UISegmentedControl ,UIStepper,UISwitch,UISlider综合应用(实例需求)

我不是女神ヾ 2022-08-11 15:29 45阅读 0赞

![Center][]

需求:1.对两个视图对象进行:背景颜色,显示/隐藏,高度设置.但是每次只能设置一个视图对象.

2.创建UISemnebtedControl对象.两个分段显示:红色视图和绿色视图.默认选中第一个分段.

3.分段控件的作用:限制每次只能操作一个视图对象.

4.创建两个UIview累i小南国的视图对象,背景颜色分别为红色和绿色

5.创建三个UISlider对象,分别设置背景色的red,green,blue.即滑动任何一个滑块,都能改变操作视图的背景颜色.

6.创建UISwitch对象.关闭,隐藏被操作视图,打开:显示被操作视图.默认状态为打开.

7.创建UIStepper对象."+"增加被操作视图的高度."-"缩小被操作视图的高度.

主要代码:

#import "RootViewController.h"
    
    @interface RootViewController (){
        UIView *_redView;
        UIView *_greenView;
        UISegmentedControl *_segmentView;
        UISwitch *_switchView;
        UISlider *_blueSlider;
        UISlider *_redSlider;
        UISlider *_greenSlider;
        UIStepper *_stepper;
    }
    @end
    
    @implementation RootViewController
    
    - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
    {
        self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
        if (self) {
            // Custom initialization
        }
        return self;
    }
    
    - (void)viewDidLoad
    {
        [super viewDidLoad];
        // Do any additional setup after loading the view.
        self.view.backgroundColor = [UIColor whiteColor];
        //创建UIsegmentView
        NSArray *title = @[@"红色视图",@"绿色视图"];
        _segmentView = [[UISegmentedControl alloc] initWithItems:title];
        _segmentView.selectedSegmentIndex = 0;
        _segmentView.frame = CGRectMake(50, 40, 200, 40);
        [_segmentView addTarget:self action:@selector(segmentAction:) forControlEvents:UIControlEventValueChanged];
        [self.view addSubview:_segmentView];
        [_segmentView release];
        //创建视图
        _redView = [[UIView alloc] initWithFrame:CGRectMake(40, 120, 100, 200)];
        _redView.backgroundColor = [UIColor redColor];
        [self.view addSubview:_redView];
        [_redView release];
        _greenView = [[UIView alloc] initWithFrame:CGRectMake(160, 120, 100, 200)];
        _greenView.backgroundColor = [UIColor greenColor];
        [self.view addSubview:_greenView];
        [_greenView release];
        //创建UISlider
        UILabel *redLabel = [[UILabel alloc] initWithFrame:CGRectMake(50, 330, 40, 40)];
        redLabel.text = @"红色";
        [self.view addSubview:redLabel];
        [redLabel release];
        _redSlider = [[UISlider alloc] initWithFrame:CGRectMake(110, 350, 150, 10)];
        _redSlider.maximumValue = 1.0;
        _redSlider.minimumValue = 0.0;
        [_redSlider addTarget:self action:@selector(handleSlider:) forControlEvents:UIControlEventValueChanged];
        [self.view addSubview:_redSlider];
        [_redSlider release];
        UILabel *greenLabel = [[UILabel alloc] initWithFrame:CGRectMake(50, 370, 40, 40)];
        greenLabel.text = @"绿色";
        [self.view addSubview:greenLabel];
        [greenLabel release];
        _greenSlider = [[UISlider alloc] initWithFrame:CGRectMake(110, 390, 150, 10)];
        _greenSlider.maximumValue = 1.0;
        _greenSlider.minimumValue = 0.0;
        [_greenSlider addTarget:self action:@selector(handleSlider:) forControlEvents:UIControlEventValueChanged];
        [self.view addSubview:_greenSlider];
        [_greenSlider release];
        UILabel *blueLabel = [[UILabel alloc] initWithFrame:CGRectMake(50, 410, 40, 40)];
        blueLabel.text = @"蓝色";
        [self.view addSubview:blueLabel];
        [blueLabel release];
        _blueSlider = [[UISlider alloc] initWithFrame:CGRectMake(110, 430, 150, 10)];
        _blueSlider.maximumValue = 1.0;
        _blueSlider.minimumValue = 0.0;
        [_blueSlider addTarget:self action:@selector(handleSlider:) forControlEvents:UIControlEventValueChanged];
        [self.view addSubview:_blueSlider];
        [_blueSlider release];
    
    
        //UIStepper
        _stepper = [[UIStepper alloc] initWithFrame:CGRectMake(180, 500, 50, 40)];
        _stepper.backgroundColor = [UIColor whiteColor];
        [_stepper addTarget:self action:@selector(stepperAction:) forControlEvents:UIControlEventValueChanged];
        [_stepper setMinimumValue:0];
        [_stepper setMaximumValue:100];
        _stepper.stepValue = 20;//每次递增
        [_stepper setWraps:YES];
        [_stepper setContinuous:YES];
        [self.view addSubview:_stepper];
        [_stepper release];
        //UISwitch
        _switchView = [[UISwitch alloc] initWithFrame:CGRectMake(50, 500, 40, 10)];
        _switchView.on = NO;//设置初始化为打开状态
        [_switchView addTarget:self action:@selector(switchAction:) forControlEvents:UIControlEventValueChanged];
        [self.view addSubview:_switchView];
        [_switchView release];
    }
    - (void)redChange{
        _redView.backgroundColor =[UIColor colorWithRed:1 -_redSlider.value green:1 -_greenSlider.value blue: 1-_blueSlider.value alpha:1.0];
    }
    - (void)greenChange{
        _greenView.backgroundColor =[UIColor colorWithRed:1 -_redSlider.value green:1 - _greenSlider.value blue:1 - _blueSlider.value alpha:1.0];
    }
    - (void)handleSlider:(UISlider *)slider{
        switch (_segmentView.selectedSegmentIndex) {
            case 0:
                [self redChange];
                break;
            case 1:
                [self greenChange];
                break;
            default:
                break;
        }
        
    }
    - (void)segmentAction:(UISegmentedControl *)segment{
    }
    - (void)switchAction:(UISwitch *)sh{
        if (_switchView.on == YES) {
            if(_segmentView.selectedSegmentIndex == 0){
                _redView.hidden = YES;
                _redSlider.userInteractionEnabled = NO;
                _greenSlider.userInteractionEnabled = NO;
                _blueSlider.userInteractionEnabled = NO;
                _stepper.userInteractionEnabled = NO;
            }else if (_segmentView.selectedSegmentIndex == 1){
                _greenView.hidden = YES;
                _redSlider.userInteractionEnabled = NO;
                _greenSlider.userInteractionEnabled = NO;
                _blueSlider.userInteractionEnabled = NO;
                _stepper.userInteractionEnabled = NO;
            }
        }else{
            if (_segmentView.selectedSegmentIndex == 0) {
                _redView.hidden = NO;
                _redSlider.userInteractionEnabled = YES;
                _greenSlider.userInteractionEnabled = YES;
                _blueSlider.userInteractionEnabled = YES;
                _stepper.userInteractionEnabled = YES;
            }else if (_segmentView.selectedSegmentIndex == 1){
                _greenView.hidden = NO;
                _redSlider.userInteractionEnabled = YES;
                _greenSlider.userInteractionEnabled = YES;
                _blueSlider.userInteractionEnabled = YES;
                _stepper.userInteractionEnabled = YES;
            }
        }
    }
    - (void)stepperAction:(UIStepper *)stepper{
        int temp = stepper.value;
        if (0 == _segmentView.selectedSegmentIndex) {
            //_redView.center = CGPointMake(temp, temp);
            _redView.bounds = CGRectMake(temp, temp, temp, temp);
        }else if (1 == _segmentView.selectedSegmentIndex){
            _greenView.bounds = CGRectMake(_greenView.bounds.origin.x, _greenView.bounds.origin.y, temp, temp);
        }
        
    }
    - (void)didReceiveMemoryWarning
    {
        [super didReceiveMemoryWarning];
    }
    @end

[Center]: /images/20220810/898c6b7da0614ce9af022c19eab73dd2.png