android 自定义圆形进度条

一、通过动画实现

定义res/anim/loading.xml如下:

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  1. <?xml version=”1.0″ encoding=”UTF-8″?>
  2. <animation-list android:oneshot=”false”
  3. xmlns:android=”http://schemas.android.com/apk/res/android”>
  4.   <item android:duration=”150″ android:drawable=”@drawable/loading_01″ />
  5.   <item android:duration=”150″ android:drawable=”@drawable/loading_02″ />
  6.   <item android:duration=”150″ android:drawable=”@drawable/loading_03″ />
  7.   <item android:duration=”150″ android:drawable=”@drawable/loading_04″ />
  8.   <item android:duration=”150″ android:drawable=”@drawable/loading_05″ />
  9.   <item android:duration=”150″ android:drawable=”@drawable/loading_06″ />
  10.   <item android:duration=”150″ android:drawable=”@drawable/loading_07″ />
  11. </animation-list>

二、通过自定义颜色实现

定义res/drawable/progress_small.xml如下:

 

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  1. <?xml version=”1.0″ encoding=”utf-8″?>
  2. <rotate xmlns:android=”http://schemas.android.com/apk/res/android”
  3.     android:fromDegrees=”0″
  4.     android:pivotX=”50%”
  5.     android:pivotY=”50%”
  6.     android:toDegrees=”360″ >
  7.     <shape
  8.         android:innerRadiusRatio=”3″
  9.         android:shape=”ring”
  10.         android:thicknessRatio=”8″
  11.         android:useLevel=”false” >
  12.         <gradient
  13.             android:centerColor=”#FFFFFF”
  14.             android:centerY=”0.50″
  15.             android:endColor=”#1E90FF”
  16.             android:startColor=”#000000″
  17.             android:type=”sweep”
  18.             android:useLevel=”false” />
  19.     </shape>
  20. </rotate>

三、使用一张图片进行自定义
定义res/drawable/progress_small.xml如下:

 

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  1. <rotate xmlns:android=”http://schemas.android.com/apk/res/android”
  2.     android:drawable=”@drawable/spinner_black_16″
  3.     android:pivotX=”50%”
  4.     android:pivotY=”50%”
  5.     android:fromDegrees=”0″
  6.     android:toDegrees=”360″ />

使用方法都一样, 如下:

 

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  1. <ProgressBar
  2.     android:layout_width=”wrap_content”
  3.     android:layout_height=”wrap_content”
  4.     android:indeterminateDrawable=”@drawable/progress_small”/>

 

也可以根据需要通过设置style来设置其大小! 一般只有使用默认的ProgrressBar的时候采用。对于上述三种自定义的方式,建议修改直接修改图片大小,或者shape;

 

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  1. <ProgressBar
  2.     android:layout_width=”wrap_content”
  3.     android:layout_height=”wrap_content”
  4.     android:layout_centerInParent=”true”
  5.     style=”?android:attr/progressBarStyleSmall”
  6.     android:indeterminateDrawable=”@drawable/progress_small”/>

设置成progressBarStyleSmall后,图标变小。

设置成progressBarStyleLarge后,图标变大

   

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