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// 1.截图 UIImage *image = [UIImage captureWithView:self.paintView]; // 2.保存到图片 UIImageWriteToSavedPhotosAlbum(image, self, @selector(image:didFinishSavingWithError:contextInfo:), nil); /** 保存图片操作之后就会调用 */ - (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo { if (error) { // 保存失败 [MBProgressHUD showError:@"保存失败"]; } else { // 保存成功 [MBProgressHUD showSuccess:@"保存成功"]; } }
+ (instancetype)captureWithView:(UIView *)view { // 1.开启上下文 UIGraphicsBeginImageContextWithOptions(view.frame.size, NO, 0.0); // 2.将控制器view的layer渲染到上下文 [view.layer renderInContext:UIGraphicsGetCurrentContext()]; // 3.取出图片 UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext(); // 4.结束上下文 UIGraphicsEndImageContext(); return newImage; }
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原文地址:http://www.cnblogs.com/yinshenge/p/4560486.html