How to Convert a Drawable to a Bitmap in Android

How to Convert a Drawable to a Bitmap in Android

22 May 2024 Stephan Petzl Leave a comment Tech-Help

Converting a Drawable to a Bitmap is a common task in Android development, especially when dealing with custom graphics or downloaded images. This guide provides a comprehensive solution to help you achieve this conversion effectively.

Why Convert Drawable to Bitmap?

Certain Android APIs, such as wallpaper functions and image processing libraries, work exclusively with Bitmap objects. If you have a Drawable that you need to use with these APIs, converting it to a Bitmap is essential.

Solution: Converting Drawable to Bitmap

Below is a practical method to convert a Drawable to a Bitmap. This method takes into account various types of Drawable objects and ensures the conversion is handled correctly.

public static Bitmap drawableToBitmap(Drawable drawable) {
    if (drawable instanceof BitmapDrawable) {
        return ((BitmapDrawable)drawable).getBitmap();

    int width = drawable.getIntrinsicWidth();
    width = width > 0 ? width : 1;
    int height = drawable.getIntrinsicHeight();
    height = height > 0 ? height : 1;

    Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());

    return bitmap;

Example Usage

Here is an example of how you can use the drawableToBitmap method in your Android application:

Drawable drawable = getResources().getDrawable(R.drawable.example_drawable);
Bitmap bitmap = drawableToBitmap(drawable);

// Now you can use the bitmap object as needed

Additional Resources

For more detailed information and other related topics, check out our comprehensive guides:

Streamlining Your Testing with Repeato

Converting a Drawable to a Bitmap is just one of the many tasks Android developers handle. Ensuring these and other functionalities work flawlessly is crucial. This is where Repeato comes in. Repeato is a no-code test automation tool for iOS and Android, enabling you to create, run, and maintain automated tests quickly and effectively.

With Repeato, you can delegate test automation tasks to non-technical colleagues, freeing up your time to focus on creating a great product. Learn more about how Repeato can enhance your development workflow by visiting our documentation.

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