iOS如何自定义步骤进度条实例详解

//
// 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