ios(常用控件)UIStepper、UISlider、UISw

作者: 我不白先生 | 来源:发表于2020-10-14 11:36 被阅读0次

UIStepper步进控件

记录一个可变化的浮点数值，与用户的交互动作为点击动作，可以精确控制数字的变化

属性：
value 用于记录的浮点数
Autorepeat 按住不松手是否会连续改变数值
Continuous是否能够看到连续变化的过程，勾上，则按下不松手会看到数字连续变化的过程
Wrap数字是否可以循环，即到达最大或最小以后，是否还会继续变化
事件：valueChanged

@implementation MyViewController
- (IBAction)valueChanged:(UIStepper *)sender {
    self.label.text = [NSString stringWithFormat:@"%f",sender.value];
}

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
    self.label.text = [NSString stringWithFormat:@"%f",self.stepper.value];
}

UISlider滑块控件

记录一个可变化的浮点数值，与用户的交互方法为滑动动作，不太能精确控制数字，但能快速得到某个范围内的数值

属性：value
事件：valueChanged
MyViewController.m

@property (weak, nonatomic) IBOutlet UIView *myView;
@property (weak, nonatomic) IBOutlet UISlider *redSlider;
@property (weak, nonatomic) IBOutlet UISlider *greenSlider;
@property (weak, nonatomic) IBOutlet UISlider *blueSlider;
@property (weak, nonatomic) IBOutlet UISlider *alphaSlider;
@property (weak, nonatomic) IBOutlet UISwitch *mySwitch;

@end

@implementation MyViewController
-(void)setSliderEnabled{
    self.redSlider.enabled = self.mySwitch.on;
    self.greenSlider.enabled = self.mySwitch.on;
    self.blueSlider.enabled = self.mySwitch.on;
    self.alphaSlider.enabled = self.mySwitch.on;
}
-(void)setMyViewBackGroundColor
{
    self.myView.backgroundColor =
    [UIColor colorWithRed:self.redSlider.value
    green:self.greenSlider.value blue:self.blueSlider.value alpha:self.alphaSlider.value];
}
- (IBAction)mySwitch:(UISwitch *)sender {
    [self setSliderEnabled];
    
}
- (IBAction)Valuechanged:(UISlider *)sender {
    [self setMyViewBackGroundColor];
}
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
    [self setMyViewBackGroundColor];
    
}

UISwitch开关控件

记录了一个布尔型的值

属性：on
事件：valueChanged
SwitchViewController.m

@implementation SwitchViewController
- (IBAction)valuechage:(UISwitch *)sender {
    self.labei.text = sender.on ? @"开":@"关";
}
- (IBAction)buttonClick:(id)sender {
    //取出控件getter方法
    //设置控件setter方法
    //self.mySwitch.on = !self.mySwitch.on;
   [self.mySwitch setOn:!self.mySwitch.on animated:YES];
}
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
     self.labei.text = self.mySwitch.on ? @"开":@"关";
}

UISegmenterControl分段控件（单选控件）

记录用户的一个选择

属性：selectedSegmentIndex(从0开始计数)
事件：valueChanged

UIDatePicker日期选择器

属性：date(NSDate类型)

UINavigationController导航控制器

不在于提供一个可以展示的完整的界面，而是用于管理子控制器的切换。所有控制器在切换界面之前，先和导航沟通，由导航控制器负责推出新的界面，或返回到上一个界面

如何使用

step1：创建导航控制器实例（alloc init）
step2:设置导航的根视图控制器
step3：为了显示导航管理的界面，还需要将导航设置为window的根视图控制器

子控制器的切换

step1:如果需要导航推出新的控制器，则使用导航的pushViewController方法即可
step2:如何需要导航返回到上一个控制器，则使用导航的popViewController方法即可
AppDelegate.m

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    self.window = [[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];
    //创建一个导航控制器
    UINavigationController *navi = [[UINavigationController alloc]initWithRootViewController:[[MyViewController alloc]init]];
    self.window.rootViewController = navi;
    [self.window makeKeyAndVisible];
    return YES;
}

MyViewController.m

#import "MyViewController.h"
#import "BViewController.h"
@interface MyViewController ()
@end
@implementation MyViewController
-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
    BViewController *bvc = [[BViewController alloc]init];
  //如果希望BVC 也在 管理MyViewController的导航控制器下
  //就要获取 管理当前 MyViewController 的导航控制器，让后在该导航控制器下 推出一个新的界面
    [self.navigationController pushViewController:bvc animated:YES];
}
- (void)viewDidLoad {
    [super viewDidLoad];
    //设置导航条上的标题
    self.navigationItem.title = @"登陆";
    self.navigationController.navigationBar.barStyle = UIBarStyleBlack;
}

BViewController.m

#import "BViewController.h"
#import "CViewController.h"
@interface BViewController ()
@end
@implementation BViewController
-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
    //回到上一个 子控制器界面
    //[self.navigationController popViewControllerAnimated:YES];
    
    
    //获取导航控制器下的所有 子控制器 rootViewController是该数组下标为0的元素
//    NSArray<UIViewController*> *vcs =self.navigationController.viewControllers;
//    UIViewController *myVc = vcs[0];
    //回到指定控制器界面
    //[self.navigationController popToViewController:myVc animated:YES];
    //回到 导航控制器 的rootViewController
    [self.navigationController popToRootViewControllerAnimated:YES];
}
- (IBAction)gotoCVC:(id)sender {
    CViewController *cvc = [[CViewController alloc]init];
    UINavigationController *navi = [[UINavigationController alloc]initWithRootViewController:cvc];
    [self presentViewController:navi animated:YES completion:nil];
}
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
}

导航栏的配置

@implementation MyViewController
-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
    self.navigationController.toolbarHidden = ! self.navigationController.toolbarHidden;
}
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
    /******************** 中间  ************************/
    self.view.backgroundColor = [UIColor redColor];
    //设置当前控制器导航条的内容
    //title(文本)/titleView(设置一个视图)
    self.navigationItem.title = @"导航条";

//    UIView *greenView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 40, 40)];
//    greenView.backgroundColor = [UIColor greenColor];
//    UISegmentedControl *segment = [[UISegmentedControl alloc]initWithItems:@[@"所有电话",@"未接电话"]];
//    CGRect frame = segment.frame;
//    frame.origin.x =greenView.frame.origin.x + greenView.frame.size.width;
//    frame.origin.y = (40 - frame.size.height) * 0.5;
//    [segment addTarget:self action:@selector(valueChanged:) forControlEvents:UIControlEventValueChanged];
//    UIView *titleView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, segment.frame.size.width + greenView.frame.size.width, 40)];
//    [titleView addSubview:greenView];
//    [titleView addSubview:segment];
    //设置中间视图
    //self.navigationItem.titleView = titleView;
     /******************** 左边  ************************/
    //leftBarButtonItem /leftBarButtonItems
   UIBarButtonItem *item1= [[UIBarButtonItem alloc]initWithTitle:@"编辑" style:UIBarButtonItemStylePlain target:nil action:nil];
    UIBarButtonItem *item2= [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemCamera target:nil action:nil];
    //创建一个不受影响的图片对象
    UIImage *image = [[UIImage imageNamed:@"timg"]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
    UIBarButtonItem *item3 = [[UIBarButtonItem alloc]initWithImage:image style:UIBarButtonItemStylePlain target:nil action:nil];
    self.navigationItem.leftBarButtonItems = @[item2,item3];
    /***************************右边*****************************/
    UIBarButtonItem *item4 = [[UIBarButtonItem alloc]initWithTitle:@"跳转" style:UIBarButtonItemStylePlain target:self action:@selector(gotoBVC:)];
    UIBarButtonItem *item5 = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:nil action:nil];
    self.navigationItem.rightBarButtonItems = @[item4,item5];
    /*以上部分 是设置 navigationItem, navigationItem的设置在当前的控制器生效
     下面的部分 是设置 navigationBar, navigationBar是导航控制器上得到航条，一旦设置，导航控制器下地所有控制器全部会改变*/
    //设置导航条样式
    UINavigationBar *naviBar = self.navigationController.navigationBar;
    naviBar.barStyle = UIBarStyleBlack;
    //设置导航上图片不透明 YES为半透明 NO为不透明 默认为YES
    naviBar.translucent = NO;
    //修改 两边 按键的 颜色
    naviBar.tintColor = [UIColor greenColor];
    //设置导航条背景
    naviBar.barTintColor = [UIColor yellowColor];
    //设置导航条上得背景图片
    //[naviBar setBackgroundImage:[UIImage imageNamed:@"psc-1"]forBarMetrics:UIBarMetricsDefault];
    [naviBar setBackgroundImage:[[UIImage alloc]init] forBarMetrics:UIBarMetricsDefault];
    //设置 导航条下 阴影图片
    [naviBar setShadowImage:[[UIImage alloc]init]];
    //设置导航控制器下面的 toolBar
    //toolBar默认是隐藏的 如果需要使用 必须设置显示出来
    self.navigationController.toolbarHidden = NO;
    self.navigationController.toolbar.barStyle = UIBarStyleBlack;
    self.navigationController.toolbar.tintColor = [UIColor greenColor];
    UIBarButtonItem *toolBarItem1 = [[UIBarButtonItem alloc]initWithTitle:@"编辑" style:UIBarButtonItemStylePlain target:nil action:nil];
    UIBarButtonItem *toolBarItem2 = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemPlay target:nil action:nil];
     UIBarButtonItem *toolBarItem3 = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemSave target:nil action:nil];
    //创建木棍特效（UIBarButtonItem样式）
    UIBarButtonItem *fixItem1 = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
    fixItem1.width = 20;
     UIBarButtonItem *fixItem2 = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
    fixItem1.width = 50;
    //创建弹簧特效（UIBarButtonItem样式）
    UIBarButtonItem *flexibleItem = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
    self.toolbarItems = @[fixItem1,toolBarItem1,fixItem2,toolBarItem2,flexibleItem,toolBarItem3,fixItem1];  
}
-(void)valueChanged:(UISegmentedControl*)sender{
    switch (sender.selectedSegmentIndex) {
        case 0:
            NSLog(@"查看所有通话");
            break;
        case 1:
            NSLog(@"查看未接通话");
            break;
    }
}
-(void)gotoBVC:(id)sender{
    BViewController *bvc = [[BViewController alloc]init];
    [self.navigationController pushViewController:bvc animated:YES];
}

NSTimer定时器

设定一定时间后，自动调用某方法

使用：使用工厂方法schedule....创建定时器，并且使用此方法创建完毕后，定时器会立即启动
使用invalidate方法销毁定时器

MyViewController.m

@interface MyViewController ()
@property (weak, nonatomic) IBOutlet UIImageView *imageView1;
@property (weak, nonatomic) IBOutlet UIImageView *imageView2;
@property(nonatomic,strong)NSTimer *timer1;
@end

@implementation MyViewController

-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
//    [NSTimer scheduledTimerWithTimeInterval:0.5 repeats:YES block:^(NSTimer * _Nonnull timer) {
//        NSLog(@"定时器到时了");
//    }];
    //[NSTimer scheduledTimerWithTimeInterval:<#(NSTimeInterval)#> invocation:<#(nonnull NSInvocation *)#> repeats:<#(BOOL)#>]
    //使用 scheduled 开头的工厂方法，会创建定时器对象，并把自己添加到当前的事件循环中
    self.timer1 = [NSTimer scheduledTimerWithTimeInterval:0.05 target:self selector:@selector(run:) userInfo:nil repeats:YES];
    NSTimer *timer = [NSTimer timerWithTimeInterval:0.05 target:self selector:@selector(run2:) userInfo:nil repeats:YES];
    //将定时器添加到 当前循环事件中 定时器才开始运行
    [[NSRunLoop currentRunLoop]addTimer:timer forMode:NSDefaultRunLoopMode];
}
-(void)run:(NSTimer*)timer
{
     NSLog(@"定时器到时了");
    CGPoint center = self.imageView1.center;
    center.y += 5;
    self.imageView1.center = center;
    if(self.imageView1.center.y >= 450)
    {//销毁定时器
        [self.timer1 invalidate];
    }
}
-(void)run2:(NSTimer*)timer
{
    NSLog(@"定时器到时了");
    CGPoint center = self.imageView2.center;
    center.y += 5;
    self.imageView2.center = center;
}

ios(常用控件)UIStepper、UISlider、UISw

UIStepper步进控件

UISlider滑块控件

UISwitch开关控件

UISegmenterControl分段控件（单选控件）

UIDatePicker日期选择器

UINavigationController导航控制器

导航栏的配置

NSTimer定时器

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