Android 如何设置进度条颜色？

我正在尝试为圆形进度条设置不同的颜色。下面是我的代码

<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >

    <item android:id="@android:id/secondaryProgress">
        <clip>
            <shape>
                <corners android:radius="5dip" />

                <solid android:color="@color/purple" />
            </shape>
        </clip>

        <color android:color="@color/purple" />
    </item>
    <item android:id="@android:id/progress">
        <clip>
            <shape>
                <corners android:radius="5dip" />

                <solid android:color="@color/purple" />
            </shape>
        </clip>

        <color android:color="@color/purple" />
    </item>

</layer-list>

---

但这是行不通的。进度条仍显示为灰色。

---

请帮助我，我哪里出错了？

在res目录中创建一个xml文件夹，并将progress.xml文件放入其中

progress.xml

    <?xml version="1.0" encoding="utf-8"?>
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
    android:pivotX="50%" android:pivotY="50%" android:fromDegrees="0"
    android:toDegrees="360">
    <shape android:shape="ring" android:innerRadiusRatio="3"
        android:thicknessRatio="8" android:useLevel="false">

        <size android:width="76dip" android:height="76dip" />
        <gradient android:type="sweep" android:useLevel="false"
            android:startColor="#447a29" 
            android:endColor="#447a29"
            android:angle="0"
             />
    </shape>
</rotate> 

根据您的选择设置startColor和endColor

现在在progressbar的backgound中设置progress.xml

像这样

<ProgressBar
  android:id="@+id/ProgressBar01" 
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:background ="@xml/progress">

---

在res->drawable文件夹中创建一个名为customprogressbar.XML的XML文件：

CustomProgressBarColor.xml

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">

    <!-- Define the background properties like color etc -->
    <item android:id="@android:id/background">
    <shape>
        <gradient
                android:startColor="#000001"
                android:centerColor="#0b131e"
                android:centerY="1.0"
                android:endColor="#0d1522"
                android:angle="270"
        />
    </shape>
   </item>

  <!-- Define the progress properties like start color, end color etc -->
  <item android:id="@android:id/progress">
    <clip>
        <shape>
            <gradient
                android:startColor="#007A00"
                android:centerColor="#007A00"
                android:centerY="1.0"
                android:endColor="#06101d"
                android:angle="270"
            />
        </shape>
    </clip>
    </item>
</layer-list> 

检查这个答案。

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">

    <!-- Define the background properties like color etc -->
    <item android:id="@android:id/background">
    <shape>
        <gradient
                android:startColor="#000001"
                android:centerColor="#0b131e"
                android:centerY="1.0"
                android:endColor="#0d1522"
                android:angle="270"
        />
    </shape>
   </item>

  <!-- Define the progress properties like start color, end color etc -->
  <item android:id="@android:id/progress">
    <clip>
        <shape>
            <gradient
                android:startColor="#007A00"
                android:centerColor="#007A00"
                android:centerY="1.0"
                android:endColor="#06101d"
                android:angle="270"
            />
        </shape>
    </clip>
    </item>
</layer-list> 

<ProgressBar
    android:id="@+id/progress1"
    style="?android:attr/progressBarStyleHorizontal"
    android:progressDrawable="@drawable/custom_progressbar"         
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

Drawable draw=res.getDrawable(R.drawable.customprogressbarcolour);
    progressBar.setProgressDrawable(draw);