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How to increment a NSNumber
...anyone who is using the latest version of Xcode (writing this as of 4.4.1, SDK 5.1), with the use of object literals, you can clean the code up even a little bit more...
NSNumber *x = @(1);
x = @([x intValue] + 1);
// x = 2
Still kind of a pain to deal with the boxing and unboxing everything to d...
How to show the loading indicator in the top status bar
...hen they are accessing the network. Is there a way to do the same thing in SDK apps, or is this an Apple only thing?
8 Answ...
Pulse Secure解决方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...管理这些 PC。完整的接入控制解决方案必须不受公司 PC 版本或预装软件的影响，同时必须能够提供跨平台支持。此外，您还必须考虑到分支办事处的用户形态有时与园区局域网一样复杂──员工、承包商和访客──他们需要
与...
How to check if current thread is not main thread
... the solutions, I think that's the best one:
boolean isUiThread = VERSION.SDK_INT >= VERSION_CODES.M
? Looper.getMainLooper().isCurrentThread()
: Thread.currentThread() == Looper.getMainLooper().getThread();
And, if you wish to run something on the UI thread, you can use this:
new Ha...
Unable to locate tools.jar
...
Install the Java SDK.
Add a System Environment Variable called JAVA_HOME with the value of JDK location.
Go to Control Panel\System and Security\System. Advanced System Settings, Environment Variables, System Variables, New... Example:
Vari...
An established connection was aborted by the software in your host machine
...ckout there might be two instances of Eclipse are pointing to same Android SDK...just keep one instance of Eclipse and try again...that's why you are getting Exception as "established connection was aborted by the software in your host machine"...go in details of android adb(Android Debug Bridge) yo...
Redis 的性能幻想与残酷现实 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...验室环境的测试结果接近，而目前生产环境使用的 Redis 版本已升级到 2.8 了。如果业务量峰值继续增高，看起来单个 Redis 分片还有大约 20% 的余量就到单实例极限了。那么可行的办法就是继续增加分片的数量来分摊单个分片的压...
不同品牌的防火墙组成高可靠性集群 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...他一些 Unix 变体操作系统上。Zebra 是那些系统最新的发行版本中的路由软件。最新版本的 Zebra 以及文档可以从 GNU Zebra 网站上下载：http://www.zebra.org/ Zebra ;的设计独特，采用模块的方法来管理协议。可以根据网络需要启用或者禁...
How to hide status bar in Android
...
if (Build.VERSION.SDK_INT < 16) {
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
} else {
View decorView = getWindow().getDecorView();
int uiOptions = View.SYSTEM...
界面布局组件 · App Inventor 2 中文网
...望组件一个一个地显示，请使用 垂直滚动条布局。
这个版本是可滚动的。
属性
水平对齐
一个数字，用于表示水平滚动条布局的内容如何水平对齐。选择分别是：
1 （左对齐）
2 （右对齐）
3 （水平居中）
...