。列表本身负责滚动。
第 1–6、9 关使用同一个列表实例：布局列表框_商品，宽、高均为填充父级，方向纵向，...
is there a css hack for safari only NOT chrome?
...ification!)
And here is the code:
/* Safari 6.1-10.0 (not 10.1) */
@media screen and (min-color-index:0) and(-webkit-min-device-pixel-ratio:0)
{ @media {
.safari_only {
color:#0000FF;
background-color:#CCCCCC;
}
}}
For more 'version specific' Safari CSS, please contin...
twitter bootstrap navbar fixed top overlapping site
...ave stated adding a padding-top to body works great.
But when you make the screen narrower (to cell phone widths) there is a gap between the navbar and the body. Also, a crowded navbar can wrap to a multi-line bar, overwriting some of the content again.
This solved these kinds of issues for me
bod...