UISlider

@implementation ViewController

 

- (UIImage *) minimumTrackImage{　　　　　　　　　　　　// thumb左侧样式

    UIImage *result = [UIImage imageNamed:@"MinimumTrack"]; UIEdgeInsets edgeInsets;

    edgeInsets.left = 4.0f;

    edgeInsets.top = 0.0f;

    edgeInsets.right = 0.0f;

    edgeInsets.bottom = 0.0f;

    result = [result resizableImageWithCapInsets:edgeInsets]; return result;

}

 

- (UIImage *) maximumTrackImage{　　　　　　　　　　　　//thumb右侧样式

    UIImage *result = [UIImage imageNamed:@"MaximumTrack"];UIEdgeInsets edgeInsets;

    edgeInsets.left = 0.0f;

    edgeInsets.top = 0.0f;

    edgeInsets.right = 3.0f;

    edgeInsets.bottom = 0.0f;

    result = [result resizableImageWithCapInsets:edgeInsets]; return result;

}

- (void)sliderValueChanged: (UISlider *) paramSender {　　　　　　// slider值改变是调用的方法

    　　　　　　　　　　　　　　

    if ([paramSender isEqual:self.mySlider]) {

        NSLog(@"New value = %f", paramSender.value);

    }

}

 

- (void)viewDidLoad

{

    [superviewDidLoad];

    self.view.backgroundColor = [UIColorwhiteColor];

    self.mySlider = [[UISlideralloc] initWithFrame:CGRectMake(0.0f, 0.0f, 200.0f, 23.0f)];

    self.mySlider.center = self.view.center;

    self.mySlider.minimumValue = 0.0f;

    self.mySlider.maximumValue = 100.0f;

    self.mySlider.value = self.mySlider.maximumValue/2.0;　　　//当前slider的值

    [self.view addSubview:self.mySlider];

    [self.mySlideraddTarget:selfaction:@selector(sliderValueChanged:) forControlEvents:UIControlEventValueChanged];

　 self.mySlider.continuous = NO;　　　　　　　　　　　　　　　　　　//放开slider后给出改变后的值，默认情况下是YES

    [self.mySlider setThumbImage:[UIImageimageNamed:@"ThumbNormal.png"] forState:UIControlStateNormal]; //设置thumb的图案

    [self.mySlider setThumbImage:[UIImageimageNamed:@"ThumbNormal.png"] forState:UIControlStateHighlighted]; //点击thumb时变成此图案

    self.mySlider.minimumTrackTintColor = [UIColorredColor];

    self.mySlider.maximumTrackTintColor = [UIColorgreenColor];

    self.mySlider.thumbTintColor = [UIColorgrayColor];

 

    [self.mySlider setMinimumValueImage:[UIImageimageNamed:@"MinimumValue"]];      //设置slider左边的图案

    [self.mySlider setMinimumTrackImage:[self minimumTrackImage] forState:UIControlStateNormal];

    

    [self.mySlider setMaximumValueImage:[UIImageimageNamed:@"MaximumValue"]];

    [self.mySlider setMinimumTrackImage:[self maximumTrackImage] forState:UIControlStateNormal];

　　

}