iPhone/iPad全屏截图与区域截图的几种方法

截取本区域(self.view):

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UIGraphicsBeginImageContext (CGSizeMake (self.view.frame.size.width, self.view.frame.size.height ) );
[self.view.layer renderInContext :UIGraphicsGetCurrentContext ( ) ];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext ( );
UIGraphicsEndImageContext ( );
UIImageWriteToSavedPhotosAlbum (viewImage, nil, nil, nil );

全屏截图:

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以上2种方法真机和模拟器都可以运行.在photo.app里可以看到照片

苹果最新开放的接口函数(全屏截图),已经有人试过了,不会reject:

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CGImageRef UIGetScreenImage ( );
CGImageRef img = UIGetScreenImage ( );
UIImage * scImage = [UIImage imageWithCGImage :img ];
UIImageWriteToSavedPhotosAlbum (scImage, nil, nil, nil );
It still works,but only on -device (not in simulator ) .

截图另存为指定名字:

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UIWindow *screenWindow = [ [UIApplication sharedApplication ] keyWindow ];

UIGraphicsBeginImageContext (screenWindow.frame.size );
[screenWindow.layer renderInContext :UIGraphicsGetCurrentContext ( ) ];
UIImage *screenshot = UIGraphicsGetImageFromCurrentImageContext ( );
UIGraphicsEndImageContext ( );

NSData *screenshotPNG = UIImagePNGRepresentation (screenshot );

NSArray *paths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES );
NSString *documentsDirectory = [paths objectAtIndex : 0 ];

NSError *error = nil;
[screenshotPNG writeToFile : [documentsDirectory stringByAppendingPathComponent : @ "screenshot.png" ] options :NSAtomicWrite error :&error ];

部分代码来自:http://stackoverflow.com/questions/692464/emailing-full-screen-of-iphone-app

没有ipad真机截图发布app的可以用此方法做个透明按钮点,哈哈.
截取本区域(self.view):

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5

全屏截图:

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6

以上2种方法真机和模拟器都可以运行.在photo.app里可以看到照片

苹果最新开放的接口函数(全屏截图),已经有人试过了,不会reject:

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截图另存为指定名字:

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原文链接：https://blog.csdn.net/slinloss/article/details/7967043