//初始化slider
UISlider *slider=[[UISlider alloc]initWithFrame:CGRectMake(60,100,200,30)];
slider.tag=101;//tag值
//设置最大值
slider.maximumValue=1;
//设置最小值
slider.minimumValue=0;
//设置默认值
slider.value=0.8f;
//设置值（带有动画）
//[slider setValue:.5 animated:YES];
//添加事件
[slider addTarget:self action:@selector(valueChange:) forControlEvents:(UIControlEventValueChanged)];
//把slider添加到视图上进行显示
[self.window addSubview:slider];
[slider release];//mrc下(arc下不需要手动释放)
//[NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(test:) userInfo:slider repeats:YES];
[self.window makeKeyAndVisible];returnYES;}
-(void)valueChange:(UISlider *)slider{
NSLog(@"slider value : %.2f",[slidervalue]);
}
//NSTimer(定时器)
-(void)test :(NSTimer *)timer{
UISlider *slider=timer.userInfo;
[slider setValue:0.5f animated:YES];
}
//此外slider还有两个属性
@property(nonatomic,retain) UIImage *minimumValueImage;
// default is nil. image that appears to left of control (e.g. speaker off)
@property(nonatomic,retain) UIImage *maximumValueImage;
