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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...
Android: how to hide ActionBar on certain activities
I've developed a simple demo application with a splash screen a map and some regular screens.
16 Answers
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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...
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
[...
程序员之网络安全系列（六）：动态密码 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...，确保其能够继续使用，降低对应用的影响，但对于超出默认时间（共20分钟）的同步令牌，将无法继续使用或进行远程同步，必须返厂或送回服务器端另行处理。同样，对于基于时间同步的服务器，应较好地保护其系统时钟，...
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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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...
xtreme toolkit pro——CXTPReportControl控件教程 - C/C++ - 清泛网 - 专注C/C++及内核技术
...头显示提示tooltips
//m_wndReportCtrl.ShowHeader(TRUE);//显示头部(默认显示)
//m_wndReportCtrl.ShowHeaderRows(TRUE);//显示头行
//m_wndReportCtrl.ShowFooter(TRUE);//显示页脚footer,即界面下边，与header对应
//m_wndReportCtrl.ShowFooterRows(TRUE);//显示页脚行
//m_wn...