Converts a drawable to a bitmap image. - Android Graphics

Android examples for Graphics:Drawable

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Description

Converts a drawable to a bitmap image.

Demo Code


import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;

public class Main {
  /**/*from  www . ja  v  a 2  s .c o m*/
   * Converts a drawable to a bitmap image.
   * 
   * @param drawable
   *          instance of a drawable resource.
   * @return bitmap image.
   */
  public static Bitmap drawableToBitmap(Drawable drawable) {
    if (drawable instanceof BitmapDrawable) {
      return ((BitmapDrawable) drawable).getBitmap();
    }

    // We ask for the bounds if they have been set as they would be most
    // correct, then we check we are > 0
    final int width = !drawable.getBounds().isEmpty() ? drawable.getBounds().width() : drawable.getIntrinsicWidth();

    final int height = !drawable.getBounds().isEmpty() ? drawable.getBounds().height() : drawable.getIntrinsicHeight();

    // Now we check we are > 0
    final Bitmap bitmap = Bitmap.createBitmap(width <= 0 ? 1 : width, height <= 0 ? 1 : height,
        Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
    drawable.draw(canvas);

    return bitmap;
  }
}

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