iphone - 删除 View 中的图像

Question

我似乎在删除 UIScrollView 中的图像时遇到了问题。我能够将其从 NSDocumentDirectory 中删除，但它仍保留在 View 中。如何在按下按钮时将其删除。这是我的代码:

- (IBAction)buttonClicked:(id)sender {
    UIButton *button = (UIButton *)sender;
    [_images objectAtIndex:button.tag];
    [_images removeObjectAtIndex:button.tag];

    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *fullPath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%d.png", button.tag]];
    [fileManager removeItemAtPath: fullPath error:NULL];

}

Answer 1

您需要像下面这样从 super View 中删除 View

//In your button clicked function
- (IBAction)buttonClicked:(id)sender {
    UIButton *button = (UIButton *)sender;
    [button removeFromSuperView];
}