安卓ListView以及GridView用法以及源码课件

1、实验5.1：package com.example.test5;import android.os.Bundle;import android.R.string;import android.app.Activity;import android.view.Menu;import android.view.View;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.ArrayAdapter;import android.wid

2、get.ListView;import android.widget.TextView;import android.widget.Toast;public class MainActivity extends Activity private static final String strs = new String "first", "second", "third", "fourth", "fifth"/定义一个String数组用来显示ListView的内容Overrideprotecte

3、d void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);ListView list = (ListView)findViewById(R.id.listView1);list.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,strs);list.setOnItemClickListener(new On

4、ItemClickListener()Overridepublic void onItemClick(AdapterView<?> arg0, View view, int arg2, long id) / TODO Auto-generated method stubString str = (String) (TextView) view).getText();/Toast.makeText(this, text, duration)Toast.makeText(getApplicationContext(),str, Toast.LENGTH_SHORT).show(););

5、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;Layout XML:<RelativeLayout xmlns:android=" xmlns:tools=" android:layout_width="match_parent" an

6、droid: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&quo

7、t; tools:context=".MainActivity" > <TextView android:id="+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="string/hello_world" /> <ListView android:id="+id/listView1" android:l

8、ayout_width="match_parent" android:layout_height="wrap_content" android:layout_alignLeft="+id/textView1" android:layout_below="+id/textView1" android:layout_marginLeft="26dp" android:layout_marginTop="22dp" > </ListView></Relati

9、veLayout>实验5.2：package org.example.test;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import android.app.ListActivity;import android.os.Bundle;import android.widget.SimpleAdapter;public class test5 extends ListActivity /* Called when the activity i

10、s first created. */ Override public void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState); /setContentView(R.layout.main); SimpleAdapter adapter = new SimpleAdapter(this, getData(), R.layout.item, new String"title","info","img",new intR.id.title,R.

11、,R.id.img); setListAdapter(adapter); private List<Map<String,Object>>getData() List<Map<String,Object>>list = new ArrayList<Map<String,Object>>(); Map<String,Object> map = new HashMap<String,Object>(); map.put("title", "G1");

12、 map.put("info", "google 1"); map.put("img", R.drawable.aomen); list.add(map); map = new HashMap<String,Object>(); map.put("title", "G2"); map.put("info", "google 2"); map.put("img", R.drawable.photo1426); list.add

13、(map); map = new HashMap<String,Object>(); map.put("title", "G3"); map.put("info", "google 3"); map.put("img", R.drawable.photo1450); list.add(map); return list; Layout XmlItem.XML:<?xml version="1.0" encoding="UTF-8"?>

14、;<LinearLayout xmlns:android=" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="fill_parent" ><ImageViewandroid:id="+id/img" android:layout_width="wrap_content" android:layout_height="wrap_

15、content" android:layout_margin="5px"/> <LinerLayout android:orientation="vertical" android:layout_width="wrap_content" android:layout_height="wrap_content" > <TextView android:id="+id/title" android:layout_width="wrap_content&qu

16、ot; android:layout_height="wrap_content" android:textSize="22px"/> <TextView android:id="+id/info" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="13px"/> </LinerLayout></LinearLa

17、yout>Main.xml:<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android=" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" ><ListView android:id="+id/ListView01&

18、quot; android:layout_width="wrap_content" android:layout_height="wrap_content"></ListView></LinearLayout>实验5.3：package com.example.test5_new3;import android.os.Bundle;import java.util.ArrayList;import java.util.HashMap;import android.app.Activity;import android.con

19、tent.Context;import android.view.Menu;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.BaseAdapter;import android.widget.GridView;import android.widget.ImageView;import android.widget.

20、SimpleAdapter;public class MainActivity extends Activity private GridView gridview;private Integer mThumbIds=R.drawable.photo1423,R.drawable.photo1424,R.drawable.photo1426,R.drawable.photo1433,R.drawable.photo1441,R.drawable.photo1450,R.drawable.photo1453,R.drawable.photo1796,R.drawable.photo1803,;O

21、verrideprotected void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);gridview =(GridView)findViewById(R.id.gridView1);/gridview.setAdapter(new ImageAdapter(this);ArrayList<HashMap<String, Object>> lstImageItem = new ArrayList

22、<HashMap<String, Object>>();/初始化列表数据 for (int i = 0; i < 9; i+) HashMap<String, Object> map = new HashMap<String, Object>(); map.put("ItemImage", mThumbIdsi);/ 添加图像资源的ID ID和hashMap数组进行绑定 map.put("ItemText", "宫式布局" + String.valueOf(i);/ 按序号做Ite

23、mText lstImageItem.add(map); SimpleAdapter saImageItems = new SimpleAdapter(this, / 没什么解释 lstImageItem,/ 数据来源 R.layout.item,/ night_item的XML实现 / 动态数组与XML:Item对应的子项 new String "ItemImage", "ItemText" , / Item的XML文件里面的一个ImageView01,两个TextView ID new int R.id.ItemImage01, R.id.ItemT

24、ext01 ); / 添加并且显示 gridview.setAdapter(saImageItems); / 添加消息处理 gridview.setOnItemClickListener(new ItemClickListener(); class ItemClickListener implements OnItemClickListener public void onItemClick(AdapterView<?> arg0,/ The AdapterView where the click happened View arg1,/ The view within the A

25、dapterView that was clicked int position,/第几项的意思 The position of the view in the adapter long Item_id/ The row id of the item that was clicked ) / 在本例中arg2=arg3 SuppressWarnings("unchecked") HashMap<String, Object> item = (HashMap<String, Object>) arg0.getItemAtPosition(positio

26、n); / 显示所选Item的ItemText setTitle(String) item.get("ItemText"); 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;Activity.xml:<RelativeLayout xmlns:android

27、=" xmlns:tools=" 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_horizont

28、al_margin" android:paddingTop="dimen/activity_vertical_margin" tools:context=".MainActivity" > <Button android:id="+id/button2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignLeft="+id/but

29、ton1" android:layout_below="+id/button1" android:layout_marginTop="21dp" android:text="Button" /> <Button android:id="+id/button3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignLeft=

30、"+id/button2" android:layout_below="+id/button2" android:layout_marginTop="29dp" android:text="Button" /> <Button android:id="+id/button4" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layo

31、ut_alignLeft="+id/button3" android:layout_below="+id/button3" android:layout_marginTop="20dp" android:text="Button" /> <Button android:id="+id/button5" android:layout_width="wrap_content" android:layout_height="wrap_content"

32、 android:layout_alignLeft="+id/button4" android:layout_below="+id/button4" android:layout_marginTop="30dp" android:text="Button" /> <Button android:id="+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_

33、content" android:layout_alignParentTop="true" android:layout_centerHorizontal="true" android:layout_marginTop="44dp" android:text="Button" /></RelativeLayout>Main.xml:<?xml version="1.0" encoding="UTF-8"?><LinearLayou

34、t xmlns:android=" xmlns:tools=" android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="vertical"> <TextView android:id="+id/username_view" android:layout_height="wrap_content" android:layout_width

35、="wrap_content" android:layout_marginLeft="20dip" android:layout_marginRight="20dip" android:text="请输入用户名：" android:textAppearance="?android:attr/textAppearanceMedium" /> <EditText android:id="+id/username_edit" android:layout_height=

36、"wrap_content" android:layout_width="fill_parent" android:layout_marginLeft="20dip" android:layout_marginRight="20dip" android:capitalize="none" android:textAppearance="?android:attr/textAppearanceMedium" /> <TextView android:id="

37、;+id/password_view" android:layout_height="wrap_content" android:layout_width="wrap_content" android:layout_marginLeft="20dip" android:layout_marginRight="20dip" android:text="请输入密码：" android:textAppearance="?android:attr/textAppearanceMedi

38、um" /> <EditText android:id="+id/password_edit" android:layout_height="wrap_content" android:layout_width="fill_parent" android:layout_marginLeft="20dip" android:layout_marginRight="20dip" android:capitalize="none" android:passwo

39、rd="true" android:textAppearance="?android:attr/textAppearanceMedium" /> </LinearLayout>实验5.4<?xml version="1.0" encoding="UTF-8"?><LinearLayout xmlns:android=" xmlns:tools=" android:layout_width="fill_parent" android:layo

40、ut_height="wrap_content" android:orientation="vertical"> <TextView android:id="+id/username_view" android:layout_height="wrap_content" android:layout_width="wrap_content" android:layout_marginLeft="20dip" android:layout_marginRight=&q

41、uot;20dip" android:text="请输入用户名：" android:textAppearance="?android:attr/textAppearanceMedium" /> <EditText android:id="+id/username_edit" android:layout_height="wrap_content" android:layout_width="fill_parent" android:layout_marginLeft=&qu

42、ot;20dip" android:layout_marginRight="20dip" android:capitalize="none" android:textAppearance="?android:attr/textAppearanceMedium" /> <TextView android:id="+id/password_view" android:layout_height="wrap_content" android:layout_width="

43、wrap_content" android:layout_marginLeft="20dip" android:layout_marginRight="20dip" android:text="请输入密码：" android:textAppearance="?android:attr/textAppearanceMedium" /> <EditText android:id="+id/password_edit" android:layout_height="wr

44、ap_content" android:layout_width="fill_parent" android:layout_marginLeft="20dip" android:layout_marginRight="20dip" android:capitalize="none" android:password="true" android:textAppearance="?android:attr/textAppearanceMedium" /><

45、/LinearLayout><RelativeLayout xmlns:android=" xmlns:tools=" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="dimen/activity_vertical_margin" android:paddingLeft="dimen/activity_horizontal_margin" a

46、ndroid:paddingRight="dimen/activity_horizontal_margin" android:paddingTop="dimen/activity_vertical_margin" tools:context=".MainActivity" > <Button android:id="+id/button2" android:layout_width="wrap_content" android:layout_height="wrap_con

47、tent" android:layout_alignLeft="+id/button1" android:layout_below="+id/button1" android:layout_marginTop="21dp" android:text="Button" /> <Button android:id="+id/button3" android:layout_width="wrap_content" android:layout_height=&

48、quot;wrap_content" android:layout_alignLeft="+id/button2" android:layout_below="+id/button2" android:layout_marginTop="29dp" android:text="Button" /> <Button android:id="+id/button4" android:layout_width="wrap_content" android:la

49、yout_height="wrap_content" android:layout_alignLeft="+id/button3" android:layout_below="+id/button3" android:layout_marginTop="20dp" android:text="Button" /> <Button android:id="+id/button5" android:layout_width="wrap_content&quo

50、t; android:layout_height="wrap_content" android:layout_alignLeft="+id/button4" android:layout_below="+id/button4" android:layout_marginTop="30dp" android:text="Button" /> <Button android:id="+id/button1" android:layout_width="wra

51、p_content" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_centerHorizontal="true" android:layout_marginTop="44dp" android:text="Button" /></RelativeLayout>package com.example.test5_new4;import a

52、ndroid.os.Bundle;import android.app.Activity;import android.app.AlertDialog;import android.content.DialogInterface;import android.content.DialogInterface.OnClickListener;import android.content.DialogInterface.OnMultiChoiceClickListener;import android.view.LayoutInflater;import android.view.Menu;impo

53、rt android.view.View;import android.widget.Button;import android.widget.Toast;public class MainActivity extends Activity Overrideprotected void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Button bth1 = (Button)findViewById(R.id.button

54、1);bth1.setOnClickListener(new View.OnClickListener() Overridepublic void onClick(View arg0) / TODO Auto-generated method stubnew AlertDialog.Builder(MainActivity.this) .setTitle("标题") .setMessage("文本对话框") .setPositiveButton("确定", null) .setNegativeButton("取消"

55、, null) .show(););Button bth2 = (Button)findViewById(R.id.button2);bth2.setOnClickListener(new View.OnClickListener() String items="亚洲","南极洲","北美洲","南美洲","欧洲","非洲","大洋洲"Overridepublic void onClick(View arg0) / TODO Auto-generated

56、method stubnew AlertDialog.Builder(MainActivity.this) .setTitle("七大洲列表") .setItems(items, null) .show(););Button bth3 = (Button)findViewById(R.id.button3);bth3.setOnClickListener(new View.OnClickListener() String items="亚洲","南极洲","北美洲","南美洲","欧洲","非洲","大洋洲"String itemsname;Overridepublic void onClick(View arg0) / TODO Auto-generated method stubnew AlertDialog.Builder(MainActivity.this) .setIcon(R.drawable.globe) .setTitle(&q