我已经为“滑块解锁”元素创建了一个 UISlider。我写的动画只指向一个滑块时效果很好。但我需要使用 for 循环来动态创建滑块。当我创建滑块为滑块添加标签并将动画功能添加到 for 循环中的滑块时,动画不起作用,如下所示:
for (int i = 0; i < rowCount; i++){
...
UISlider *slider=[[UISlider alloc] initWithFrame:CGRectMake(5+ xInc, 25+yInc, 322, 40)];
//give a id tag to the slider
[slider setTag:i*10];
//set a action to the slider
[slider addTarget:self action:@selector(UnlocklinkSlider:) forControlEvents:UIControlEventTouchUpInside];
...
动画功能是:
- (void)UnlocklinkSlider:(UISlider*)slider
{
for (int i = 0; i < rownumber; i++){
UIImageView *frontimg = (UIImageView *)[self.view viewWithTag:i*10+1];
...
if (slider.tag==i*10) {
if(slider.value >= 0.5){
// user did not slide far enough, so return back to 0 position
[UIView beginAnimations: @"SlideCanceled" context: nil];
[UIView setAnimationDelegate: self];
[UIView setAnimationDuration: 0.35];
// use CurveEaseOut to create "spring" effect
[UIView setAnimationCurve: UIViewAnimationCurveEaseOut];
...
[UIView commitAnimations];
...
}
else{
...
}
}
}
}
但是动画不能以这种方式工作。有人知道为什么吗?