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iOS自定义水平滚动条、进度条

转载 作者：qq735679552 更新时间：2022-09-28 22:32:09 29 4
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ios自定义水平滚动条、进度条，继承uiview，可点击轨道、滑动滑块交互.

先看一下效果图:

iOS自定义水平滚动条、进度条

简单说一下逻辑，新建一个继承uiview的类，分别给轨道、滑块添加uitapgesturerecognizer点击、uipangesturerecognizer滑动手势。获取偏移量，计算控件位置，刷新视图.

下面贴上核心代码:

显示视图，在控制器调用代码:

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hwslider *slider = [[hwslider alloc] initwithframe:cgrectmake(10, 50, 300, 75)];
[self.view addsubview:slider];

hwslider:

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#import <uikit/uikit.h>
 
@interface hwslider : uiview
 
@property (nonatomic, assign) nsinteger score;
 
@end
 
/*** ---------------分割线--------------- ***/
 
#import "hwslider.h"
#import "uiview+additions.h"
 
@interface hwslider ()
 
@property (nonatomic, weak) uiimageview *bubbleimage;
@property (nonatomic, weak) uiimageview *arrowimage;
@property (nonatomic, weak) uilabel *scorelabel;
@property (nonatomic, weak) uilabel *levellable;
@property (nonatomic, weak) uiview *trackview;
@property (nonatomic, weak) uiimageview *thumb;
 
@end
 
@implementation hwslider
 
- (instancetype)initwithframe:(cgrect)frame
{
  if (self = [super initwithframe:frame]) {
   _score = 10;
   self.backgroundcolor = [uicolor whitecolor];
  
   //气泡图片
   uiimageview *bubbleimage = [[uiimageview alloc] initwithframe:cgrectmake(self.bounds.size.width - 70, 0, 74, 35)];
   [bubbleimage setimage:[uiimage imagenamed:@ "alert_teachereva_bubbleimage" ]];
   [self addsubview:bubbleimage];
   _bubbleimage = bubbleimage;
  
   //分数标签
   uilabel *scorelabel = [[uilabel alloc] initwithframe:cgrectmake(self.bounds.size.width - 71.5, 0, 74, 28)];
   scorelabel.text = @ "10" ;
   scorelabel.textcolor = [uicolor blackcolor];
   scorelabel.font = [uifont systemfontofsize:15.f];
   scorelabel.textalignment = nstextalignmentcenter;
   [self addsubview:scorelabel];
   _scorelabel = scorelabel;
  
   //气泡箭头
   uiimageview *arrowimage = [[uiimageview alloc] initwithframe:cgrectmake(self.bounds.size.width - 16.5, 26, 13, 13)];
   [arrowimage setimage:[uiimage imagenamed:@ "alert_teachereva_arrowimage" ]];
   [self addsubview:arrowimage];
   _arrowimage = arrowimage;
  
   //轨道可点击视图（轨道只设置了5pt，通过这个视图增加以下点击区域）
   uiview *tapview = [[uiview alloc] initwithframe:cgrectmake(0, 34, self.bounds.size.width, 20)];
   [tapview addgesturerecognizer:[[uitapgesturerecognizer alloc] initwithtarget:self action:@selector(handletap:)]];
   [self addsubview:tapview];
  
   //轨道背景
   uiview *backview = [[uiview alloc] initwithframe:cgrectmake(0, 7.5, self.bounds.size.width, 5)];
   backview.backgroundcolor = [uicolor graycolor];
   backview.layer.cornerradius = 2.5f;
   backview.layer.maskstobounds = yes;
   [tapview addsubview:backview];
  
   //轨道前景
   uiview *trackview = [[uiview alloc] initwithframe:cgrectmake(1.5, 9, self.bounds.size.width - 3, 2)];
   trackview.backgroundcolor = [uicolor greencolor];
   trackview.layer.cornerradius = 1.f;
   trackview.layer.maskstobounds = yes;
   [tapview addsubview:trackview];
   _trackview = trackview;
  
   //滑块
   uiimageview *thumb = [[uiimageview alloc] initwithframe:cgrectmake(self.bounds.size.width - 20, 34, 20, 20)];
   [thumb setimage:[uiimage imagenamed:@ "alert_teachereva_sliderimg" ]];
   thumb.userinteractionenabled = yes;
   thumb.contentmode = uiviewcontentmodecenter;
   [thumb addgesturerecognizer:[[uipangesturerecognizer alloc] initwithtarget:self action:@selector(handlepan:)]];
   [self addsubview:thumb];
   _thumb = thumb;
  
   //级别标签
   uilabel *levellable = [[uilabel alloc] initwithframe:cgrectmake(0, cgrectgetmaxy(thumb.frame) + 7, self.bounds.size.width, 13)];
   levellable.text = @ "非常满意" ;
   levellable.textcolor = [uicolor blackcolor];
   levellable.font = [uifont systemfontofsize:13.f];
   levellable.textalignment = nstextalignmentcenter;
   [self addsubview:levellable];
   _levellable = levellable;
  }
 
  return self;
}
 
- ( void )setscore:(nsinteger)score
{
  _score = score;
 
  //刷新视图
  [self reloadviewwiththumbceneterx:score / 10.0 * self.bounds.size.width];
}
 
//点击滑动条
- ( void )handletap:(uitapgesturerecognizer *)sender
{
  //刷新视图
  [self reloadviewwiththumbceneterx:[sender locationinview:self].x];
}
 
//滑动滑块
- ( void )handlepan:(uipangesturerecognizer *)sender
{
  //获取偏移量
  cgfloat movex = [sender translationinview:self].x;
 
  //重置偏移量，避免下次获取到的是原基础的增量
  [sender settranslation:cgpointmake(0, 0) inview:self];
 
  //计算当前中心值
  cgfloat centerx = _thumb.centerx + movex;
 
  //防止瞬间大偏移量滑动影响显示效果
  if (centerx < 10) centerx = 10;
  if (centerx > self.bounds.size.width - 10) centerx = self.bounds.size.width - 10;
 
  //刷新视图
  [self reloadviewwiththumbceneterx:centerx];
}
 
- ( void )reloadviewwiththumbceneterx:(cgfloat)thumbceneterx
{
  //更新轨道前景色
  _trackview.framewidth = thumbceneterx;
 
  //更新滑块位置
  _thumb.centerx = thumbceneterx;
  if (_thumb.centerx < 10) {
   _thumb.centerx = 10;
  } else if (_thumb.centerx > self.bounds.size.width - 10) {
   _thumb.centerx = self.bounds.size.width - 10;
  }
 
  //更新箭头位置
  _arrowimage.centerx = _thumb.centerx;
 
  //更新气泡标签位置（气泡图片宽度74，实际内容宽度66）
  _bubbleimage.centerx = _thumb.centerx;
  if (_bubbleimage.centerx < 33) {
   _bubbleimage.centerx = 33;
  } else if (_bubbleimage.centerx > self.bounds.size.width - 33) {
   _bubbleimage.centerx = self.bounds.size.width - 33;
  }
 
  //更新分数标签位置
  _scorelabel.centerx = _bubbleimage.centerx;
 
  //分数，四舍五入取整
  _score = round(thumbceneterx / self.bounds.size.width * 10);
 
  //更新标签内容
  _scorelabel.text = [nsstring stringwithformat:@ "%ld" , _score];
  if (_score <= 3) {
   _levellable.text = @ "极不满意" ;
  } else if (_score <= 5) {
   _levellable.text = @ "不满意" ;
  } else if (_score <= 7) {
   _levellable.text = @ "一般" ;
  } else if (_score <= 9) {
   _levellable.text = @ "满意" ;
  } else if (_score == 10) {
   _levellable.text = @ "非常满意" ;
  }
}
 
@end

demo 下载链接 。

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以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我.

原文链接：https://blog.csdn.net/hero_wqb/article/details/78965106 。

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