Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;

import java.io.File;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

public class Main {
    public static Bitmap getFitSampleBitmap(String file_path, int width, int height) {
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(file_path, options);
        options.inSampleSize = getFitInSampleSize(width, height, options);
        options.inJustDecodeBounds = false;
        return BitmapFactory.decodeFile(file_path, options);
    }

    public static Bitmap getFitSampleBitmap(Resources resources, int resId, int width, int height) {
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        BitmapFactory.decodeResource(resources, resId, options);
        options.inSampleSize = getFitInSampleSize(width, height, options);
        options.inJustDecodeBounds = false;
        return BitmapFactory.decodeResource(resources, resId, options);
    }

    public static Bitmap getFitSampleBitmap(InputStream inputStream, String catchFilePath, int width, int height)
            throws Exception {
        return getFitSampleBitmap(catchStreamToFile(catchFilePath, inputStream), width, height);
    }

    public static int getFitInSampleSize(int reqWidth, int reqHeight, BitmapFactory.Options options) {
        int inSampleSize = 1;
        if (options.outWidth > reqWidth || options.outHeight > reqHeight) {
            int widthRatio = Math.round((float) options.outWidth / (float) reqWidth);
            int heightRatio = Math.round((float) options.outHeight / (float) reqHeight);
            inSampleSize = Math.min(widthRatio, heightRatio);
        }
        return inSampleSize;
    }

    public static String catchStreamToFile(String catchFile, InputStream inStream) throws Exception {

        File tempFile = new File(catchFile);
        try {
            if (tempFile.exists()) {
                tempFile.delete();
            }
            tempFile.createNewFile();
        } catch (IOException e) {
            e.printStackTrace();
        }
        FileOutputStream fileOutputStream = new FileOutputStream(tempFile);
        byte[] buffer = new byte[1024];
        int len = 0;
        while ((len = inStream.read(buffer)) != -1) {
            fileOutputStream.write(buffer, 0, len);
        }
        inStream.close();
        fileOutputStream.close();
        return catchFile;
    }
}