ListView yes Android One of the most commonly used controls in .

When there's too much data to show ,ListView That comes in handy . It allows users to slide their fingers , Slide data in and out of the interface .

One 、 The simplest ListView Realization

1、 Modify layout file . We are activity_main.xml Add space to ListView.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android=""
tools:context="com.example.lkb.listviewtest.MainActivity"> <ListView
</ListView> </LinearLayout>

2、 go back to in . First, we create the data we need to display .

private String[] fruit = {"apple","watermelon","mango","strawberry","pineapple","jujube","banana",

3、 Finally, it is implemented in the code ListView Add data to . Data in an array cannot be passed directly to ListView Of , We need adapters .

Common adapters are ArrayAdapter,SimpleAdapter and SimpleCursorAdapter. Use here ArrayAdapter.

 ArrayAdapter<String> adapter = new ArrayAdapter<String>(MainActivity.this,

Here we get one ArrayAdapter object .ArrayAdapter There are six constructors for . This corresponds to

* Constructor
* @param context The current context.
* @param resource The resource ID for a layout file containing a TextView to use when
* instantiating views.
* @param objects The objects to represent in the ListView.
public ArrayAdapter(@NonNull Context context, @LayoutRes int resource, @NonNull T[] objects) {
this(context, resource, 0, Arrays.asList(objects));
android.R.layout.simple_list_item_1 yes Android Built in a layout file of id. Here we use it as a ListView Layout of subitems .
Finally through ListView Of setAdapter Method , Pass in the constructed adapter object , such ListView The connection with the data is established .
 ListView listView = (ListView) findViewById(;

Go through the three steps above , We have achieved ListView.

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