iOS中怎么自定义步骤进度条

iOS中怎么自定义步骤进度条，针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。

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 &copy; 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 &copy; 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;

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