adapter和listview

ListView混排：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >    <Button        android:id="@+id/button1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="add" />    <ListView        android:id="@+id/list"        android:layout_width="wrap_content"        android:layout_height="wrap_content"/></LinearLayout>

public class MainActivity extends Activity {private String[] Name = { "Davi", "Danis", "Horker", "Jim", "Tom", "John" };private ArrayList<String> mArrayList;private ListAdapter mAdapter;private ListView mListView;private int count;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);// mListView = new ListView (this);使用这初始化后，需要使用setContentView(mListView)刷新界面，因为你初始化的listview不再main的布局文件中，这里实际上是替换了布局，没有达到布局文件中的效果，仅仅是一个listview 看不见buttoncount = 0;mArrayList = new ArrayList<String>();mListView = (ListView) findViewById(R.id.list);//获取布局文件中的ListView，以后都是操作的main.xml中的布局中的list部分mAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_multiple_choice, mArrayList);Button mButton = (Button) findViewById(R.id.button1);mListView.setAdapter(mAdapter);//更新界面中的list信息mButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubif (count < Name.length) {mArrayList.add(Name[count]);count++;mListView.setAdapter(mAdapter);} else {Log.e("Listtest","Name has not");}}});}@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;}}

没有继承ListActivity类。

自定义Adapter：

http://www.cnblogs.com/wangjianhui/archive/2011/06/15/2081714.html 根据这篇文章学习的结果，介绍的不错

人口：

package com.example.myselfadapter;import java.util.ArrayList;import android.app.Activity;import android.os.Bundle;import android.view.Menu;import android.widget.ListView;public class AdpActivity extends Activity {private MyAdapter mMyAdapter;private ListView mListView;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_adp);//自定义Adapter的使用，和一般的Adapter使用差别不大，主体需要实现的部分可以在自定义的类中实现mListView = (ListView)findViewById(R.id.list);mMyAdapter = new MyAdapter(this);mListView.setAdapter(mMyAdapter);}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.adp, menu);return true;}}

MyAdapter.java：

package com.example.myselfadapter;import java.util.ArrayList;import android.content.Context;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.TextView;//自定义Adapter的关键在与实现几个内部函数，getcount,getItem,getItemId,getView4个函数。getcount返回Adapter中包含的list的个数；getItem根据位置返回list列表中其中一项；getItemId根据位置返回ID值，一般返回位置就可以了；getView返回自定义的listView中其中一个item的布局的view，布局可以自己实现，获取布局信息后使用list列表里面存储的信息填充进item布局中的每一个元素然后返回。public class MyAdapter extends BaseAdapter {                private Context mContext;private LayoutInflater mLayoutInflater;private ArrayList<String> mArrayList;private String[] Name = {"Davi", "Danis", "Horker", "Jim", "Tom", "John"};//构造函数根据需求编写public MyAdapter(Context context) {mContext = context;mLayoutInflater = LayoutInflater.from(mContext);mArrayList = new ArrayList<String>();for (int i = 0; i < Name.length; i++) {mArrayList.add(Name[i]);}}@Overridepublic int getCount() {// TODO Auto-generated method stubreturn mArrayList.size();}@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubreturn mArrayList.get(position);}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubreturn position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {// TODO Auto-generated method stubif (convertView == null)convertView = mLayoutInflater.inflate(R.layout.item,null);TextView mTextView = (TextView)convertView.findViewById(R.id.text);mTextView.setText(mArrayList.get(position));return convertView;}}    

main.xml 布局文件：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >//main布局文件    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/hello_world" />    <ListView        android:id = "@+id/list"        android:layout_width="wrap_content"        android:layout_height="wrap_content" /></LinearLayout>

item.xml    listview中每一个item的布局

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="horizontal" >    <TextView        android:id="@+id/text"        android:layout_width="242dp"        android:layout_height="wrap_content"        android:textAppearance="?android:attr/textAppearanceMedium" /></LinearLayout>