如何從縮放圖像中的UITapGestureRecognizer獲取UIImage的坐標？

Question

我有一個UIScrollView，里面有一個帶圖像的UIImageView。 我希望能夠縮放並仍然能夠獲得UIImage的坐標。 我的圖像的坐標大於iPhone屏幕600x800，並且使用當前的方法，我只獲得iPhone屏幕上的坐標。 如何獲取已被點擊的UIImage上實際位置的坐標？

這是我到目前為止所得到的：

- (void) loadView {

UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapDetected:)];
tapGesture.numberOfTapsRequired = 1;
tapGesture.numberOfTouchesRequired = 1;


UIImage *mapImage = [UIImage imageNamed:@"Map1.png"];
imageV = [[UIImageView alloc] initWithImage:mapImage];
//imageV.userInteractionEnabled = YES;

//[imageV addGestureRecognizer:tapGesture];

//CGRect appFrame = [[UIScreen mainScreen] applicationFrame];
scrollV = [[UIScrollView alloc] initWithFrame:imageV.frame];
scrollV.contentSize = CGSizeMake(imageV.frame.size.width, imageV.frame.size.height);

[scrollV addGestureRecognizer:tapGesture];

[scrollV addSubview:imageV];
scrollV.userInteractionEnabled = YES;
scrollV.maximumZoomScale = 5;
scrollV.minimumZoomScale = 0.5;
scrollV.bounces = NO;
scrollV.bouncesZoom = NO;
scrollV.delegate = self;

self.view = scrollV;

}



-(void)tapDetected:(UIGestureRecognizer*)recognizer{
NSLog(@"tap detected.");
CGPoint point = [recognizer locationInView:nil];

NSLog(@"x = %f y = %f", point.x, point.y );
}

-(UIView*) viewForZoomingInScrollView:(UIScrollView *)scrollView {
return [[self.view subviews] objectAtIndex:0];
}

Answer 1

我只是想通了uitapgesture識別器應該添加到UIImageView中，當調用方法tapDetected時，獲取位置的正確方法是給它正確的視圖，如下所示

CGPoint point = [recognizer locationInView:self.imageV];

然后可以從圖像中獲得協調。