ArrayAdapter,SimpleAdapter的基本使用

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一.布局

<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">    <TextView        android:id="@+id/tv_title"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="listview示例" />    <RadioGroup         android:id="@+id/rg_radiogroup"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:contentDescription="适配器模式"        >        <RadioButton             android:id="@+id/rb_arrayadapter"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="ArrayAdapter"            />        <RadioButton             android:id="@+id/rb_simpleadapter"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="SimpleAdapter"            />        <RadioButton             android:id="@+id/rb_baseadapter"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="BaseAdapter"            />        </RadioGroup>    <ListView             android:id="@+id/lv_listviewdemo"            android:layout_width="match_parent"            android:layout_height="0dp"            android:layout_weight="1"/></LinearLayout>

1.ArrayAdapter子布局

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:orientation="vertical" >    <TextView         android:layout_centerVertical="true"        android:layout_alignParentLeft="true"        android:layout_marginLeft="10dp"        android:id="@+id/tv_arrayadapter"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="ceshi"        />    <RadioButton        android:layout_centerVertical="true"        android:layout_alignParentRight="true"        android:layout_marginRight="10dp"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        /></RelativeLayout>

2.SimpleAdapter子布局

<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="wrap_content">    <TextView         android:layout_centerVertical="true"        android:layout_alignParentLeft="true"        android:layout_marginLeft="10dp"        android:id="@+id/tv_name"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="nihao"        />    <TextView        android:id="@+id/tv_age"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginRight="10dp"        android:layout_alignParentRight="true"        android:layout_centerVertical="true"        android:text="niffo" /></RelativeLayout>

二。java文件

package com.m520it.listviewreview;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import android.os.Bundle;import android.app.Activity;import android.util.Log;import android.widget.ArrayAdapter;import android.widget.ListView;import android.widget.RadioButton;import android.widget.RadioGroup;import android.widget.RadioGroup.OnCheckedChangeListener;import android.widget.SimpleAdapter;import android.widget.TextView;public class MainActivity extends Activity {    private RadioButton arrRadio;    private RadioButton baseRadio;    private RadioButton simpleRadio;    private RadioGroup meduleradiogroup;    private ListView lvdemo;    private TextView titletv;    private ArrayAdapter myArrayAdapter;    private SimpleAdapter mSimpleAdapter;    private List<String> adapterone;    private ArrayList<Map<String, String>> simpledata;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        initArrayData();        initSimpleData();        initView();    }    public void initArrayData(){//      myArrayAdapter//      myBaseAdapter//      mSimpleAdapter        adapterone = new ArrayList<String>();        for(int i = 0 ; i < 100 ; i++){            String itemResult = "arrayitem"+i;            adapterone.add(itemResult);        }    }    public void initSimpleData() {        simpledata = new ArrayList<Map<String,String>>();        for(int i = 0;i<100;i++){            Map<String, String> simpleMap = new HashMap<String, String>();            simpleMap.put("name","小"+i);            simpleMap.put("age", "年龄"+i);            simpledata.add(simpleMap);        }    }    public void initView(){        setContentView(R.layout.activity_main);        arrRadio = (RadioButton) findViewById(R.id.rb_arrayadapter);        baseRadio = (RadioButton) findViewById(R.id.rb_baseadapter);        simpleRadio = (RadioButton) findViewById(R.id.rb_simpleadapter);        meduleradiogroup = (RadioGroup) findViewById(R.id.rg_radiogroup);        lvdemo = (ListView)findViewById(R.id.lv_listviewdemo);        titletv = (TextView)findViewById(R.id.tv_title);        meduleradiogroup.setOnCheckedChangeListener(new OnCheckedChangeListener() {            @Override            public void onCheckedChanged(RadioGroup group, int checkedId) {                switch (checkedId) {                case R.id.rb_arrayadapter:                    titletv.setText("array");                        if(myArrayAdapter == null){                            myArrayAdapter = new ArrayAdapter<String>(MainActivity.this,                                     R.layout.listdemo_item,R.id.tv_arrayadapter,adapterone);                        }                        lvdemo.setAdapter(myArrayAdapter);                    break;                case R.id.rb_baseadapter:                    titletv.setText("base");                    break;                case R.id.rb_simpleadapter:                    titletv.setText("simple");                        if(mSimpleAdapter == null){                            mSimpleAdapter = new SimpleAdapter(MainActivity.this,simpledata,R.layout.simple_item,new String[]{"name","age"},new int[]{R.id.tv_name,R.id.tv_age});                            }                        lvdemo.setAdapter(mSimpleAdapter);                    break;                }            }        });    }}

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