Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

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

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

public class Main {
    /**
     * Save jpeg 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 saveBitmapJPEGWithBackgroundColor(String strFileName, Bitmap bitmap, int nQuality,
            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());

        // Quality limitation min/max
        if (nQuality < 10)
            nQuality = 10;
        else if (nQuality > 100)
            nQuality = 100;

        OutputStream out = null;

        try {
            bSuccess1 = saveFile.createNewFile();
        } catch (IOException e1) {
            e1.printStackTrace();
        }

        try {
            out = new FileOutputStream(saveFile);
            bSuccess2 = newBitmap.compress(CompressFormat.JPEG, nQuality, 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) {
                    e.printStackTrace();
                }
            }
        }

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