so i have a Layer-List with an Item with a shape and a solid color. Now i want to change this color inside my code.
I know this question is a few months old but I was able to get a level-list working with a progress bar. The trick is to assign your levels values between 0 and 10,000 In my particular example I had 3 levels (red/yellow/green) used to represent battery life.
Here is how I did it:
res/drawable/progress_horizontal_yellow.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@android:id/background">
<shape>
<corners android:radius="5dip" />
<gradient
android:startColor="#ff9d9e9d"
android:centerColor="#ff5a5d5a"
android:centerY="0.75"
android:endColor="#ff747674"
android:angle="270"
/>
</shape>
</item>
<item android:id="@android:id/secondaryProgress">
<clip>
<shape>
<corners android:radius="5dip" />
<gradient
android:startColor="#80ffd300"
android:centerColor="#80ffb600"
android:centerY="0.75"
android:endColor="#a0ffcb00"
android:angle="270"
/>
</shape>
</clip>
</item>
<item android:id="@android:id/progress">
<clip>
<shape>
<corners android:radius="5dip" />
<gradient
android:startColor="#ffffd300"
android:centerColor="#ffffb600"
android:centerY="0.75"
android:endColor="#ffffcb00"
android:angle="270"
/>
</shape>
</clip>
</item>
</layer-list>
res/drawable/progress_horizontal_red.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@android:id/background">
<shape>
<corners android:radius="5dip" />
<gradient
android:startColor="#ff9d9e9d"
android:centerColor="#ff5a5d5a"
android:centerY="0.75"
android:endColor="#ff747674"
android:angle="270"
/>
</shape>
</item>
<item android:id="@android:id/secondaryProgress">
<clip>
<shape>
<corners android:radius="5dip" />
<gradient
android:startColor="#80ffd300"
android:centerColor="#80ffb600"
android:centerY="0.75"
android:endColor="#a0ffcb00"
android:angle="270"
/>
</shape>
</clip>
</item>
<item android:id="@android:id/progress">
<clip>
<shape>
<corners android:radius="5dip" />
<gradient
android:startColor="#ffff0000"
android:centerColor="#ff990000"
android:centerY="0.75"
android:endColor="#ffff0000"
android:angle="270"
/>
</shape>
</clip>
</item>
</layer-list>
res/drawable/progress_horizontal_green.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@android:id/background">
<shape>
<corners android:radius="5dip" />
<gradient
android:startColor="#ff9d9e9d"
android:centerColor="#ff5a5d5a"
android:centerY="0.75"
android:endColor="#ff747674"
android:angle="270"
/>
</shape>
</item>
<item android:id="@android:id/secondaryProgress">
<clip>
<shape>
<corners android:radius="5dip" />
<gradient
android:startColor="#80ffd300"
android:centerColor="#80ffb600"
android:centerY="0.75"
android:endColor="#a0ffcb00"
android:angle="270"
/>
</shape>
</clip>
</item>
<item android:id="@android:id/progress">
<clip>
<shape>
<corners android:radius="5dip" />
<gradient
android:startColor="#ff00ff00"
android:centerColor="#ff009900"
android:centerY="0.75"
android:endColor="#ff00ff00"
android:angle="270"
/>
</shape>
</clip>
</item>
</layer-list>
res/drawable/battery_charge_fill.xml
<?xml version="1.0" encoding="utf-8"?>
<level-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:maxLevel="2999" android:drawable="@drawable/progress_horizontal_red" />
<item android:maxLevel="4999" android:drawable="@drawable/progress_horizontal_yellow" />
<item android:maxLevel="10000" android:drawable="@drawable/progress_horizontal_green" />
</level-list>
Then in the layout file my progress bar declaration was like this:
<ProgressBar android:max="100"
android:progress="60"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/BatteryLevelProgress"
style="@android:style/Widget.ProgressBar.Horizontal"
android:progressDrawable="@drawable/battery_charge_fill" />
Then in java:
//progress is between 0 and 100 so set level of drawable to progress * 100
Drawable batteryProgressD = batteryProgressBar.getProgressDrawable();
batteryProgressD.setLevel(progress*100);
batteryProgressBar.setProgress(progress);