zoukankan      html  css  js  c++  java
  • iOS.UIKit.04.UISwitch_UISegmentedControl

    一、案例介绍:两个开关保持一致;点击分段控制两个开关显示和隐藏;显示滑块的值;如图01

    图01图02图03

    二、案例步骤:

    1、选择Single View Aplication新建项目,取名cq.29.开关_滑块_分段控件,如图02。

    2、Main.storyboard如图03。

    3、CQ29ViewController.h

    》定义leftSwitch、rightSwitch、sliderValue,分别连线

    #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

    4、CQ29ViewController.m

    #pragma mark 保持两个开关同开同关
    - (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 显示滑块的值
    - (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;
    }
    
    //点击分段控件控制开关控件的隐藏或显示
    - (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;
        }
    }
  • 相关阅读:
    三列布局_左右绝对定位_中间适应
    三列布局_左右固定_中间自适应
    两列布局_左右二侧_绝对定位
    二列布局_左右固定_自己撑开父级块
    两列布局_右侧固定_左侧自适应
    两列布局_左侧固定_右侧自适应
    单列布局_宽度自适应_内容居中
    单列布局_上中下等宽
    聊一聊Unity协程背后的实现原理
    发火箭和做游戏有什么共通点?
  • 原文地址:https://www.cnblogs.com/cqchen/p/3764481.html
Copyright © 2011-2022 走看看