AsymmetricGridView
An Android custom ListView that implements multiple columns and variable sized elements.
Please note that this is currently in a preview state.
This basically means that the API is not fixed and you should expect changes between releases.
Sample application:
Try out the sample application on Google Play
Screenshots:
Usage
Version 2.0.0 includes a major breaking change to the AsymmetricGridViewAdapter. You now provide
your own adapter to the AsymmetricGridViewAdapter constructor instead of extending it.
In your build.gradle file:
dependencies {
implementation 'com.felipecsl.asymmetricgridview:library:2.0.1'
}
In your layout xml:
<com.felipecsl.asymmetricgridview.library.widget.AsymmetricGridView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/listView"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
In your activity class:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (AsymmetricGridView) findViewById(R.id.listView);
// Choose your own preferred column width
listView.setRequestedColumnWidth(Utils.dpToPx(this, 120));
final List<AsymmetricItem> items = new ArrayList<>();
// initialize your items array
adapter = new ListAdapter(this, listView, items);
AsymmetricGridViewAdapter asymmetricAdapter =
new AsymmetricGridViewAdapter<>(this, listView, adapter);
listView.setAdapter(asymmetricAdapter);
}
Whenever your adapter changes (add or remove items), the grid will automatically reflect those
changes by subscribing to your adapter changes.
Toggle to enable/disable reordering of elements to better fill the grid
// Setting to true will move items up and down to better use the space
// Defaults to false.
listView.setAllowReordering(true);
listView.isAllowReordering(); // true
Snapshots of the development version are available in Sonatype's snapshots repository.
Works with Android 2.3.x and above.
Caveats
-
Currently only has good support for items with rowSpan = 2 and columnSpan = 2.
In the near future it will support different layout configurations. -
It will work best if you don't have too many items with different sizes. Ideally less
than 20% of your items are of special sizes, otherwise the library may not find the best
way to accommodate all the items without leaving a lot of empty space behind. -
Row layout is too complex, with many nested LinearLayouts. Move to a more flat layout
with a custom ViewGroup possibly.
Contributing
- Check out the latest master to make sure the feature hasn't been implemented or the bug hasn't been fixed yet
- Check out the issue tracker to make sure someone already hasn't requested it and/or contributed it
- Fork the project
- Start a feature/bugfix branch
- Commit and push until you are happy with your contribution
- Make sure to add tests for it. This is important so I don't break it in a future version unintentionally.
Copyright and license
Code and documentation copyright 2011-2015 Felipe Lima.
Code released under the MIT license.