保存图片到本地相册

-(void)tapSaveBGView
{
NSLog(@"保存到本地相册");

UIImageWriteToSavedPhotosAlbum(_customQRView.qRImg.image, self, @selector(imageSavedToPhotosAlbum:didFinishSavingWithError:contextInfo:), nil);
}

- (void)imageSavedToPhotosAlbum:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo
{
NSString *message = @"提示";
if (!error) {
message = @"成功保存到相册";
}else
{
message = [error description];
}
NSLog(@"message is %@",message);

[self presentMessageTips:message];
}

用 UIImageWriteToSavedPhotosAlbum(imageSave, nil, nil, nil), imageSave是UIImage类型，这样就保存进去了。

 

而且注意图片不宜过大，以免程序崩

下面是高清版

UIGraphicsBeginImageContextWithOptions(_customQRView.bounds.size, _customQRView.opaque,0.0);
[_customQRView.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage * img = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

UIImageWriteToSavedPhotosAlbum(img, self, @selector(imageSavedToPhotosAlbum:didFinishSavingWithError:contextInfo:), nil);