create Mosaic wallpaper - Android User Interface

Android examples for User Interface:Wallpaper

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Description

create Mosaic wallpaper

Demo Code


import android.content.Context;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.media.ThumbnailUtils;
import android.provider.MediaStore;

public class Main{
    private static final int MOSAIC_IMAGE_SIDE = 400;
    public static Bitmap createMosaic(Context context) {
        Bitmap mosaic = null;/*from  w ww.j a  va  2s . c  om*/

        String imagePathes[] = new String[4];

        String sortClause = " asc";
        Cursor cursor = context
                .getContentResolver()
                .query("your uri",
                        new String[] { "IMAGE_LOCATION" },
                        null, null, sortClause);
        cursor.moveToFirst();
        int i = 0;
        do {
            imagePathes[i] = cursor.getString(0);
            i++;
        } while (cursor.moveToNext());
        cursor.close();

        Bitmap image0 = getThumbnailFromPath(imagePathes[0]);
        Bitmap image1 = getThumbnailFromPath(imagePathes[1]);
        Bitmap image2 = getThumbnailFromPath(imagePathes[2]);
        Bitmap image3 = getThumbnailFromPath(imagePathes[3]);

        mosaic = Bitmap.createBitmap(MOSAIC_IMAGE_SIDE * 2,
                MOSAIC_IMAGE_SIDE * 2, Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(mosaic);
        Paint paint = new Paint();
        canvas.drawBitmap(image0, 0, 0, paint);
        canvas.drawBitmap(image1, MOSAIC_IMAGE_SIDE, 0, paint);
        canvas.drawBitmap(image2, 0, MOSAIC_IMAGE_SIDE, paint);
        canvas.drawBitmap(image3, MOSAIC_IMAGE_SIDE, MOSAIC_IMAGE_SIDE,
                paint);

        return mosaic;
    }
    private static Bitmap getThumbnailFromPath(String imagePath) {
        Bitmap bitmap = null;

        bitmap = BitmapFactory.decodeFile(imagePath);
        if (bitmap == null) {
            bitmap = Bitmap.createBitmap(MOSAIC_IMAGE_SIDE,
                    MOSAIC_IMAGE_SIDE, Bitmap.Config.ARGB_8888);
        }
        bitmap = ThumbnailUtils.extractThumbnail(bitmap, MOSAIC_IMAGE_SIDE,
                MOSAIC_IMAGE_SIDE);

        return bitmap;
    }
}

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