开关控件、滑块控件和分段控件

开关控件、滑块控件和分段控件都是UIControl的子类，通过下面的例子进行简单的认识：

//

//  ViewController.h

//  1005Switch_Slider_SegmentedControlSample

//

//  Created by weibiao on 15-10-5.

//  Copyright (c) 2015年 weibo. All rights reserved.

//

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController

@property (weak, nonatomic) IBOutlet UISwitch *leftSwitch;

@property (weak, nonatomic) IBOutlet UISwitch *rightSwitch;

- (IBAction)switchValueChanged:(id)sender;

@property (weak, nonatomic) IBOutlet UILabel *sliderValue;

- (IBAction)sliderValueChanged:(UISlider *)sender;

- (IBAction)touchDown:(UISegmentedControl *)sender;

@end

//

//  ViewController.m

//  1005Switch_Slider_SegmentedControlSample

//

//  Created by weibiao on 15-10-5.

//  Copyright (c) 2015年 weibiao. All rights reserved.

//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

- (IBAction)switchValueChanged:(id)sender {

    UISwitch *witch = (UISwitch *)sender;

    BOOL setting = witch.isOn;

    [self.leftSwitch setOn:setting animated:YES];

    [self.rightSwitch setOn:setting animated:YES];

}

- (IBAction)sliderValueChanged:(UISlider *)sender {

    self.sliderValue.text = [NSString stringWithFormat:@"%d",(int)(sender.value + 0.5f)];

}

- (IBAction)touchDown:(UISegmentedControl *)sender {

    if (self.leftSwitch.hidden == YES) {

        self.rightSwitch.hidden = NO;

        self.leftSwitch.hidden = NO;

    } else {

        self.rightSwitch.hidden = YES;

        self.leftSwitch.hidden = YES;

    }

}

@end

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