ListView简单使用

Posted 2020-09-11 罗夏

一.重要知识点:
ArrayAdapter的使用
android.R.layout.simple_list_item_1 内置组件

二.xml布局
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.guo.listview.MainActivity">

<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:id="@+id/listview"/>
</RelativeLayout>

三.java代码

ListView listview;
private String[] data = {"苹果", "香蕉", "梨子", "桃子"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

listview = (ListView)findViewById(R.id.listview);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(
MainActivity.this,android.R.layout.simple_list_item_1,
data
);

listview.setAdapter(adapter);
}