Android学习札记6：ProgressBar圆形进度条的颜色设置

<ProgressBar
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:indeterminateDrawable="@drawable/progressbar_red" />

<?xml version="1.0" encoding="utf-8"?>
<animated-rotate
xmlns:android="http://schemas.android.com/apk/res/android"
android:fromDegrees="0"
android:toDegrees="360"
android:pivotX="50%"
android:pivotY="50%"
>
<shape
android:shape="ring"
android:innerRadiusRatio="4"
android:thicknessRatio="8"
android:useLevel="false"
>
<gradient
android:type="sweep"
android:useLevel="false"
android:startColor="#FF0000"
android:centerColor="#FF5555"
android:endColor="#FBD3D0"
android:centerY="0.50" />
</shape>
</animated-rotate>