A backwards compatible implementation of GridLayout for Android
Java
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README.md Updated README Jan 20, 2012

README.md

GridLayout Library

This library provides a version of GridLayout that works across all versions of Android 1.5+. As a side effect, this library also includes the lightweight Space as well.

For an introduction to GridLayout/Space, check out the Android Developers Blog post about the benefits and usage of GridLayout and Space.

Compilation

Compiling this library requires that the build SDK version be set to 3.0 or above. (It uses some more modern methods if they are available.)

Usage

This is a copy of the GridLayout from Android, so its usage is very similar. The only difference is that some attributes you will need to use your project's namespace instead of the android namespace:

<com.gridlayout.GridLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:gridlayout="http://schemas.android.com/apk/res/com.mycompany.myapp"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    gridlayout:alignmentMode="alignBounds"
    gridlayout:columnCount="4"
    gridlayout:columnOrderPreserved="false"
    gridlayout:useDefaultMargins="true" >

Caveats

Due to the inability to detect changes in child visibility in older versions of ViewGroup, it is necessary to call GridLayout.notifyChildVisibilityChanged() whenever you change the visibility of a child View of a GridLayout.

If you never change the visibility of children, you don't have to worry about this.