TextView Dynamically Change the Background Color of Drawables

Mar 18, 202336

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This post is translated from Chinese into English through AI.View Original

AI-generated summary

To dynamically change the color of a Drawable, create a shape in a XML file and then retrieve the Drawable using the Drawable.createFromXml() method. After that, use the setColorFilter() method to change the color and set the modified Drawable as the background of a view.

When encountering the need to dynamically change the color of a Drawable, record the following:

Create a shape in /drawble/t_shape.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="@color/darkBG"></solid>
    <corners android:radius="4dp"/>
</shape>

Then, you need to dynamically change the color.

First, you need to obtain the Drawable.

Drawable tagShapeDrawable = Drawable.createFromXml(context.getResources(), context.getResources().getXml(R.drawable.tag_shape));

Then,

tagShapeDrawable.setColorFilter(color, PorterDuff.Mode.SRC_IN);
view.setBackground(tagShapeDrawable);