Android实现文件上传和下载倒计时功能的圆形进度条

 step1. Add it in your root build.gradle at the end of repositories:
   allprojects {
    repositories {
     ...
     maven { url 'https://jitpack.io' }
    }
   }

 step2. Add the dependency
   dependencies {
   compile 'com.github.yanjiabin:ExtendsRingPrigressBar:1.1.1'
   }

in your xml
  <com.github.yanjiabin.extendsringprogressbarlib.RingProgressBar
   android:layout_gravity="center"
   android:id="@+id/progress_bar_1"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_centerInParent="true"
   android:layout_alignParentTop="true"
   app:max="100"      最大进度
   app:ringColor="@color/colorPrimary" 圆环的颜色
   app:ringProgressColor="@color/colorPrimaryDark" 进度条的颜色
   app:ringWidth="3dp" 圆环的宽度
   app:style="FILL" 填充状态和描边状态 还有一种是STROKE
   app:textColor="@color/colorPrimary" 显示文本的颜色
   app:textIsShow="true" 是否显示文本
   app:textSize="16sp" /