android studio   Listview簡單實(shí)例

//layout 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:layout_width="match_parent"

    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    android:paddingBottom="@dimen/activity_vertical_margin"

   >

<ListView

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:id="@android:id/list"

    />

</RelativeLayout>

//代碼

package com.example.test.testlistview;

import android.app.ListActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.ArrayAdapter;

import android.widget.ListView;

import android.widget.TextView;

import android.widget.Toast;

import java.util.ArrayList;

import java.util.List;

public class ListViewArrayadapter extends ListActivity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_list_view_arrayadapter);

        List<String>ls = new ArrayList<String>();

        ls.add("測試數(shù)據(jù)1");

        ls.add("測試數(shù)據(jù)2");

        ls.add("測試數(shù)據(jù)1");

        ls.add("測試數(shù)據(jù)2");

        ls.add("測試數(shù)據(jù)1");

        ls.add("測試數(shù)據(jù)2");

        ls.add("測試數(shù)據(jù)1");

        ls.add("測試數(shù)據(jù)2");

        ls.add("測試數(shù)據(jù)1");

        ls.add("測試數(shù)據(jù)2");

        ls.add("測試數(shù)據(jù)1");

        ls.add("測試數(shù)據(jù)2");

        ArrayAdapter adapter =new ArrayAdapter(this,android.R.layout.simple_list_item_1,ls);

        setListAdapter(adapter);  //繼承ListActivity才有此函數(shù)

    }

    @Override

    protected void onListItemClick(ListView l, View v, int position, long id) {

       String s =((TextView)v).getText().toString();

        Toast.makeText(this,"提示"+position+s,Toast.LENGTH_LONG).show();

        super.onListItemClick(l, v, position, id);

    }

}

//效果圖

簡單的listview，關(guān)鍵是ArrayAdapter中布局和數(shù)據(jù)的適配。android.R.layout.simple_list_item_1系統(tǒng)自帶的樣式，可以根據(jù)自己的要求更改布局樣式。List<String>ls = new ArrayList<String>() 用于顯示的數(shù)據(jù)。

//SimpleAdapter 適配Listview

//layout

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

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

    android:orientation="horizontal" android:layout_width="match_parent"

    android:layout_height="match_parent">

<ImageView

    android:id="@+id/img2"

    android:layout_height="wrap_content"

    android:layout_width="wrap_content"

    />

    <LinearLayout

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:orientation="vertical">

        <TextView

            android:id="@+id/title2"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content" />

        <TextView

            android:id="@+id/price"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"/>

    </LinearLayout>

</LinearLayout>

//關(guān)鍵代碼設(shè)置listview

 SimpleAdapter adapter1 =new SimpleAdapter(this,lm,R.layout.simple2, new String[]{"title","img","price"},new int[]{R.id.title2,R.id.img2,R.id.price});

 setListAdapter(adapter1);

//得到數(shù)據(jù)

 public List<Map<String, Object>> getData2()

    {

        Map<String,Object>value =new HashMap<String,Object>();

        List<Map<String,Object>>lm =new ArrayList<Map<String,Object>>();

        value.put("title","蘋果");

        value.put("img",R.drawable.aphone);

        value.put("price","價(jià)格：5800");

        lm.add(value);

        value =new HashMap<String,Object>();

        value.put("title", "三星");

        value.put("img",R.drawable.sphone);

        value.put("price","價(jià)格：4800");

        lm.add(value);

        value =new HashMap<String,Object>();

        value.put("title","華為");

        value.put("img",R.drawable.hphone);

        value.put("price","價(jià)格：6000");

        lm.add(value);

        return  lm;

    }

//SimpleCursorAdapter適配Listview 用于數(shù)據(jù)庫數(shù)據(jù)的顯示

//關(guān)鍵代碼

 //獲得一個指向系統(tǒng)通訊錄數(shù)據(jù)庫的Cursor對象獲得數(shù)據(jù)來源

                Cursor cursor = getContentResolver().query(Contacts.People.CONTENT_URI,null,null,null,null);

                startManagingCursor(cursor);

                //實(shí)例化列表適配器

                ListAdapter la = new SimpleCursorAdapter(this,android.R.layout.simple_list_item_2,cursor,new String[]{Contacts.People.NAME,Contacts.People.NUMBER},new int[]{android.R.id.text1,android.R.id.text2});

                setListAdapter(la);

//一定要在AndroidManifest.xml加讀取聯(lián)系人的權(quán)限。

 <uses-permission android:name="android.permission.READ_CONTACTS"/>

//代碼下載

http://down.51cto.com/data/2119105