UIControl 及其子类

 

#import "MainViewController.h"

//1,宏定义

#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.

    

//2分段控件

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

    

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

    

    

    segmentedControl.selectedSegmentIndex=0;

    

    

    

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

    segmentedControl.tag=100;

    [self.view addSubview:segmentedControl];

    

//3,两个视图

    

    //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)]autorelease];

        aView.backgroundColor = i ? [UIColor greenColor]:[UIColor redColor];//三目运算 i==0 ,表示假;i==1,表示 真;

        

        aView.tag = 200 + i;

        

        [self.view addSubview:aView];

        

    }

    

//4,滑杆

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

    CGFloat offsetY= 20;//纵向

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

        UISlider *aSlider=[[[UISlider alloc]initWithFrame:CGRectMake(40, 400+(40+offsetY) * i, kScreenWidth-80, 40)]autorelease];

        //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];

        

        aSlider.tag=300+i;

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

        

        [self.view addSubview:aSlider];

        

    }

    

    

//5开关

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

    aSwitch.on=NO;//设置开关当前状态,

    

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

     aSwitch.tag=400;

    [self.view addSubview:aSwitch];

    

    //

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

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

    aStepper.maximumValue=280;//计步器的最大高度,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];

     aStepper.tag=401;

    [self.view addSubview:aStepper];

    

    //调用方法

   [self handleSegmentAction:segmentedControl];

   

    

    

}

//分段方法

- (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 setOn:currentView.hidden animated:YES];

//    aSwitch.on=currentView.hidden;

    aStepper.value=CGRectGetHeight(currentView.frame);

   

    CGFloat red,green,blue;

    

    //获取颜色

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

    

    redSlider.value=red;

    greenSlider.value=green;

    blueSlider.value=blue;

    

    

    

    

    

}

//滑杆方法

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

    //得到三个滑杆的当前值,作为颜色三原色的色值

    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];

    

    

}

//开关方法

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

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

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

    currentView.hidden=sender.on;

    

    

}

//+-方法

- (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;

    

    

}