Android GridView draw dividers
Unfortunately, after looking at the source code, I could not see any easy way to add borders other than taking the approach of adding borders to the each cell. As a reference, I will post my solution here.
list_item.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal"
android:background="@drawable/list_selector">
<!-- Cell contents -->
</LinearLayout>
list_selector.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:state_selected="true"
android:drawable="@drawable/item_border_selected"
/>
<item
android:state_pressed="true"
android:drawable="@drawable/item_border_selected"
/>
<item
android:drawable="@drawable/item_border"
/>
</selector>
item_border.xml
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid
android:color="@android:color/transparent"
/>
<stroke
android:width="1px"
android:color="@color/list_divider"
/>
</shape>
item_border_selected.xml
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid
android:color="@color/list_select"
/>
<stroke
android:width="1px"
android:color="@color/list_divider"
/>
</shape>
items_view.xml
<?xml version="1.0" encoding="utf-8"?>
<GridView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginLeft="-1px"
android:layout_marginRight="-1px"
android:listSelector="@android:color/transparent"
/>
Since all lines double in size as they join their neighboring cells, I made the divider size 1px instead of 1dp so it doesn't appear too large on some screens. Also, I made the grid view have negative margins to hide the lines on either side. I hope this helps someone.
android gridview row dividers / separators
I ended up creating a custom gridview, something like this:
https://stackoverflow.com/a/9757501/1310343
using a background image that is exactly as high as one item in my gridview, and has a devider at the bottom.
Works like a charm!
Android GridView with Separator
You'll probably have to play with padding and background colors. Set the background for the table to one color, and the background to each View in the table to another color. Set a 1 or 2 pixel padding around each View in the table, and you should have a border between.
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