Iphone UIWebView，启用触摸屏保存图像，如在mobile Safari中

我想在用户触摸在我的应用程序的UIWebView中保存图像时启用保存图像和复制。是否有一个属性可以实现这一点，或者我需要编写一些特殊的方法来实现这一点

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谢谢你的阅读

首先，您可以创建UILongPressGestureRecognitor实例并将其附加到按钮

 UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPress:)];
 [self.button addGestureRecognizer:longPress];
 [longPress release];

然后实现处理手势的方法

 - (void)longPress:(UILongPressGestureRecognizer*)gesture {
if ( gesture.state == UIGestureRecognizerStateEnded ) {
     NSLog(@"Long Press");

 //do something
   }
 }

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查看此链接，谢谢！但是如何使UIWebView中按下的图像成为一个按钮呢？就像你可以把一个webview Constome按钮放在上面，然后你可以得到UIButton事件…：）

UIImage * downloadImage = [[UIImage alloc] initWithContentsOfFile:path];
    UIImageWriteToSavedPhotosAlbum(downloadImage,nil, nil, nil);
    [downloadImage release];

    UIAlertView * alert = [[UIAlertView alloc] initWithTitle:@"Saved" message:@"Wallpaper saved to your Gallery." delegate:nil cancelButtonTitle:@"Dismiss" otherButtonTitles:nil, nil];

    [alert show];
    [alert release];

Add this whole code to your long press method, it will save your image in gallery.