UIButton的状态更改直到触摸结束后才发生。
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抱歉，如果这是一个基本问题，我找不到确切的答案。
我设置了4个按钮：
// Add the normal and selected state for each button
UIImage *buttonImage = [UIImage imageNamed:[NSString stringWithFormat:@\"HotspotNumber2-%i.png\",(hotspotID +1)]];
[hotspotButton setImage:buttonImage forState:UIControlStateNormal];
UIImage *buttonImageSelected = [UIImage imageNamed:[NSString stringWithFormat:@\"HotspotNumber2-%is.png\",(hotspotID +1)]];
[hotspotButton setImage:buttonImageSelected forState:UIControlStateSelected];
[hotspotButton setImage:buttonImageSelected forState:UIControlStateHighlighted];
[hotspotButton addTarget:self action:@selector(hotspotTouch:) forControlEvents:UIControlEventTouchDown];
// Called when a hotspot is touched
-(void)hotspotTouch:(id)sender{
// Deselect the hotspot currently selected
if (selectedHotspot) [selectedHotspot setSelected:NO];
selectedHotspot = (UIButton *)sender;
[selectedHotspot setSelected:YES];
// Get dictionary of hot spot that is pressed
NSDictionary *hotspot = [hotspots objectAtIndex:[selectedHotspot tag]];
NSString *imageFileName = [hotspot objectForKey:ksHotspotItemKey];
if ([imageFileName length] > 0) currentImageView.image = [UIImage imageNamed:imageFileName];
}
}
没有找到相关结果
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锹缄
// Called when a hotspot is touched down -(void)hotspotTouchDown:(id)sender{ // Deselect the hotspot currently selected if it exists if (selectedHotspot) [selectedHotspot setSelected:NO]; // Get dictionary of hot spot that is pressed NSDictionary *hotspot = [hotspots objectAtIndex:[sender tag]]; // If the class of the hotspot is \'self\' then replace the current image with a new one given in the hotspot data if ([[hotspot objectForKey:ksHotspotClassKey] isEqualToString:ksHotspotClassSelf]) { NSString *imageFileName = [hotspot objectForKey:ksHotspotItemKey]; if ([imageFileName length] > 0) currentImageView.image = [UIImage imageNamed:imageFileName]; } } // Called when a hotspot is touched up -(void)hotspotTouchUp:(id)sender{ // Set the selected property of the button selectedHotspot = (UIButton *)sender; [selectedHotspot setSelected:YES]; }