拍摄UIImageView的屏幕截图

Question

我想在我的视图中拍摄特定部分的屏幕截图（具体来说是一个imageview），有没有机会......

Answer 1

您似乎需要renderInContext。

// Size of the result rendered image
CGSize targetImageSize = CGSizeMake(100, 100);
// Check for retina image rendering option
if (NULL != UIGraphicsBeginImageContextWithOptions) UIGraphicsBeginImageContextWithOptions(targetImageSize, NO, 0);
else UIGraphicsBeginImageContext(targetImageSize);

CGContextRef context = UIGraphicsGetCurrentContext();
// The view to be rendered
[[yourImageView layer] renderInContext:context];
// Get the rendered image
UIImage *original_image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();