TextView dynamically changes the background color of Drawble.

Mar 18, 202379

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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 /drawable/t_shape.xml and then get the Drawable using Drawable.createFromXml(). Finally, use setColorFilter() and setBackground() to apply the color change to the Drawable.

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

Create a shape in /drawable/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, the color needs to be dynamically changed.

First, 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);