iOS——UIProgressView在工程中的简单应用

UIProgressView顾名思义用来显示进度的，如音乐，视频的播放进度，和文件的上传下载进度等。UIProgressView也是常用的控件。本文只介绍最简单的布局使用。

<pre>
初始化方法
-(instancetype)initWithFrame:(CGRect)frame ;

• (nullable instancetype)initWithCoder:(NSCoder *)aDecoder ;
• (instancetype)initWithProgressViewStyle:(UIProgressViewStyle)style; 这个最常用
  @property(nonatomic) UIProgressViewStyle progressViewStyle;
  @property(nonatomic) float progress;

进度条颜色
@property(nonatomic, strong, nullable) UIColor* progressTintColor;
设置背景颜色
@property(nonatomic, strong, nullable) UIColor* trackTintColor;
设置进度条
@property(nonatomic, strong, nullable) UIImage* progressImage;
设置背景图片
@property(nonatomic, strong, nullable) UIImage* trackImage;
是否使用动画更改进度条的值
— (void)setProgress:(float)progress animated:(BOOL)animated);
@property(nonatomic, strong, nullable) NSProgress *observedProgress;
</pre>

本Demo并没有使用navigationBar所以，全部使用了自定义View。界面拆分如下

界面拆分

一、今天的主角：UIProgressView

我们可以从图中看中，这个页面中需要使用3个一样progressView。所以我们将这个可以抽取成ProgressView类。
ProgressView类需求：
1.1 具有两个Lable，一个ProgressView
1.2 需要对外提供赋值的方法。

直接上代码

ProgressView.h

#import <UIKit/UIKit.h>
#import "Masonry.h"

@interface ProgressView : UIView

@property (nonatomic, strong) UILabel * progressTitleLabel;
@property (nonatomic, strong) UILabel * progressAccountLabel;
@property (nonatomic, strong) UIProgressView * rateProgressView;

+ (ProgressView *)progressTitle:(NSString *)title progressAccount:(int)account rateProgress:(CGFloat)rate rateProgressColor:(UIColor *)progressColor;

@end

ProgressView.m
#import "ProgressView.h"

@implementation ProgressView

- (instancetype)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        [self p_setupViews];
    }
    return self;
}

- (void)p_setupViews
{
    self.progressTitleLabel = [[UILabel alloc] init];

    self.progressTitleLabel.textAlignment = NSTextAlignmentLeft;
    self.progressTitleLabel.textColor = [UIColor colorWithRed:166/255.0 green:166/255.0 blue:166/255.0 alpha:1];
    [self addSubview:self.progressTitleLabel];

    self.progressAccountLabel =  [[UILabel alloc] init];
    self.progressAccountLabel.textColor = [UIColor colorWithRed:166/255.0 green:166/255.0 blue:166/255.0 alpha:1];
    self.progressAccountLabel.textAlignment = NSTextAlignmentRight;
    [self addSubview:self.progressAccountLabel];

    // 进度条初始化
    self.rateProgressView = [[UIProgressView alloc] initWithProgressViewStyle:UIProgressViewStyleDefault];
    // 进度条的底色
    self.rateProgressView.trackTintColor = [UIColor colorWithRed:199/255.0 green:198/255.0 blue:198/255.0 alpha:1];
    self.rateProgressView.layer.masksToBounds = YES;
    self.rateProgressView.layer.cornerRadius = 1;

    [self addSubview:self.rateProgressView];

}

- (void)layoutSubviews
{

    [super layoutSubviews];
    [self.progressTitleLabel mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.left.equalTo(self);
        make.width.mas_equalTo(200);
        make.height.mas_equalTo(30);
    
    }];
    [self.progressAccountLabel mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.right.equalTo(self);
        make.width.mas_equalTo(100);
        make.height.mas_equalTo(30);
    }];
    [self.rateProgressView mas_makeConstraints:^(MASConstraintMaker *make) {
    
        make.left.right.equalTo(self);
        make.top.equalTo(self.progressTitleLabel.mas_bottom).offset(5);
        make.height.mas_equalTo(5);
    }];
}

+ (ProgressView *)progressTitle:(NSString *)title progressAccount:(int)account rateProgress:(CGFloat)rate rateProgressColor:(UIColor *)progressColor
{
    ProgressView * progressView = [[ProgressView alloc] init];
    progressView.progressTitleLabel.text = title;
    progressView.progressAccountLabel.text = [NSString  stringWithFormat:@"%d",account];
    // 进度条的进度
    progressView.rateProgressView.progress = rate;
    // 进度条的颜色
    progressView.rateProgressView.progressTintColor = progressColor;
    return progressView;
}

具体使用
github地址：https://github.com/zhangyanxiao/IDCameraDemo----demo

在这个末尾纪念一下，一只傻子！
在之前使用简书、贴代码的时候，好像是7个月还是10个月里，一直在每行代码前tab+tab,按了不知道多少的tab和复制粘贴。刚刚，用来一下"pre",好嘛！😢！知识就是力量。

代码格式粘贴

好吧，我承认，我就是那只傻子！