我想使用户能够从一个有关SOS装置的照片资料库中挑选一个照片(我假设使用UIImagePickerController是通往Pi/iPod Touch的一条途径),然后用一个冰层来收集选定的照片。 固定功能也是有的。
只要你不需要一度选择多个照片,UIImagePicker就是一个很好的选择。
I d use CoreGraphics for this. Here s some info: http://www.hive05.com/2008/11/crop-an-image-using-the-iphone-sdk/
核心学科也应当让你轮流担任。 摘录:
CGContextRotateCTM (bitmap, radians(90));
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我希望我与四舍五入的累进角进行网上讨论。
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