iPhone/iPad全屏截图与区域截图的几种方法

截取本区域(self.view):

1 2 3 4 5

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:

1 2 3 4 5 6

UIWindow *screenWindow = [[UIApplication sharedApplication] keyWindow];     UIGraphicsBeginImageContext(screenWindow.frame.size);     [screenWindow.layer renderInContext:UIGraphicsGetCurrentContext()];     UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();     UIGraphicsEndImageContext();     UIImageWriteToSavedPhotosAlbum(viewImage, nil, nil, nil);

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:

1 2 3 4 5

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:

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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];