iOS中自定义步骤进度条

转载地址：http://www.tuicool.com/articles/jEnyQvv

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。

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

#import 

@interface StepProgressView : UIView

@property (nonatomic,assign) NSInteger stepIndex;

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

@end

#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=_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;