自定义条形ProgressView

   <p>进度条在iOS开发中很常见的，我在项目开发中也写过好多进度条，有好多种类的，条形，圆形等，今天给大家总结一种条形的开发进度条。</p>    <p><strong>简单思路：</strong></p>    <p>1.自定义进度条先继承UIView 建立一个CustomBarProgressView<br> 2.在.H文件中外漏的方法《开始的方法》《初始化的方法》<br> 3.在.M文件中 利用定时器改变位置 实现进度条</p>    <p><strong>效果图</strong></p>    <p style="text-align:center"><img src="https://simg.open-open.com/show/dd3a60eca1b7f93f2060c448fe3028d4.gif"></p>    <p style="text-align:center">1.gif</p>    <p><strong>部分代码</strong></p>    <pre>  <code class="language-objectivec">-(instancetype)initWithFrame:(CGRect)frame withStartNum:(CGFloat)startNum withEndNum:(CGFloat)endNum withSignNum:(CGFloat)signNum withTime:(CGFloat)time{      if (self = [super initWithFrame:frame]) {            self.startNum =  startNum;          self.endNum = endNum;          self.signNum = signNum;            if(time == 0){              self.time  = 0.1;          }else{              self.time = time;          }            [self setUpSubViews];      }      return self;  }    - (void)setUpSubViews  {      UIView *backView = [[UIView alloc] init];      backView.backgroundColor =BoomViewColor;      backView.layer.cornerRadius = CornerRadius;      backView.layer.masksToBounds = YES;      [self addSubview:backView];      self.backView = backView;        UIView *fontView = [[UIView alloc] init];      fontView.backgroundColor = UpViewColor;      fontView.layer.cornerRadius = CornerRadius;      fontView.layer.masksToBounds = YES;      [self addSubview:fontView];      self.fontView = fontView;    }    -(void)progressViewStart{      if (self.timer == nil) {          dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{              self.timer = [NSTimer scheduledTimerWithTimeInterval:self.time target:self selector:@selector(changeProgressViewFrame:) userInfo:nil repeats:YES];              [[NSRunLoop mainRunLoop] addTimer:self.timer forMode:NSRunLoopCommonModes];          });        }  }    -(void)changeProgressViewFrame:(NSTimer *)timer{        //位置计算      CGFloat signProgress = (self.signNum - self.startNum) / (self.endNum - self.startNum);     NSLog(@"==>>>%f",self.progress);      if (self.progress >= signProgress){          [self.timer invalidate];          self.timer = nil;          return;      }        self.progress += 0.01;      [self setNeedsLayout];    }    -(void)layoutSubviews{      [super layoutSubviews];      NSLog(@"==>>>%f",self.progress);      self.backView.frame = self.bounds;      self.fontView.frame = self.bounds;      self.fontView.width =  self.width * self.progress;    }</code></pre>    <p><strong>PS:可以自己增加 进度条文字等修改大小 样式</strong></p>    <p> </p>    <p> </p>    <p>来自：http://www.jianshu.com/p/f35c5809c41e</p>    <p> </p>