Android Studio Listview Example How To Use ArrayAdapter
Create a new project by going to File New Android Project. Fill all the details and name your activity as AndroidListViewActivity. Android pre-builds a simple Layout which ListItem is made by a CheckedTextView. In this example, I will show you how to use ArrayAdapter and android.R.layout.simplelistitemchecked. (Or android.R.layout.simplelistitemmultiplechoice) Create a new Android project: ListViewSimpleListItemChecked.
Android ListView is a view which groups several items and display them in vertical scrollable list. Note: The demo app was created using IntelliJ IDEA 13.1.6 development environment but is also compatible with Android Studio and Eclipse development environments. This tutorial assumes that you have a java coding background as most of the work is going to be done in java programming language.
Most of the case, keep it this.Second argument will be layout defined in XML file and having TextView for each string in the array.Final argument is an array of strings which will be populated in the text view.Once you have array adapter created, then simply call setAdapter() on your ListView object as follows −ListView listView = (ListView) findViewById(R.id.listview) You will define your list view under res/layout directory in an XML file. Consider you have an array of strings you want to display in a ListView, initialize a new ArrayAdapter using a constructor to specify the layout for each string and the string array −ArrayAdapter adapter = new ArrayAdapter(this,R.layout.ListView,StringArray) Here are arguments for this constructor −First argument this is the application context. By default, ArrayAdapter creates a view for each array item by calling toString() on each item and placing the contents in a TextView. The default value is true.You can use this adapter when your data source is an array. The default value is true.When set to false, the ListView will not draw the divider after each header view. This could be in px, dp, sp, in, or mm.Specifies the reference to an array resource that will populate the ListView.When set to false, the ListView will not draw the divider before each footer view.
This file can include each of the fundamental life cycle methods.Public class ListDisplay extends Activity When you instantiate the SimpleCursorAdapter, pass the layout to use for each result, the Cursor containing the results, and these two arrays −SimpleCursorAdapter adapter = new SimpleCursorAdapter(this,R.layout.person_name_and_number, cursor, fromColumns, toViews, 0) The SimpleCursorAdapter then creates a view for each row in the Cursor using the provided layout by inserting each from Columns item into the corresponding toViews view. Using this file.Run the application to launch Android emulator and verify the result of the changes done in the application.Following is the content of the modified main activity file src/com.example.ListDisplay/ListDisplay.java. So you can customize its fonts, padding, color etc. This file will have setting to display all the list items. Follow the following steps to modify the Android application we created in Hello World Example chapter − StepYou will use Android Studio IDE to create an Android application and name it as ListDisplay under a package com.example.ListDisplay as explained in the Hello World Example chapter.Modify the default content of res/layout/activity_main.xml file to include ListView content with the self explanatory attributes.No need to change string.xml, Android studio takes care of default string constants.Create a Text View file res/layout/activity_listview.xml. ExampleFollowing is the example which will take you through simple steps to show how to create your own Android application using ListView.
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