iOS.UIKit.04.UISwitch_UISegmentedControl

1、案例介紹：兩個開關保持一致；點擊分段控制兩個開關顯示和隱藏；顯示滑塊的值；如圖01

圖01圖02圖03

2、案例步驟：

一、選擇Single View Aplication新建項目，取名cq.29.開關_滑塊_分段控件，如圖02。

二、Main.storyboard如圖03。

三、CQ29ViewController.h

》定義leftSwitch、rightSwitch、sliderValue,分別連線

#import <UIKit/UIKit.h>

@interface CQ29ViewController : UIViewController

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

- (IBAction)sliderValueChanged:(id)sender;

- (IBAction)valueChanged:(id)sender;

-(IBAction)touchDown:(id)sender;
@end

四、CQ29ViewController.m

#pragma mark 保持兩個開關同開同關
- (IBAction)valueChanged:(id)sender
{
    UISwitch *witchSwitch = (UISwitch *)sender;
    BOOL setting = witchSwitch.isOn;
    [self.leftSwitch setOn:setting animated:YES];
    [self.rightSwitch setOn:setting animated:YES];
}
#pragma mark 顯示滑塊的值
- (IBAction)sliderValueChanged:(id)sender
{
    UISlider *slider = (UISlider *)sender;
    int progressAsInt = (int)(slider.value + 0.5f);
    NSString *newText = [[NSString alloc] initWithFormat:@"%d",progressAsInt];
    self.sliderValue.text = newText;
}

//點擊分段控件控制開關控件的隱藏或顯示
- (IBAction)touchDown:(id)sender {
    if (self.leftSwitch.hidden  == YES) {
        self.rightSwitch.hidden = NO;
        self.leftSwitch.hidden  = NO;
    }else{
        self.leftSwitch.hidden  = YES;
        self.rightSwitch.hidden = YES;
    }
}