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24种设计模式与7大原则 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...原则创建型模式抽象工厂模式(Abstract factory pattern): 提供一个接口, 用于创建相关或依赖对象的家族, 而不需要指定具体类.生成器模式(B...创建型模式
抽象工厂模式(Abstract factory pattern): 提供一个接口, 用于创建相关或依赖对象的...
Full Screen DialogFragment in Android
I'm trying to show an almost fullscreen DialogFragment. But I'm somehow not able to do so.
27 Answers
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Fastest method of screen capturing on Windows
I want to write a screencasting program for the Windows platform, but am unsure of how to capture the screen. The only method I'm aware of is to use GDI, but I'm curious whether there are other ways to go about this, and, if there are, which incurs the least overhead? Speed is a priority.
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What is the difference among col-lg-*, col-md-* and col-sm-* in Bootstrap?
... pixels)
The smaller tier (xs, sm or md) also defines the size for larger screen widths. So, for the same size column on all tiers, just set the width for the smallest viewport...
<div class="col-lg-3 col-md-3 col-sm-3">..</div> is the same as,
<div class="col-sm-3">..</div>...
About Android image and asset sizes
...
kcoppock did a great job explaining Andorid screen densities.
I just would like to add one more point regarding the original question.
Android Tablet launcher icon uses one density bucket up.
According to Google's developer Nick Butcher's Google+ post
The gorgeo...
How do I prevent the iPhone screen from dimming or turning off while my application is running?
...re you call this. It is always the entire app hit and each view is kept on screen, not dimmed.
– decades
Nov 19 '18 at 21:39
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show 1 more c...
Android on-screen keyboard auto popping up
One of my apps has an "opening screen" (basically a menu) that has an EditText followed by several Button s. The problem is that several of my users are reporting that when they open the app it's automatically popping up the on-screen keyboard without them even touching the EditText . As far as ...
Boost.Asio的简单使用(Timer,Thread,Io_service类) - C/C++ - 清泛网 - 专注C/C++及内核技术
...include <boost/date_time/posix_time/posix_time.hpp>
使用asio至少需要一个boost::asio::io_service对象.该类提供了访问I/O的功能.我们首先在main函数中声明它.
int main()
{
boost::asio::io_service io;
下一步我们声明boost::asio::deadline_timer对象.这个asio...
How do I prevent Android taking a screenshot when my app goes to the background?
... building has the requirement that the app has to prevent the OS to take a screenshot of the app when it's being pushed into the background for security reasons. This way it won't be able to see the last active screen when switching between apps.
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Android, canvas: How do I clear (delete contents of) a canvas (= bitmaps), living in a surfaceView?
...nt to clear your Canvas with.
And: how can I update just a part of the screen ?
There is no such method that just update a "part of the screen" since Android OS is redrawing every pixel when updating the screen. But, when you're not clearing old drawings on your Canvas, the old drawings are st...