set scrollable wallpaper across homescreen

Question

I want to set scrollable wallpaper on homescreen but my wallpaper gets center crop automatically. The images i am using are in ratio "3:2/ 16:9" so i want them to get spread uniformly on multiple pages of homescreen.

I am currently using:

wallpaperManager.suggestDesiredDimensions(width, height);
wallPaperBitmap = BitmapFactory.
                        decodeStream(url);

wallpaperManager.setBitmap(wallPaperBitmap);

`

<uses-sdk android:minSdkVersion="14" android:targetSdkVersion="21"/>

Answer 1

Got the help from androidhive.com

//get screen height
Display display = getWindowManager().getDefaultDisplay();
        Point size = new Point();
        display.getSize(size);
        screenHeight = size.y;


 wallPaperBitmap= ... //your bitmap resource

//adjust the aspect ratio of the Image
//this is the main part
int width = wallPaperBitmap.getWidth();
            width = (width * screenHeight) / wallPaperBitmap.getHeight();
//set the wallpaper
//this may not be the most efficent way but it works
wallpaperManager.setBitmap(Bitmap.createScaledBitmap(wallPaperBitmap, width, height, true));