Android开发-ArrayAdapter

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1、JAVA代码

public class MainActivity extends ListActivity {private String[] people={"zhangxioade","zhangxioade","zhangxioade","zhangxioade","zhangxioade","zhangxioade","zhangxioade","zhangxioade","zhangxioade"};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);setListAdapter(new ArrayAdapter<String>(this,R.layout.list_item,people));Button button01=(Button)findViewById(R.id.button1);button01.setOnClickListener(new OnClickListener(){public void onClick(View v){new AlertDialog.Builder(MainActivity.this).setTitle("ADT").setMessage("Welcome").setPositiveButton("YES",null).show();}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {// Handle action bar item clicks here. The action bar will// automatically handle clicks on the Home/Up button, so long// as you specify a parent activity in AndroidManifest.xml.int id = item.getItemId();if (id == R.id.action_settings) {return true;}return super.onOptionsItemSelected(item);}}

2.XML

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:orientation="vertical"    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="outman.androidlearn.MainActivity" >          <ListView android:id="@+id/android:list"         android:layout_width="fill_parent"        android:layout_height="0dip"        android:layout_weight="1"        android:drawSelectorOnTop="false"/>    <TextView        android:id="@+id/textView1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/hello_world" />      <Button        android:id="@+id/button1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginTop="31dp"        android:text="@string/CLICK" /></LinearLayout>

注意这个名字不能乱改

ListView android:id="@+id/android:list

3、list_item.xml 注意这个文件要新建

<?xml version="1.0" encoding="utf-8"?><TextView xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/list_item"    android:layout_width="match_parent"    android:layout_height="match_parent"     android:gravity="center_vertical">    </TextView>

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