UISlider,UISwitch,UIStepper,UISegmentControl之间的联动及功能

#import "MainViewController.h"

#define kScreenHeight CGRectGetHeight(self.view.bounds) //屏幕高度宏

#define kScreenWidth CGRectGetWidth(self.view.bounds) //屏幕宽度宏

@interface MainViewController ()

@end

@implementation MainViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view.

    //分段控件

    

    UISegmentedControl *segmentControl = [[UISegmentedControl alloc] initWithItems:@[@"左视图",@"右视图"]];

    segmentControl.frame = CGRectMake(20, 50, kScreenWidth-40, 30);

    //设置分段的默认选中下标

    segmentControl.selectedSegmentIndex = 0;

  [segmentControl addTarget:self action:@selector(handleSegmentAction:) forControlEvents:UIControlEventValueChanged];

  [self.view addSubview:segmentControl];

  [segmentControl release];

    [self handleSegmentAction:segmentControl];

  //视图的宽度和间距

  CGFloat viewWidth = 120;

  CGFloat viewHeight = 200;

  CGFloat offsetX = (kScreenWidth -viewWidth*2)/3;

    for (int i = 0; i<2; i++) {

        UIView*aView=[[UIView alloc]initWithFrame:CGRectMake(offsetX+(viewWidth+offsetX)*i, 100, viewWidth, viewHeight)];

        aView.backgroundColor=i ? [UIColor greenColor]:[UIColor redColor];

        //加tag

        aView.tag = 200 + i;

        [self.view addSubview:aView];

        [aView release];

    }

    NSArray *colors = @[[UIColor redColor],[UIColor greenColor],[UIColor blueColor]];

    CGFloat offsetY = 20; //纵向偏移量

    for (int i = 0; i<colors.count; i++) {

        UISlider *aSlider = [[UISlider alloc] initWithFrame:CGRectMake(20, 400+(40+offsetY)*i, kScreenWidth-40, 40)];

        //设置最小值,最大值和当前值

        aSlider.minimumValue = 0;

        aSlider.maximumValue = 1;

        aSlider.value = 0;

        aSlider.minimumTrackTintColor = colors[i];

        aSlider.thumbTintColor = colors[i];

        //设置tag

        aSlider.tag = 300 + i;

        [aSlider addTarget:self action:@selector(handleSliderAction:) forControlEvents:UIControlEventValueChanged];

        [self.view addSubview:aSlider];

        [aSlider release];

    }

   

    

    UISwitch *aSwitch = [[UISwitch alloc] initWithFrame:CGRectMake(30, kScreenHeight-80, 0, 0)];

    aSwitch.on = NO; //设置开关当前状态,类似于分段的选中下标

    [aSwitch addTarget:self action:@selector(handleSwitchAction:) forControlEvents:UIControlEventValueChanged];

    [self.view addSubview:aSwitch];

    [aSwitch release];

    

    UIStepper *aStepper = [[UIStepper alloc] initWithFrame:CGRectMake(kScreenWidth-120, kScreenHeight-80, 0, 0)];

    aStepper.minimumValue = 200; //计步器的最小值,为视图的原始高度

    aStepper.maximumValue = 280; //计步器的最大值,为视图的最终高度

    aStepper.stepValue = 5; //每次增加的值

    aStepper.value = 200; //计步器的当前值

    [aStepper addTarget:self action:@selector(handleStepperAction:) forControlEvents:UIControlEventValueChanged];

    [self.view addSubview:aStepper];

    [aStepper release];

    //设置tag

    segmentControl.tag = 100;

    aSwitch.tag = 400;

    aStepper.tag = 401;

     [self handleSegmentAction:segmentControl];

}

-(void)handleSegmentAction:(UISegmentedControl *)sender{

    UISlider *redSlider = (UISlider *)[self.view viewWithTag:300];

    UISlider *greenSlider = (UISlider *)[self.view viewWithTag:301];

    UISlider *blueSlider = (UISlider *)[self.view viewWithTag:302];

    UISwitch *aSwitch = (UISwitch *)[self.view viewWithTag:400];

    UIStepper *aStepper = (UIStepper *)[self.view viewWithTag:401];

    UIView *currentView = [self.view viewWithTag:200 + sender.selectedSegmentIndex];

//    aSwitch.on = currentView.hidden;

    [aSwitch setOn:currentView.hidden animated:YES];

    aStepper.value = CGRectGetHeight(currentView.frame);

    CGFloat red, green, blue;

    [currentView.backgroundColor getRed:&red green:&green blue:&blue alpha:nil];

    redSlider.value = red;

    greenSlider.value = green;

    blueSlider.value = blue;

}

-(void)handleSliderAction:(UISlider *)sender{

    //得到三个滑杆的当前值,作为颜色三原色红绿蓝的色值

    CGFloat red = [(UISlider *)[self.view viewWithTag:300] value];

    CGFloat green = [(UISlider *)[self.view viewWithTag:301] value];

    CGFloat blue = [(UISlider *)[self.view viewWithTag:302] value];

    //通过segmentControl当前选中的下标来获取被改变的视图

    UISegmentedControl *segmentControl = (UISegmentedControl *)[self.view viewWithTag:100];

    UIView *currentView = [self.view viewWithTag:200 + segmentControl.selectedSegmentIndex];

    //设定视图的背景颜色

    currentView.backgroundColor = [UIColor colorWithRed:red green:green blue:blue alpha:1];

}

-(void)handleSwitchAction:(UISwitch *)sender{

    UISegmentedControl *segmentControl = (UISegmentedControl *)[self.view viewWithTag:100];

    UIView *currentView = [self.view viewWithTag:200 + segmentControl.selectedSegmentIndex];

    currentView.hidden = sender.on;

}

-(void)handleStepperAction:(UIStepper *)sender{

    UISegmentedControl *segmentControl = (UISegmentedControl *)[self.view viewWithTag:100];

    UIView *currentView = [self.view viewWithTag:200 + segmentControl.selectedSegmentIndex];

    CGRect frame = currentView.frame;

    frame.size.height = sender.value;

    currentView.frame = frame;

    

}