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.Context;

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

import android.net.Uri;

import java.io.FileNotFoundException;

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

public class Main {
    /**
     * Decode a file from the path and return a bitmap
     * @param uri
     * @param context
     * @return
     */
    public static Bitmap decodeFileFromPath(Uri uri, Context context) {

        InputStream in = null;
        try {
            in = context.getContentResolver().openInputStream(uri);

            //Decode image size
            BitmapFactory.Options o = new BitmapFactory.Options();
            o.inJustDecodeBounds = true;

            BitmapFactory.decodeStream(in, null, o);
            in.close();

            int scale = 1;
            int inSampleSize = 1024;
            if (o.outHeight > inSampleSize || o.outWidth > inSampleSize) {
                scale = (int) Math.pow(2, (int) Math.round(
                        Math.log(inSampleSize / (double) Math.max(o.outHeight, o.outWidth)) / Math.log(0.5)));
            }

            BitmapFactory.Options o2 = new BitmapFactory.Options();
            o2.inSampleSize = scale;
            in = context.getContentResolver().openInputStream(uri);
            Bitmap b = BitmapFactory.decodeStream(in, null, o2);
            in.close();

            return b;

        } catch (FileNotFoundException e) {
            //e.printStackTrace();
        } catch (IOException e) {
            //e.printStackTrace();
        }
        return null;
    }
}