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How to access a mobile's camera from a web app?
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In iPhone iOS6 and from Android ICS onwards, HTML5 has the following tag which allows you to take pictures from your device:
<input type="file" accept="image/*" capture="camera">
Capture can take values like camera, ca...
How to draw a custom UIView that is just a circle - iPhone app
How would I go about drawing a custom UIView that is literally just a ball (a 2D circle)? Would I just override the drawRect method? And can someone show me the code for drawing a blue circle?
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iPhone : How to detect the end of slider drag?
How to detect the event when the user has ended the drag of a slider pointer?
16 Answers
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Can I embed a custom font in an iPhone application?
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iOS 3.2 and later support this. Straight from the What's New in iPhone OS 3.2 doc:
Custom Font Support
Applications that want to use custom fonts can now include those fonts in their application bundle and register those fonts with the system by including the UIAppFonts key in their...
What format string do I use for milliseconds in date strings on iPhone?
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Symbolicating iPhone App Crash Reports
I'm looking to try and symbolicate my iPhone app's crash reports.
25 Answers
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Gradients on UIView and UILabels On iPhone [duplicate]
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I realize this is an older thread, but for future reference:
As of iPhone SDK 3.0, custom gradients can be implemented very easily, without subclassing or images, by using the new CAGradientLayer:
UIView *view = [[[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 100)] autorelease];
CAGr...
What is the best way to unit test Objective-C code?
...pps) with a simple (or
not) target setup; or easy to package
into your iPhone project."
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How to scroll to the bottom of a UITableView on the iPhone before the view appears
I have a UITableView that is populated with cells of a variable height. I would like the table to scroll to the bottom when the view is pushed into view.
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...长文，只讨论性能问题，不讨论那些UI，用户体验，或是是否把支付和购票下单环节分开的功能性的东西）
业务
任何技术都离不开业务需求，所以，要说明性能问题，首先还是想先说说业务问题。
其一，有人可能把这个东...