Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
    
 Sunami - An Android music player which knows what you want to listen to.
 Copyright (C) 2015 Wojtek Swiderski
    
 Sunami is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.
    
 Sunami is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
    
 The GNU General Public License can be found at the root of this repository.
    
 To contact me, email me at wojtek.technology@gmail.com
    
 */

import android.content.Context;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.provider.MediaStore;

public class Main {
    public static Bitmap decodeSampledBitmapFromAlbumId(Context context, long album_id, int reqWidth,
            int reqHeight) {

        // Get real path from the Uri
        String pathName = getRealPathFromURI(context, album_id);

        // First decode with inJustDecodeBounts = true to check dimensions
        final BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(pathName, options);

        // Calculate inSampleSize
        options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);

        // Decode bitmap with inSampleSize set
        options.inJustDecodeBounds = false;
        return BitmapFactory.decodeFile(pathName, options);
    }

    public static String getRealPathFromURI(Context context, long album_id) {
        Cursor cursor = null;
        try {
            cursor = context.getContentResolver().query(MediaStore.Audio.Albums.EXTERNAL_CONTENT_URI,
                    new String[] { MediaStore.Audio.Albums.ALBUM_ART }, MediaStore.Audio.Albums._ID + "=?",
                    new String[] { String.valueOf(album_id) }, null);
            int column_index = cursor.getColumnIndexOrThrow(MediaStore.Audio.Albums.ALBUM_ART);
            cursor.moveToFirst();
            return cursor.getString(column_index);
        } finally {
            if (cursor != null) {
                cursor.close();
            }
        }
    }

    public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) {
        final int height = options.outHeight;
        final int width = options.outWidth;
        int inSampleSize = 1;

        if (height > reqHeight || width > reqWidth) {
            final int halfHeight = height / 2;
            final int halfWidth = width / 2;

            // Calculate the largest inSampleSize value that is a power of 2 and keeps both
            // height and width larger than the requested height and width.
            while ((halfHeight / inSampleSize) > reqHeight && (halfWidth / inSampleSize) > reqWidth) {
                inSampleSize *= 2;
            }
        }

        return inSampleSize;
    }
}