iOS学习之UIControl

/**
 *  1.当触摸从控件内部拖动到外部时触发：UIControlEventTouchDragExit
    2.当控件之内触摸抬起时触发：UIControlEventTouchUpInside
    3.当控件之外触摸抬起时触发：UIControlEventTouchUpOutside
    4.触摸取消事件，设备被上锁或者电话呼叫打断：UIControlEventTouchCancel
    5.用户按下时触发：UIControlEventTouchDown
    6.点击计数大于1时触发：UIControlEventTouchDownRepeat
    7.当触摸在控件之内拖动时触发：UIControlEventTouchDragInside
    8.当触摸在控件之外拖动时触发：UIControlEventTouchDragOutside
    9.当触摸从控件之外拖动到内部时触发：UIControlEventTouchDragEnter
    10.当控件的值发生变化时（用于滑块、分段控件等控件）：UIControlEventValueChanged
    11.文本控件中开始编辑时：UIControlEventEditingDidBegin
    12.文本控件中的文本被改变：UIControlEventEditingChanged
    13.文本控件中编辑结束时：UIControlEventEditingDidEnd
    14.文本控件内通过按下回车键结束编辑时：UIControlEventEditingDidOnExit
    15.所有触摸事件：UIControlEventAllTouchEvents
    16.文本编辑的所有事件：UIControlEventAllEditingEvents
    17.所有事件：UIControlEventAllEvents
 */

#import <UIKit/UIKit.h>

@interface Root : UIView
// 分段选择器
@property (nonatomic, strong) UISegmentedControl *segmentControl;

// 图片视图
@property (nonatomic, strong) UIImageView *myImageView;
@property (nonatomic, strong) UIImageView *myImageView1;


@end

#import "Root.h"

@implementation Root

- (instancetype)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        // 添加视图
        [self addAllViews];
    }
    return self;
}
// 添加视图
- (void)addAllViews
{
    // 创建对象
    self.segmentControl = [[UISegmentedControl alloc] initWithItems:@[@"女神", @"男神", @"程序员"]];
    // 设置属性
    self.segmentControl.backgroundColor = [UIColor grayColor];
    self.segmentControl.frame = CGRectMake(57, 100, 300, 50);
    // 指定被选中的分段
    self.segmentControl.selectedSegmentIndex = 0;
    self.segmentControl.tintColor = [UIColor colorWithRed:1.0 green:215 / 255.0 blue:0 alpha:1];
    [self.segmentControl setTitle:@"aFu" forSegmentAtIndex:2];
    // 添加到父视图
    [self addSubview:self.segmentControl];
    // 布局图片视图
    self.myImageView = [[UIImageView alloc] initWithFrame:CGRectMake(50, CGRectGetMaxY(self.segmentControl.frame) + 50, 314, 500)];
    // 设置默认图片
    self.myImageView.image = [UIImage imageNamed:@"女神.jpg"];
    [self addSubview:self.myImageView];
}
@end

#import "RootViewController.h"
#import "Root.h"
@interface RootViewController ()
@property (nonatomic, strong) Root *root;

@end

@implementation RootViewController
- (void)loadView
{
    self.root = [[Root alloc] initWithFrame:[UIScreen mainScreen].bounds];
    self.view = self.root;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    [self.root.segmentControl addTarget:self action:@selector(segmentControlAction:) forControlEvents:UIControlEventValueChanged];
}

- (void)segmentControlAction:(UISegmentedControl *)sender
{
    NSInteger index = sender.selectedSegmentIndex;
    switch (index) {
        case 0:
            self.root.myImageView.image = [UIImage imageNamed:@"女神.jpg"];
            [self.root addSubview:self.root.myImageView];
            break;
        case 1:
            self.root.myImageView.image = [UIImage imageNamed:@"男神.jpg"];
            [self.root addSubview:self.root.myImageView];
            break;
        case 2:
            self.root.myImageView.image = [UIImage imageNamed:@"屌丝.jpg"];
            [self.root addSubview:self.root.myImageView];
            break;
            
        default:
            break;
    }
}
@end

#import "RootViewController.h"

@interface RootViewController ()

@property (nonatomic, strong) UIPageControl *myPage;
@property (nonatomic, strong) UIView *pageView;
@end

@implementation RootViewController




- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    [self addPageControl];
    // 添加事件
    [self.myPage addTarget:self action:@selector(myPageAction:) forControlEvents:UIControlEventValueChanged];
    
}

#pragma mark - UIPageControl
- (void)addPageControl
{
    self.myPage = [[UIPageControl alloc] initWithFrame:CGRectMake(100, self.view.frame.size.height - 100, self.view.frame.size.width - 200, 40)];
    // 设置页数
    self.myPage.numberOfPages = 4;
    // 设置当前页
    self.myPage.currentPage = 0;
    self.myPage.backgroundColor = [UIColor grayColor];
    //如果是单页就隐藏
    self.myPage.hidesForSinglePage = YES;
    // 选中的圆点颜色
    self.myPage.currentPageIndicatorTintColor = [UIColor whiteColor];
    // 未选中的圆点颜色
    self.myPage.pageIndicatorTintColor = [UIColor blackColor];
    [self.view addSubview:self.myPage];
    
    self.pageView = [[UIView alloc] initWithFrame:CGRectMake(100, self.view.frame.size.height - 450, 214, 300)];
    self.pageView.backgroundColor = [UIColor grayColor];
    [self.view addSubview:self.pageView];
}

// 实现事件
- (void)myPageAction:(UIPageControl *)page
{
    NSInteger index = page.currentPage;
    switch (index) {
        case 0:
            self.pageView.backgroundColor = [UIColor grayColor];
            break;
        case 1:
            self.pageView.backgroundColor = [UIColor cyanColor];
            break;
        case 2:
            self.pageView.backgroundColor = [UIColor blackColor];
            break;
        case 3:
            self.pageView.backgroundColor = [UIColor brownColor];
            break;
        default:
            break;
    }
}
@end