![]() The data model that is contained in the ArrayList is shown below. The content_main.xml contains the ListView as shown below. getView() is the method that returns the actual view used as a row within the ListView at a particular position. Of course, scrolling through the ListView is impossible. ![]() The ScrollBar has no 'thumb' in it because the ListView apparently thinks that it is infinitely long. The problem is that the ListView's contents extend below the bottom of the screen. In this view, you can swipe up and down to scroll through the months and tap. I expected that the ListView would get its height from the parent Grid and work within that space. We are creating a custom ListView of by subclassing ArrayAdapter with the DataModel as the object. The app is compatible with Android tablets, and it will automatically adapt. ![]() Clicking the info will display a SnackBar with information specific to that row. However, the starting layouts scene is often determined automatically from the. Clicking the row would display the SnackBar with the text elements of that row. Create a Scene object for both the starting layout and the ending layout. In this tutorial we’ll build an application that consists of list of rows displaying text descriptions and an info icon. Let’s create a xml layout that presents the items in a row in a customised way. To configure this, right click on ListView (or ExpandableListView or GridView), and choose between one of the standard list item layouts or select 'Choose Layout' to pick one of your own: (Note that you can also 'Choose Header' and 'Choose Footer' to configure header and footer layouts to be shown in the tool as well). As the user scrolls through the list, items that leave the screen are kept in memory for later use and then every new row that enters the screen reuses an older row kept in the memory. After that no new row items are created in the memory. Recycling RowsĪs a ListView is instantiated and the rows are populated such that the full height of the list is filled. There are other adapters as well, such as the CursorAdapter which binds directly to a result set from a Local SQLite Database and it uses a Cursor as it’s data source. That’s what we’ll implement in this tutorial. The simplest Adapter to populate a view from an ArrayList is the ArrayAdapter. Also to enhance the user experience, we’ll animate the ListView while scrolling. In this tutorial we’ll use a CustomAdapter that populates the custom rows of the Android ListView with an ArrayList.
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