Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import android.graphics.Bitmap;

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

import java.io.ByteArrayOutputStream;

public class Main {
    /**
     * Create a byte array out of drawable
     *
     * @param drawable The source drawable
     * @return The byte array of source drawable
     */
    public static byte[] getByteArrayFromDrawable(Drawable drawable) {
        if (drawable == null) {
            return null;
        }

        Bitmap bitmap = getBitmapFromDrawable(drawable);
        if (bitmap == null) {
            return null;
        }
        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
        return stream.toByteArray();
    }

    /**
     * Extract an underlying bitmap from a drawable
     *
     * @param sourceDrawable The source drawable
     * @return The underlying bitmap
     */
    public static Bitmap getBitmapFromDrawable(Drawable sourceDrawable) {
        if (sourceDrawable == null) {
            return null;
        }

        if (sourceDrawable instanceof BitmapDrawable) {
            return ((BitmapDrawable) sourceDrawable).getBitmap();
        } else {
            //copying drawable object to not manipulate on the same reference
            Drawable.ConstantState constantState = sourceDrawable.getConstantState();
            if (constantState == null) {
                return null;
            }
            Drawable drawable = constantState.newDrawable().mutate();

            Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(),
                    Bitmap.Config.ARGB_8888);
            Canvas canvas = new Canvas(bitmap);
            drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
            drawable.draw(canvas);
            return bitmap;
        }
    }
}