contentOffset を使用して、タップされた画像オブジェクトを検出して保存しようとしていますが、代わりに常に最後の imageObject を保存します。
scrollViewでタップされた画像ビューのcontentOffsetを計算しようとする方法は次のとおりです。
(void)viewDidLoad
{
UIScrollView *imageScrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];
imageScrollView.delegate = self;
imageScrollView.pagingEnabled = YES;
for (int i = 0; i < 61; i++) {
CGFloat xOrigin = i * 320;
UIButton *myButton = [UIButton buttonWithType:UIButtonTypeCustom];
[myButton addTarget:self action:@selector(dismissView:) forControlEvents:UIControlEventTouchUpInside];
myButton.frame = CGRectMake(xOrigin, 10, 60, 35);
[myButton.layer setMasksToBounds:YES];
[myButton.layer setCornerRadius:10.0f];
myButton.layer.borderWidth = 2;
myButton.layer.borderColor = [[UIColor whiteColor] CGColor];
[myButton setTitle:@"Done" forState:UIControlStateNormal];
myButton.backgroundColor = [UIColor clearColor];
NSString *imageName = [NSString stringWithFormat:@"image%d.png", i];
UIImage *image = [UIImage imageNamed:imageName];
_imageView = [[[UIImageView alloc] initWithImage:image]autorelease];
_imageView.frame = CGRectMake(xOrigin, 0, 320, 480);
_imageView.tag = i;
[_imageScrollView viewWithTag:i+1];
UILongPressGestureRecognizer *gestureRecognizer = [[UILongPressGestureRecognizer alloc]
initWithTarget:self
action:@selector(handleLongPress:)];
imageScrollView.userInteractionEnabled = YES;
[imageScrollView addGestureRecognizer:gestureRecognizer];
gestureRecognizer.delegate = self;
[gestureRecognizer release];
[imageScrollView addSubview:_imageView];
[imageScrollView addSubview:myButton];
}
imageScrollView.contentSize = CGSizeMake(320 * 61 , 480);
[self.view addSubview:imageScrollView];
}
- (void)handleLongPress:(UILongPressGestureRecognizer*)gestureRecognizer{
if (gestureRecognizer.state == UIGestureRecognizerStateBegan){
UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"Save Photo", nil];
actionSheet.actionSheetStyle = UIActionSheetStyleBlackTranslucent;
[actionSheet showInView:self.view];
[actionSheet release];
}}
-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
switch (buttonIndex) {
case 0:
[self performSelector:@selector(LongPress:) withObject:nil];
break;
default:
break;
}}
- (void)LongPress:(UILongPressGestureRecognizer*)gestureRecognizer{
CGPoint offset = _imageScrollView.contentOffset;
int imageView = floor((Offset.x - imageView / 320) / imageView) + 1;
UIImage* image = [(UIImageView*)[_imageScrollView viewWithTag:imageView] image];
UIImageWriteToSavedPhotosAlbum(image, self, @selector(image: didFinishSavingWithError:contextInfo:), nil);
}
このコードはタップされた画像を保存すると思っていましたが、代わりにスクロールビューから最後の画像ビューを保存します。
やり方が間違っている場合や、まだ何か不足している場合はお知らせください。助けてくれてありがとう。