Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;

import android.text.TextUtils;

import java.lang.ref.WeakReference;

public class Main {

    private static WeakReference<Bitmap> cprsBmpBySize(String path, int rqsW, int rqsH) {
        if (TextUtils.isEmpty(path))
            return null;
        final BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(path, options);
        options.inSampleSize = caculateInSampleSize(options, rqsW, rqsH);
        options.inJustDecodeBounds = false;
        return new WeakReference<Bitmap>(BitmapFactory.decodeFile(path, options));
    }

    /**
     * caculate the bitmap sampleSize
     *
     * @return inSampleSize
     */
    private static int caculateInSampleSize(BitmapFactory.Options options, int rqsW, int rqsH) {
        final int height = options.outHeight;
        final int width = options.outWidth;
        int inSampleSize = 1;
        if (rqsW == 0 || rqsH == 0)
            return 1;
        if (height > rqsH || width > rqsW) {
            final int heightRatio = Math.round((float) height / (float) rqsH);
            final int widthRatio = Math.round((float) width / (float) rqsW);
            inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
        }
        return inSampleSize;
    }
}