我已经设置了一个UIActionSheet弹出只有两个按钮,并为其中的一个分配了一个动作。该应用程序编译和运行和正常工作,但我得到警告:UIActionSheetDelegate警告视图控制器
warning: class 'MyViewController' does not implement the 'UIActionSheetDelegate' protocol
这里是我的动作片代码:
- (IBAction)saveImage {
UIActionSheet *saveMenu = [[UIActionSheet alloc] initWithTitle:@"Save Image to Photo Library"
delegate:self
cancelButtonTitle:@"Dismiss"
destructiveButtonTitle:nil
otherButtonTitles:@"Save Image", nil];
[saveMenu showInView:self.view];
[saveMenu release];
我对“保存图像”签署按钮的动作:
-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex == 0) {
UIImage* imageToSave = [imageView image]; // alternatively, imageView.image
//Save it to the camera roll/saved photo album
UIImageWriteToSavedPhotosAlbum(imageToSave, nil, nil, nil);
}
}
我应该忽略此构建警告吗?或者我该如何纠正警告?