background image not repeating in android layout

Question

i've used the following code to repeat the image in the background but its not working can any one help?

Layout.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@drawable/grass_bg"
    >

grass_bg.xml in drawable looks like this

<?xml version="1.0" encoding="utf-8"?>
    <bitmap xmlns:android="http://schemas.android.com/apk/res/android"
        android:src="@drawable/grass_small"
        android:tileMode="repeat"/>

its showing the same small image. its not repeating...

Answer 1

Bitmaps (and their states) get reused a lot, and I've found it's easy to lose the tileMode if a BitmapDrawable is used in more than one place. The following code fixes the problem for me:

 public static void fixBackgroundRepeat(View view) {
      Drawable bg = view.getBackground();
      if(bg != null) {
           if(bg instanceof BitmapDrawable) {
                BitmapDrawable bmp = (BitmapDrawable) bg;
                bmp.mutate(); // make sure that we aren't sharing state anymore
                bmp.setTileModeXY(TileMode.REPEAT, TileMode.REPEAT);
           }
      }
 }