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实现一个简单的服务端推方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...如下所示：
Polling
因为服务端不会主动告诉客户端它是否有新数据，所以Polling的实时性较差。虽然可以通过加快轮询频率的方式来缓解这个问题，但相应付出的代价也不小：一来会使负载居高不下，二来也会让带宽捉襟见...
Programmatically selecting text in an input field on iOS devices (mobile Safari)
...ou programmatically select the text of an input field on iOS devices, e.g. iPhone, iPad running mobile Safari?
10 Answers
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How to write iOS app purely in C
... can be entirely, pure C code)
Is this true?
Could I build an iPhone app purely in the C programming language?
The quoted passage is true, but the answer to your question is no.
To illustrate what answerer Mecki on that other question was talking about:
- (void) drawRect:(CGRect)dir...
How do I wrap text in a UITableViewCell without a custom cell
This is on iPhone 0S 2.0. Answers for 2.1 are fine too, though I am unaware of any differences regarding tables.
10 Answers...
Build an iOS app without owning a mac? [closed]
...p by step few years back I was in same situation.
So We have two Phases
iPhone/iPad (iOS) app development
iPhone/iPad (iOS) app development and Publish to iTunes Store
1. iPhone/iPad (iOS) app development
So If you just want to develop iOS apps you don't want to pay anything,
You just need Ma...
What's the best way to develop a sideswipe menu like the one in Facebook's new iOS app?
...a more common interface element as more information gets crammed into each iPhone app. Facebook has included it in their latest version and the new Gmail app appears to include it as well . I was wondering if anybody had thoughts on the most efficient way of developing something like this as it's...
How to programmatically get iOS status bar height
...tus bar (with the time, battery, and network 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...
How can a web application send push notifications to iOS devices? [closed]
...web application to send push notifications to a mobile device, such as the iPhone, the mobile device must have registered to receive push notifications for a particular application. The registration for push notification is done through a native app and can only be performed through a native app. O...
How to build for armv6 and armv7 architectures with iOS 5
...g to use them, and linked iOS5-only libraries as Optional.
So, supporting iPhone3G in an iOS5 world could just as easily mean "we want our app to run on iOS4 and above (regardless of any iOS5 feature use)" rather than "we want to make sure our app runs on an older device running iOS5". There's a di...
What is the difference between max-device-width and max-width for mobile web?
I need to develop some html pages for iphone/android phones, but what is the difference between max-device-width and max-width ? I need to use different css for different screen size.
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