UI中一些不常用的控件UIActivityIndicatorView、UIProgressView、UISegmentedControl、UIStepper、UISwitch、UITextView、UIAlertController

//UIActivityIndicatorView //小菊花，加载

#import "ActivityIndicatorVC.h"

@interface ActivityIndicatorVC (){
    UIActivityIndicatorView *_activity ;
}

@end

@implementation ActivityIndicatorVC

-(void)viewDidLoad{
    [super viewDidLoad];
    
    [self createActivityIndicator];
    
}

-(void)createActivityIndicator{
    //创建对象
    _activity = [[UIActivityIndicatorView alloc]initWithFrame:CGRectMake(100, 200, 100, 100)];
    
    _activity.backgroundColor = [UIColor blackColor];
    
    _activity.activityIndicatorViewStyle = UIActivityIndicatorViewStyleWhiteLarge;
    
    [self.view addSubview:_activity];
    
    //让状态栏中的activityIndicator显示出来
    [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];
    
    //开始动画
    [_activity startAnimating];
    
}


    // 想要停止的话添加
    // [_activity stopAnimating];
    //[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
    
@end

 45 // UIProgressView //进度条
#import "ProgressVC.h"



@implementation ProgressVC{
    UIProgressView *_progress ;
    NSTimer *_timer;
}


-(void)viewDidLoad{
    [super viewDidLoad];
    
    self.btn.hidden = YES;
    
    [self createProgress];
    
    [self createTimer];
}

-(void)createProgress{
    _progress = [[UIProgressView alloc]initWithFrame:CGRectMake(50, 100, 200, 50)];
    [self.view addSubview:_progress];
//    progress.backgroundColor = [UIColor lightGrayColor];
   
    _progress.tintColor = [UIColor redColor];
    
    _progress.progressTintColor = [UIColor greenColor];
    _progress.trackTintColor = [UIColor blueColor];
    
    _progress.progress = 0.01;
}

-(void)createTimer{
    _timer = [NSTimer scheduledTimerWithTimeInterval:0.1 target:self selector:@selector(run ) userInfo:nil repeats:YES];
}

-(void)run{
    _progress.progress += 0.01;
}

@end


 90   // UISegmentedControl //分段

-(void)viewDidLoad{
    [super viewDidLoad];
    
    self.btn.hidden = YES;
    
    [self createSegment];
}

-(void)createSegment{
    
    NSArray *items = @[@"00000", @"1111", @"2222"];
    
    UISegmentedControl *segment = [[UISegmentedControl alloc] initWithItems:items];
    
    segment.frame = CGRectMake(50, 100, 300, 40);
    segment.backgroundColor = [UIColor magentaColor];
    segment.tintColor = [UIColor yellowColor];
    segment.selectedSegmentIndex = 0;
    
    [segment insertSegmentWithTitle:@"4444" atIndex:1 animated:YES];
    [segment insertSegmentWithImage:[UIImage imageNamed:@"tab_0"] atIndex:1 animated:YES];
    //让图片显示原始图片
    UIImage *img = [[UIImage imageNamed:@"tab_0"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
    
    [segment insertSegmentWithImage:img atIndex:1 animated:YES];
    
    [self.view addSubview:segment];
    
    //添加事件
    [segment addTarget:self action:@selector(segmentSelected:) forControlEvents:UIControlEventValueChanged];
    

}

-(void)segmentSelected:(UISegmentedControl *)segment{
    NSLog(@"%ld", segment.selectedSegmentIndex);
}



//UIStepper //步进

-(void)viewDidLoad{
    [super viewDidLoad];
    
    self.btn.hidden = YES;
    
    [self createStepper];
}

-(void)createStepper{
    UIStepper *stepper =[[ UIStepper alloc]initWithFrame:CGRectMake(50, 100, 300, 40)];
    [self.view addSubview:stepper];
    
    stepper.tintColor = [UIColor redColor];
    stepper.backgroundColor = [UIColor greenColor];
    
    stepper.minimumValue = 0;
    stepper.maximumValue = 100;
    stepper.stepValue = 5;
    stepper.wraps = YES;
    stepper.autorepeat = YES;
    
    [stepper addTarget:self action:@selector(steperValueChanged:) forControlEvents:UIControlEventValueChanged];
}

-(void)steperValueChanged:(UIStepper *)stepper{
    NSLog(@"%f", stepper.value);
    
    
}

//UISwitch  //开关

-(void)viewDidLoad{
    [super viewDidLoad];
    
    self.btn.hidden = YES;
    
    [self createSwitch];
}

-(void)createSwitch{
    UISwitch *mySwitch = [[UISwitch alloc]initWithFrame:CGRectMake(50, 100, 200, 40)];
    
    mySwitch.onTintColor = [UIColor redColor];
    mySwitch.tintColor = [UIColor greenColor];
    
    [self.view addSubview:mySwitch];
    
    [mySwitch addTarget:self action:@selector(switchValueChanged:) forControlEvents:UIControlEventValueChanged];
}

-(void)switchValueChanged:(UISwitch *)mySwitch{
    if (mySwitch.isOn) {
        NSLog(@"on");
    }  else{
        NSLog(@"off");
    }
}


//UITextView //文本
-(void)viewDidLoad{
    [super viewDidLoad];
    
    self.btn.hidden = YES;
    
    [self createTextView];
}

-(void)createTextView{
    UITextView *textView = [[UITextView alloc]initWithFrame:CGRectMake(50, 100, 200, 100)];
    
    [self.view addSubview:textView   ];
}

//UIAlertController //警报管理
- (void)btnClicked {
    
    UIAlertController *alertCtrl = [UIAlertController alertControllerWithTitle:@"删除" message:@"是否确定要删除该数据" preferredStyle:UIAlertControllerStyleActionSheet];
    UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:nil ];
    UIAlertAction *deleteAction = [UIAlertAction actionWithTitle:@"删除" style:UIAlertActionStyleDestructive handler:^(UIAlertAction * _Nonnull action) {
        NSLog(@"具体的删除数据的代码");
    }];
    
    [alertCtrl addAction:cancelAction];
    [alertCtrl addAction:deleteAction];
    
    [self presentViewController:alertCtrl animated:YES completion:nil];
    
}


- (void)btnClicked3 {
    
    UIAlertController *alertCtrl = [ UIAlertController alertControllerWithTitle:@"警告" message:@"需要输入用户名和密码" preferredStyle:UIAlertControllerStyleAlert];
    // 添加文本框
    [alertCtrl addTextFieldWithConfigurationHandler:^(UITextField * _Nonnull textField) {
        // 可以对文本框进行设置
       textField.placeholder = @"用户名";
    }];
    
    [alertCtrl addTextFieldWithConfigurationHandler:^(UITextField * _Nonnull textField) {
        textField.placeholder = @"密码";
        textField.secureTextEntry = YES;
        
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(pwdTextChanged) name:UITextFieldTextDidChangeNotification object:textField];
    }];
    
    // 添加一个动作，就是一个按钮
    UIAlertAction *action2 = [UIAlertAction actionWithTitle:@"登录" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
        // 用户点击这个按钮的操作
        NSLog(@"用户名：%@, 密码：%@", alertCtrl.textFields[0].text , alertCtrl.textFields[1].text );
    }];
    action2.enabled = NO;
    [alertCtrl addAction:action2];
    
    // 弹出提示信息框
    [self presentViewController:alertCtrl animated:YES completion:nil];
    
}

-(void)pwdTextChanged{
    // 取得弹出的UIAlertController对象
    UIAlertController *alertCtrl = (UIAlertController *)  self.presentedViewController;
    if (alertCtrl) {
        UIAlertAction *loginAction = alertCtrl.actions.firstObject;
        loginAction.enabled = YES;
    }
    
}

- (void)btnClicked2 {
    
    UIAlertController *alertCtrl = [ UIAlertController alertControllerWithTitle:@"警告" message:@"电量低" preferredStyle:UIAlertControllerStyleAlert];
    
    UIAlertAction *action1 = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:nil];
    UIAlertAction *action2 = [UIAlertAction actionWithTitle:@"知道了" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
        NSLog(@"知道了");
    }];
    [alertCtrl addAction:action1];
    [alertCtrl addAction:action2];
    
    [self presentViewController:alertCtrl animated:YES completion:nil];
    
}