android studio listview different colors

ANDROID STUDIO LISTVIEW DIFFERENT COLORS ANDROID

Project Structureįollowing is the activity_list.xml. Now let us start creating a custom adapter by defining the project structure first. Create a Custom adapter class and pass Arraylist as a parameter in customadapter constructor. Save model data in arralist for each row.Ĥ. Create a class Customadapter which extends BaseAdapter and implements abstact methods.ģ. Steps to Create Custom Adapter in Androidġ. It is abstract and therefore, cannot be directly instantiated.

Similarly, there is a related CursorAdapter that you should use if your data is in a Cursor.BaseAdapter as its name implies, is the base class for so many concrete adapter implementations on Android. it allows you to do pretty much whatever you want whereas ArrayAdapter is a more complete implementation that works well for data in arrays or ArrayLists.

ANDROID STUDIO LISTVIEW DIFFERENT COLORS ANDROID

Why we need Custom Adapter if Android Provides ArrayAdapter & CursorAdapterĬustomadapter extends Baseadapter and it is very flexible i.e. You can populate your ListViews by using an Android adapter. Its just a UI element without data in it. Here ListView don't contain any data themselves. Lets suppose that if we want to display a list in android app for this we use ListView provided by android. Adapters are responsible for supplying the data and creating the views representing each item.

The Adapter is also responsible for making a View for each item in the data set. The Adapter provides access to the data items. What is the Basic use of an AdapterĪn Adapter object acts as a bridge between an AdapterView and the underlying data for that view. With the use of cursor adapter we can have more control over the binding of data values to layout controls. We use cursorAdapter when we have data in Cursor e.g when we get data from database.

Here the first parameter is context, second parameter is Xml Layout for the row and the third parameter is the id of the TextView within the layout resource to be populated and last parameter is the array containing values.Follow ArrayAdapter for more information on array adapter. ( this, android.R.layout.simple_list_item_1, android.R.id.text1, here we pass String Array values) Following is an example to define an arrayAdapter. We can define our own or use one of Android’s, such as : android.R.layout.simple_list_item_1. When we create the adapter, we need to supply the layout for displaying each array string. The text view is then displayed in the AdapterView (a ListView for example). The default ArrayAdapter converts an array item into a String object putting it into a TextView. We use it when our data source in an array. Other Interesting Posts Android Asynctask Example Android Service Example Broadcastreceiver Example Tutorial What is an Array AdapterĪrrayAdapter links the array to the Adapter View. Source for Country POJO - Country.java package com.An Adapter object acts as a bridge between an AdapterView and the underlying data for that view. Source for ListView Row Layout - list_row.xml Source for Main Activity Layout - activity_main.xml So to achieve our alternate colors for each row we extend the SimpleCursorAdapter to create a custom class and override the getView method. In this example we display a basic ListView from SQLite database using the SimpleCursorAdapter which by default doesn't have the zebra stripes on the rows. To change the background color of a row in ListView you have to use a custom Adapter.

Android studio listview different colors