iOS如何自定义步骤进度条实例详解

前言

最近新项目要做入驻功能,其中包括一个入住流程,类似登录或者注册流程如下图。

之前想着用自己绘图来做,可是又懒不想多写代码，所以就想着能不能用进度条来做。

实现方法如下：

1.用进度条做的首先要解决的是进度条的高度问题,可以通过仿射变换来扩大高度。

progressView.transform = CGAffineTransformMakeScale(1.0f,2.0f);

2.用进度条要设置进度progress要与按钮对应

通过步骤的索引来改变进度的值和按钮的图片。由于按钮的左右有间隔所以要注意-1、0和最后一个的progress值。

3.扩展

看有一些类似查公交、车站运行的APP有的可以点击站点，所以就用按钮来做，这样可以扩展。

4.代码

//
// StepProgressView.h
// CustomProgress
//
// Created by City--Online on 15/12/12.
// Copyright © 2015年 City--Online. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface StepProgressView : UIView

@property (nonatomic,assign) NSInteger stepIndex;

+(instancetype)progressViewFrame:(CGRect)frame withTitleArray:(NSArray *)titleArray;

@end

//
// StepProgressView.m
// CustomProgress
//
// Created by City--Online on 15/12/12.
// Copyright © 2015年 City--Online. All rights reserved.
//

#import "StepProgressView.h"

static const float imgBtnWidth=18;

@interface StepProgressView ()

@property (nonatomic,strong) UIProgressView *progressView;

//用UIButton防止以后有点击事件
@property (nonatomic,strong) NSMutableArray *imgBtnArray;

@end

@implementation StepProgressView

+(instancetype)progressViewFrame:(CGRect)frame withTitleArray:(NSArray *)titleArray
{
 StepProgressView *stepProgressView=[[StepProgressView alloc]initWithFrame:frame];
 //进度条
 stepProgressView.progressView=[[UIProgressView alloc]initWithFrame:CGRectMake(0, 5, frame.size.width, 10)];
 stepProgressView.progressView.progressViewStyle=UIProgressViewStyleBar;
 stepProgressView.progressView.transform = CGAffineTransformMakeScale(1.0f,2.0f);
 stepProgressView.progressView.progressTintColor=[UIColor redColor];
 stepProgressView.progressView.trackTintColor=[UIColor blueColor];
 stepProgressView.progressView.progress=0.5;
 [stepProgressView addSubview:stepProgressView.progressView];
 
 
 stepProgressView.imgBtnArray=[[NSMutableArray alloc]init];
 float _btnWidth=frame.size.width/(titleArray.count);
 for (int i=0; i<titleArray.count; i++) {
  //图片按钮
 UIButton *btn=[UIButton buttonWithType:UIButtonTypeCustom];
 [btn setImage:[UIImage imageNamed:@"0.png"] forState:UIControlStateNormal];
 [btn setImage:[UIImage imageNamed:@"1.png"] forState:UIControlStateSelected];
 btn.frame=CGRectMake(_btnWidth/2+_btnWidth*i-imgBtnWidth/2, 0, imgBtnWidth, imgBtnWidth);
 btn.selected=YES;
 
 [stepProgressView addSubview:btn];
 [stepProgressView.imgBtnArray addObject:btn];
 
 //文字
 UILabel *titleLabel=[[UILabel alloc]initWithFrame:CGRectMake(btn.center.x-_btnWidth/2, frame.size.height-20, _btnWidth, 20)];
 titleLabel.text=[titleArray objectAtIndex:i];
 [titleLabel setTextColor:[UIColor blackColor]];
 titleLabel.textAlignment=NSTextAlignmentCenter;
 titleLabel.font=[UIFont systemFontOfSize:18];
 [stepProgressView addSubview:titleLabel];
 }
 stepProgressView.stepIndex=-1;
 return stepProgressView;
 
}
-(void)setStepIndex:(NSInteger)stepIndex
{
// 默认为－1 小于－1为－1 大于总数为总数
 _stepIndex=stepIndex<-1?-1:stepIndex;
 _stepIndex=stepIndex >=_imgBtnArray.count-1?_imgBtnArray.count-1:stepIndex;
 float _btnWidth=self.bounds.size.width/(_imgBtnArray.count);
 for (int i=0; i<_imgBtnArray.count; i++) {
 UIButton *btn=[_imgBtnArray objectAtIndex:i];
 if (i<=_stepIndex) {
  btn.selected=YES;
 }
 else{
  btn.selected=NO;
 }
 }
 if (_stepIndex==-1) {
 self.progressView.progress=0.0;
 }
 else if (_stepIndex==_imgBtnArray.count-1)
 {
 self.progressView.progress=1.0;
 }
 else
 {
 self.progressView.progress=(0.5+_stepIndex)*_btnWidth/self.frame.size.width;
 }
}

@end

5.使用和效果

NSArray *arr=@[@"区宝时尚",@"区宝时尚",@"时尚",@"区宝时尚",@"时尚"];
 StepProgressView *stepView=[StepProgressView progressViewFrame:CGRectMake(0, 100, self.view.bounds.size.width, 60) withTitleArray:arr];
 stepView.stepIndex=2;
 [self.view addSubview:stepView];

补充:上面的代码有一个bug,例如stepIndex=－1时，_stepIndex=并不等－1，原来数组的count返回的是NSUInteger而stepIndex是NSInteger类型，所以需要强制转换一下

stepIndex=stepIndex<-1?-1:stepIndex;
 _stepIndex = stepIndex >= (NSInteger)(_imgBtnArray.count-1) ? _imgBtnArray.count-1:stepIndex;

总结：

频道导航

iOS如何自定义步骤进度条实例详解

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