Android Scrollable Wallpaper On Screen's Phone Programmatically

I am developing a wallpaper application in Android and i am finding a right way to set scrollable wallpaper for my app. Now, my code can set wallpaper from bitmap but it was croppe

Solution 1:

Post is old but anyway... You can try something similar to this

public static void setWallpaper(Context context) {
    int wallpaperRId = getWallpaperImageRid(context);

    if (wallpaperRId == 0) {
        return;
    }

    Bitmap tempBmp = BitmapFactory.decodeResource(context.getResources(), wallpaperRId);

    // get size
    DisplayMetrics metrics = context.getResources().getDisplayMetrics();
    int width = metrics.widthPixels;
    int height = metrics.heightPixels;
    int area = width * height / 1000;

    width *= 2;
    float scale = width / (float) tempBmp.getWidth();
    height = (int) (scale * tempBmp.getHeight());

    Bitmap bitmap = Bitmap.createScaledBitmap(tempBmp,width,height, true);

    WallpaperManager wallpaperManager = WallpaperManager.getInstance(context);
    wallpaperManager.setWallpaperOffsetSteps(1, 1);
    wallpaperManager.suggestDesiredDimensions(width, height);

    try {
        wallpaperManager.setBitmap(bitmap);
    } catch (Exception e) {
        e.printStackTrace();
    }
}