[6]UIControl及其⼦子类

UISegmentedControl 分段控件

//根控制器  .h文件
#import <UIKit/UIKit.h>
@interface RootViewController : UIViewController<UITextFieldDelegate>
//添加视图属性 方便切换a和b,然后重写get方法实现 初始化
@property (nonatomic, retain) UIView *aView;
@property (nonatomic, retain) UIView *bView;
@property (nonatomic, retain) UIImageView *imageView;
@end
//.m文件
@implementation RootViewController
- (void)dealloc
{
    [_aView release];
    [_bView release];
    [_imageView release];
    [super dealloc];
}
//点击return释放手势
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
    [textField resignFirstResponder];
    return YES;
    }
//点击手势 随机一张照片
- (void)tapView
{
    _imageView.image = [UIImage imageNamed:[NSString stringWithFormat:@"%d",arc4random() % 5 + 1]];
}
//aView的get方法
- (UIView *)aView
{
    if (_aView == nil)
    {
        _aView = [[UIView alloc] initWithFrame:CGRectMake(30, 150, 300, 500)];
        UITextField *tf = [[UITextField alloc] initWithFrame:CGRectMake(30, 10, 200, 40)];
        tf.placeholder = @"输入框";
        tf.borderStyle = UITextBorderStyleRoundedRect;
        tf.delegate = self;
        [_aView addSubview:tf];
        [tf release];
    }
    return _aView;
}
//bView的get方法
- (UIView *)bView
{
    if (_bView == nil)
    {
        _bView = [[UIView alloc] initWithFrame:CGRectMake(30, 150, 300, 500)];
        _imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"1"]];
        _imageView.frame = CGRectMake(0, 0, 300, 500);
        _imageView.userInteractionEnabled = YES;
        
        UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapView)];
        tap.numberOfTapsRequired = 1;
        tap.numberOfTouchesRequired = 1;    
        [_imageView addGestureRecognizer:tap];
        [_bView addSubview:_imageView];
        [_imageView release];
        [tap release];
    }
    return _bView;
}
- (void)click:(UISegmentedControl *)seg
{
    switch (seg.selectedSegmentIndex) {
        case 0:
            //防止重复添加的代码。
            for (UIView *view in self.view.subviews) {
//如果子类视图中的tag不等1001就代表有bView在上面,然后释放并添加aView,也方便多分段来显示
                if (view.tag != 1001) {
                    [view removeFromSuperview];
                }
            }
            [self.view addSubview:self.aView];
            break;
        case 1:
            for (UIView *view in self.view.subviews) {
                if (view.tag != 1001) {
                    [view removeFromSuperview];
                }
            }
            [self.view addSubview:self.bView];
            break;
        default:
            break;
    }
}
- (void)viewDidLoad {
    [super viewDidLoad];    
    //创建一个分段控件
    UISegmentedControl *seg = [[UISegmentedControl alloc] initWithItems:@[@"男",@"女",@"伪娘",@"人妖",@"其他"]];//这个初始化方法是分段控件特有的一个初始化方法。    
    seg.tag = 1001;    
    seg.frame = CGRectMake(30, 80, 300, 40);//设置它的大小和位置
    seg.selectedSegmentIndex = 2;//设置刚开始显示时，在哪个segment上面
    seg.tintColor = [UIColor redColor];//设置主题颜色，包含边框以及每个segment显示的文本颜色
    [seg addTarget:self action:@selector(click:) forControlEvents:UIControlEventValueChanged];//添加点击方法
    [self.view addSubview:seg];//添加显示
    [seg release];//释放内存
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
}
@end

UISlider

UISlider是iOS中的滑块控件
minimumValue //设置滑块的最小值
maximumValue //设置滑块的最⼤值
value //设置滑块的当前值 minimumTrackTinkColor //定义划过区域的颜色
addTarget: action: forControlEvents: 给UISlider添加事件, controlEvent为UIControlEventValueChanged。
[slider thumbImageForState:UIControlStateNormal];
[slider setThumbImage:[UIImage imageNamed:@"o2"] forState:UIControlStateNormal];//设置了普通状态和高亮状态的滑轮样式
slider.minimumTrackTintColor = [UIColor redColor]; //划过的线的颜色
slider.maximumTrackTintColor = [UIColor whiteColor];//没划过的线的颜色
//竖向显示 slider 使用transform属性 旋转一定弧度 旋转九十度 pi代表180度
slider.transform = CGAffineTransformMakeRotation(M_PI * 0.5);

//根视图控制器中建
@property (nonatomic, retain) UIImageView *imageView;

//.m文件
@implementation RootViewController
- (void)voiceChange:(UISlider *)slider
{
    NSLog(@"%.2f",slider.value);
    [_imageView stopAnimating];
    _imageView.animationDuration = slider.value;
    [_imageView startAnimating];
}
- (void)viewDidLoad {
    [super viewDidLoad];
    //创建一个滑块对象
    UISlider *slider = [[UISlider alloc] initWithFrame:CGRectMake(30, 80, 300, 100)];    
    slider.backgroundColor = [UIColor blueColor];    
    //设置它的最小值
    slider.minimumValue = 0;
    //设置它的最大值
    slider.maximumValue = 2;
    //设置它初始位置在中间
//    slider.value = (slider.minimumValue + slider.maximumValue)     
    //设置划过区域的颜色为红色
    slider.minimumTrackTintColor = [UIColor redColor];
    [slider setThumbImage:[UIImage imageNamed:@"3"] forState:UIControlStateNormal];
    
    //设置球的颜色
    slider.thumbTintColor = [UIColor yellowColor];
    [slider addTarget:self action:@selector(voiceChange:) forControlEvents:UIControlEventValueChanged];
    [self.view addSubview:slider];
    [slider release];
    _imageView = [[UIImageView alloc] initWithFrame:CGRectMake(30, 150, 166, 144)];
    
    NSMutableArray *imageArray = [[NSMutableArray alloc] initWithCapacity:22];
    
    for (int i = 0; i < 22; i ++)
    {
        NSString *imageName = [NSString stringWithFormat:@"Zombie%d.tiff",i + 1];
        UIImage *image = [UIImage imageNamed:imageName];
        [imageArray addObject:image];
    }
    
    //指定需要做动画的图片
    _imageView.animationImages = imageArray;
    _imageView.animationDuration = 0.5;//设置播放的时间
    _imageView.animationRepeatCount = 0;//设置循环次数
    [self.view addSubview:_imageView];
    [_imageView startAnimating];//让其开始播放
    [_imageView release];
    // Do any additional setup after loading the view.
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

注意

    //6.3之前的版本有bug,需要先设置颜色在设置球的颜色才可以
    [slider setThumbImage:[UIImage imageNamed:@"100.jpg"] forState:UIControlStateNormal];
    //设置球的颜色
    slider.thumbTintColor = [UIColor blackColor];
    //6.31版本 bug不能用下面方法添加图片
    [slider setThumbImage:[UIImage imageNamed:@"100.jpg"] forState:UIControlStateHighlighted];