在iPhone应用程序中保存视图作为照片

Question

有没有一种简单的方法可以通过编程将视图保存到iPhone应用程序中的照片库？

Answer 1

我将这些方法添加到我的视图的控制器类。他们保存照片，然后弹出一个警告框告诉用户它是否成功。

- (void)savePhotoOfView:(UIView *)view 
{ 
    UIGraphicsBeginImageContext(view.bounds.size); 
    [view drawRect:view.bounds]; 
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext(); 
    UIGraphicsEndImageContext(); 

    UIImageWriteToSavedPhotosAlbum(image, 
            self, 
            @selector(savedPhotoImage:didFinishSavingWithError:contextInfo:), 
            NULL); 
} 

- (void) savedPhotoImage:(UIImage *)image 
    didFinishSavingWithError:(NSError *)error 
       contextInfo:(void *)contextInfo 
{  
    NSString *message = @"This image has been saved to your Photos album"; 
    if (error) { 
     message = [error localizedDescription]; 
    } 
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil 
                message:message 
                delegate:nil 
              cancelButtonTitle:@"OK" 
              otherButtonTitles:nil]; 
    [alert show]; 
    [alert release]; 
}