如何拍攝圓形截圖？

Question

我已經看到了很多關於截圖的問題和答案，我知道該怎麼做，這不是我的問題，這是我的代碼：

- (void)takeScreenShot 
{ 
    //UIGraphicsBeginImageContextWithOptions(CGSizeMake(320, 340), YES, 0.); 
    UIGraphicsBeginImageContext(CGSizeMake(320, 480)); 
    [self.view.window.layer renderInContext:UIGraphicsGetCurrentContext()]; 
    UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext(); 
    UIGraphicsEndImageContext(); 
} 

怎麼可能把一個圓截屏而不是隻有320x480方框？

Answer 1

你可以試試這個：

- (UIImage *)takeRoundedScreenShot:(CGPoint)center 
{ 
    float cornerRadius = self.view.window.layer.cornerRadius; 
    CGAffineTransform savedTransform = self.view.window.transform; 

    UIGraphicsBeginImageContext(CGSizeMake(320, 320)); 
    self.view.window.layer.cornerRadius = 160; 
    self.view.window.clipsToBounds = YES; 
    self.view.window.transform = CGAffineTransformMakeTranslation(-(center.x-160), -(center.y-160)); 
    [self.view.window.layer renderInContext:UIGraphicsGetCurrentContext()]; 
    UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext(); 
    UIGraphicsEndImageContext(); 

    self.view.window.transform = savedTransform; 
    self.view.window.layer.cornerRadius = cornerRadius. 

    return viewImage; 
} 

Answer 2

我不認爲這是可能的，但你總是可以round the corners yourself？