Android Bitmap Save saveBitmapPNGWithBackgroundColor( String strFileName, Bitmap bitmap, int nBackgroundColor)

Description

Save PNG image with background color

Parameter

Parameter	Description
strFileName	Save file path
bitmap	Input bitmap
nQuality	Jpeg quality for saving
nBackgroundColor	background color

Return

whether success or not

Declaration

public static boolean saveBitmapPNGWithBackgroundColor(
        String strFileName, Bitmap bitmap, int nBackgroundColor) 

Method Source Code

//package com.java2s;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import android.graphics.Bitmap;
import android.graphics.Bitmap.CompressFormat;
import android.graphics.Bitmap.Config;

import android.graphics.Canvas;

import android.graphics.Paint;
import android.graphics.Rect;

public class Main {
    /**//from www.  j  a v  a  2 s .  c  o m
     * Save PNG image with background color
     * @param strFileName Save file path
     * @param bitmap Input bitmap
     * @param nQuality Jpeg quality for saving
     * @param nBackgroundColor background color
     * @return whether success or not
     */
    public static boolean saveBitmapPNGWithBackgroundColor(
            String strFileName, Bitmap bitmap, int nBackgroundColor) {
        boolean bSuccess1 = false;
        boolean bSuccess2 = false;
        boolean bSuccess3;
        File saveFile = new File(strFileName);

        if (saveFile.exists()) {
            if (!saveFile.delete())
                return false;
        }

        int nA = (nBackgroundColor >> 24) & 0xff;

        // If Background color alpha is 0, Background color substitutes as white
        if (nA == 0)
            nBackgroundColor = 0xFFFFFFFF;

        Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
        Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth(),
                bitmap.getHeight(), Config.ARGB_8888);
        Canvas canvas = new Canvas(newBitmap);
        canvas.drawColor(nBackgroundColor);
        canvas.drawBitmap(bitmap, rect, rect, new Paint());

        OutputStream out = null;

        try {
            bSuccess1 = saveFile.createNewFile();
        } catch (IOException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }

        try {
            out = new FileOutputStream(saveFile);
            bSuccess2 = newBitmap.compress(CompressFormat.PNG, 100, out);
        } catch (Exception e) {
            e.printStackTrace();
        }

        try {
            if (out != null) {
                out.flush();
                out.close();
                bSuccess3 = true;
            } else
                bSuccess3 = false;

        } catch (IOException e) {
            e.printStackTrace();
            bSuccess3 = false;
        } finally {
            if (out != null) {
                try {
                    out.close();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

        return (bSuccess1 && bSuccess2 && bSuccess3);
    }
}

Related

1. saveBitmap(File file, Bitmap bitmap)
2. saveBitmap(File saveToFile, Bitmap bitmapToSave)
3. saveBitmapAsJpgAtSd(Bitmap mBitmap, String dirPath, String fileName)
4. saveBitmapFromView(View view, String path)
5. saveBitmapJPEGWithBackgroundColor( String strFileName, Bitmap bitmap, int nQuality, int nBackgroundColor)
6. saveBitmapToPath(Context ctxt, String path, String filename, Bitmap bm)
7. saveJPEGBitmap(Bitmap bmp, String path)
8. saveJpegFile(String fileName, Bitmap bitmap)
9. savePNGBitmap(Bitmap bmp, String path)