iOS 5 编程(1)-图像视图、滑块和步进控件的使用(源码下载)
下面的范例App演示了如下控件的使用,通过滑块、步进控件和按钮来控制在图像视图中播放动画。
- 图像视图(UIImageView)
- 滑块(UISlider)
- 步进控件(UIStpper)
范例App的运行效果,如下图所示:
在图像视图中实现动画效果的部分代码:
- (IBAction)toggleAnimation:(id)sender {
if(bunnyView1.isAnimating){
[self.bunnyView1 stopAnimating];
[self.bunnyView2 stopAnimating];
[self.bunnyView3 stopAnimating];
[self.bunnyView4 stopAnimating];
[self.bunnyView5 stopAnimating];
[self.toggleButton setTitle:@"跳跃吧!" forState:UIControlStateNormal];
}
else{
[self.bunnyView1 startAnimating];
[self.bunnyView2 startAnimating];
[self.bunnyView3 startAnimating];
[self.bunnyView4 startAnimating];
[self.bunnyView5 startAnimating];
[self.toggleButton setTitle:@"停 止" forState:UIControlStateNormal];
}
}