适配器的用法

我先贴出代码，后面详细介绍

Mativity.java

package com.example.sss;

import java.util.List;

import android.app.Activity;

import android.os.Bundle;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.ListView;

public class MainActivity extends Activity {

/**

 * 适配器

 */

  private baseadapterss  bseeee;

private  ListView  lv_item;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

lv_item=(ListView)findViewById(R.id.lv_item);

lv_item.setOnItemClickListener(new  OnItemClickListener() {

@Override

public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {

// TODO Auto-generated method stub

}

});

bseeee=new  baseadapterss(MainActivity.this);

lv_item.setAdapter(bseeee);

}

}

适配器的baseadapterss.java

package com.example.sss;

import android.content.Context;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

public class baseadapterss extends BaseAdapter{

private  Context  context;

public baseadapterss(Context  context) {

this.context=context;

}

@Override

public int getCount() {

// TODO Auto-generated method stub

return 45;

}

@Override

public Object getItem(int position) {

// TODO Auto-generated method stub

return position;

}

@Override

public long getItemId(int position) {

// TODO Auto-generated method stub

return position;

}

@Override

public View getView(int position, View convertView, ViewGroup parent) {

if (convertView==null) {

convertView=LayoutInflater.from(context).inflate(R.layout.item, null);

}

return convertView;

}

}

下面的activity_layout.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >

    <ListView

        android:id="@+id/lv_item"

        android:divider="#b4b4b4"

        android:dividerHeight="1dp"

        android:listSelector="#00000000"

        android:scrollbars="none"

        android:layout_width="match_parent"

        android:layout_height="wrap_content" >

    </ListView>

</LinearLayout>

item.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >

      <TextView 

         android:layout_width="wrap_content"

         android:layout_height="40dp"

         android:text="你好！" 

         android:gravity="center"

          />

</LinearLayout>

我之前还写错了适配器的用法，导致了程序跑错了；以上把代码贴上就可以跑出来了。如果你觉得我的仔细就给我一个赞吧。