Android使用ListView控件问题

Android使用ListView控件问题：

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开发环境：android 1.6 最低兼容 4.0

报错代码如下：

main.xml

 

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

 2 <LinearLayout    

 3         android:id="@+id/LinearLayout01"    

 4         android:layout_width="fill_parent"    

 5         android:layout_height="fill_parent"    

 6         xmlns:android="http://schemas.android.com/apk/res/android">  

 7            

 8         <ListView android:layout_width="wrap_content"    

 9                   android:layout_height="wrap_content"    

10                  android:id="@+id/ 代码   1 public class listview extends ListActivity { 

 2     /** Called when the activity is first created. */ 

 3    private ListView listv;

 4     @Override

 5     public void onCreate(Bundle savedInstanceState) { 

 6          super.onCreate(savedInstanceState);

 7             setContentView(R.layout.main);

 8       listv = (ListView) findViewById(R.id.mylistview);   

 9           

10    //生成动态数组，并且转载数据   

11    ArrayList<HashMap<String, String>> mylist = new ArrayList<HashMap<String, String>>();   

12    for(int i=0;i<30;i++)   

13   {   

14        HashMap<String, String> map = new HashMap<String, String>();   

15         map.put("ItemTitle", "This is Title"+i);   

16         map.put("ItemText", "This is text "+i);   

17           mylist.add(map);   

18        }   

19            //生成适配器，数组===》ListItem   

20        SimpleAdapter mSchedule = new SimpleAdapter(this, //没什么解释   

21                                                   mylist,//数据来源    

22                                                   R.layout.my_listitem,//ListItem的XML实现   

23                                                            

24                                                   //动态数组与ListItem对应的子项           

25                                                 new String[] { "ItemTitle", "ItemText"},    

26                                                           

27                                                   //ListItem的XML文件里面的两个TextView ID   

28                                                    new int[] {R.id.ItemTitle,R.id.ItemText});   

29         //添加并且显示   

30        listv.setAdapter(mSchedule);   

31 

32 

33     

34     }

35  }     ">  

11         ListView>  

12 Linear 

 

listview的布局文件 my_listview.xml

 

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

 2 <LinearLayout    

 3        android:layout_width="fill_parent"    

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

 5        android:orientation="vertical"  

 6         android:layout_height="wrap_content"    

 7        android:id="@+id/MyListItem"    

 8         android:paddingBottom="3dip"    

 9        android:paddingLeft="10dip">  

10       <TextView    

11                 android:layout_height="wrap_content"    

12                 android:layout_width="fill_parent"    

13                android:id="@+id/ItemTitle"    

14                android:textSize="30dip">  

15         TextView>  

16         <TextView    

17                 android:layout_height="wrap_content"    

18                 android:layout_width="fill_parent"    

19                 android:id="@+id/ItemText">  

20         TextView>  

21 LinearLayout>  

22  

 

java代码

 

修改后的main.xml:

 

修改后的java

 

  1 public class listview extends ListActivity { 

 2     /** Called when the activity is first created. */ 

 3    private ListView listv;

 4     @Override

 5     public void onCreate(Bundle savedInstanceState) { 

 6          super.onCreate(savedInstanceState);

 7             setContentView(R.layout.main);  

 8          listv = (ListView) findViewById(android.R.id.list);    

 9    //生成动态数组，并且转载数据   

10    ArrayList<HashMap<String, String>> mylist = new ArrayList<HashMap<String, String>>();   

11    for(int i=0;i<30;i++)   

12   {   

13        HashMap<String, String> map = new HashMap<String, String>();   

14         map.put("ItemTitle", "This is Title"+i);   

15         map.put("ItemText", "This is text "+i);   

16           mylist.add(map);   

17        }   

18            //生成适配器，数组===》ListItem   

19        SimpleAdapter mSchedule = new SimpleAdapter(this, //没什么解释   

20                                                   mylist,//数据来源    

21                                                   R.layout.my_listitem,//ListItem的XML实现   

22                                                            

23                                                   //动态数组与ListItem对应的子项           

24                                                 new String[] { "ItemTitle", "ItemText"},    

25                                                           

26                                                   //ListItem的XML文件里面的两个TextView ID   

27                                                    new int[] {R.id.ItemTitle,R.id.ItemText});   

28         //添加并且显示   

29        listv.setAdapter(mSchedule);   

30 

31 

32     

33     }

34  }