[转]listview学习

转子：http://www.apkbus.com/forum.php?mod=viewthread&tid=94324

1、 ListView单行显示（simple_list_item_1）代码：

1. public class myListItem1 extends Activity{
   
2. @Override
   
3. public void onCreate(Bundle savedInstanceState){
   
4. super.onCreate(savedInstanceState);
   
5. 
   
6. ListView listView = new ListView(this);
   
7. 
   
8. List<Map<String, String>> mList = new ArrayList<Map<String, String>>();
   
9. for(int i=0; i<10; i++){
   
10. Map<String, String> map = new HashMap<String, String>();
    
11. map.put("TITLE", "Test Title");
    
12. map.put("CONTENT", "Test Content");
    
13. mList.add(map);
    
14. }
    
15. 
    
16. SimpleAdapter adapter = new SimpleAdapter(this,
    
17. mList,
    
18. android.R.layout.simple_list_item_1,         // List 显示一行item1
    
19. new String[]{ "CONTENT" },         // "TITLE",
    
20. new int[]{ android.R.id.text1 }
    
21. );
    
22. 
    
23. listView.setAdapter(adapter);
    
24. setContentView(listView);
    
25. }
    
26. }

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效果：

2、 ListView双行显示（simple_list_item_2）代码：

1. public class myListItem2 extends Activity{
   
2. @Override
   
3. public void onCreate(Bundle savedInstanceState){
   
4. super.onCreate(savedInstanceState);
   
5. 
   
6. ListView listView = new ListView(this);
   
7. 
   
8. List<Map<String, String>> mList = new ArrayList<Map<String, String>>();
   
9. for(int i=0; i<10; i++){
   
10. Map<String, String> map = new HashMap<String, String>();
    
11. map.put("TITLE", "Test Title");
    
12. map.put("CONTENT", "Test Content");
    
13. mList.add(map);
    
14. }
    
15. 
    
16. SimpleAdapter adapter = new SimpleAdapter(this,
    
17. mList,
    
18. android.R.layout.simple_list_item_2,         // List 显示两行item1、item2
    
19. new String[]{ "TITLE", "CONTENT" },
    
20. new int[]{ android.R.id.text1, android.R.id.text2 }
    
21. );
    
22. 
    
23. listView.setAdapter(adapter);
    
24. setContentView(listView);
    
25. }
    
26. }

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效果：

3、 ListView自定义显示代码：

1. public class MyList extends Activity {
   
2. @Override
   
3. public void onCreate(Bundle savedInstanceState) {
   
4. super.onCreate(savedInstanceState);
   
5. setContentView(R.layout.mylist);
   
6. 
   
7. List<Map<String, Object>> mList = new ArrayList<Map<String, Object>>();
   
8. for (int i = 0; i < 10; i++) {
   
9. Map<String, Object> map = new HashMap<String, Object>();
   
10. map.put("PIC", R.drawable.pic);         // 加载图片资源
    
11. map.put("TITLE", "Test Title");
    
12. map.put("CONTENT", "Test Content");
    
13. mList.add(map);
    
14. }
    
15. 
    
16. SimpleAdapter adapter = new SimpleAdapter(this,
    
17. mList,
    
18. R.layout.listitem,         // 自定义布局格式
    
19. new String[] { "PIC", "TITLE", "CONTENT" },
    
20. new int[] { R.id.listitem_pic, R.id.listitem_title, R.id.listitem_content }
    
21. );
    
22. 
    
23. ListView listView = (ListView) findViewById(R.id.list);
    
24. listView.setAdapter(adapter);
    
25. }
    
26. }

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自定义的 listitem.xml

1. <?xml version="1.0" encoding="utf-8"?>
   
2. 
   
3. <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
   
4. android:layout_width="fill_parent"
   
5. android:layout_height="?android:attr/listPreferredItemHeight">
   
6. 
   
7. <ImageView android:id="@+id/listitem_pic"
   
8. android:layout_width="wrap_content"
   
9. android:layout_height="fill_parent"
   
10. android:layout_alignParentTop="true"
    
11. android:layout_alignParentBottom="true"
    
12. android:adjustViewBounds="true"
    
13. android:padding="10dip" />
    
14. 
    
15. <TextView android:id="@+id/listitem_title"
    
16. android:layout_width="wrap_content"
    
17. android:layout_height="wrap_content"
    
18. android:layout_toRightOf="@id/listitem_pic"
    
19. android:layout_alignParentRight="true"
    
20. android:layout_alignParentTop="true"
    
21. android:layout_alignWithParentIfMissing="true"
    
22. android:gravity="center_vertical"
    
23. android:textSize="22sp" />
    
24. 
    
25. <TextView android:id="@+id/listitem_content"
    
26. android:layout_width="fill_parent"
    
27. android:layout_height="wrap_content"
    
28. android:layout_toRightOf="@id/listitem_pic"
    
29. android:layout_alignParentBottom="true"
    
30. android:layout_alignParentRight="true"
    
31. android:layout_below="@id/listitem_title"
    
32. android:singleLine="true"
    
33. android:ellipsize="marquee"
    
34. android:textSize="14sp" />
    
35. </RelativeLayout>

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效果：

4、 GridView自定义显示代码：

1. public class MyGrid extends Activity {
   
2. @Override
   
3. public void onCreate(Bundle savedInstanceState) {
   
4. super.onCreate(savedInstanceState);
   
5. setContentView(R.layout.mygrid);
   
6. 
   
7. List<Map<String, Object>> mList = new ArrayList<Map<String, Object>>();
   
8. for (int i = 0; i < 10; i++) {
   
9. Map<String, Object> map = new HashMap<String, Object>();
   
10. map.put("PIC", R.drawable.pic);         // 加载图片资源
    
11. map.put("TITLE", "Test Title");
    
12. mList.add(map);
    
13. }
    
14. SimpleAdapter adapter = new SimpleAdapter(this,
    
15. mList, R.layout.griditem,         // 自定义布局格式
    
16. new String[] { "PIC", "TITLE" },
    
17. new int[] { R.id.griditem_pic, R.id.griditem_title, }
    
18. );
    
19. 
    
20. GridView gridView = (GridView) findViewById(R.id.grid);
    
21. gridView.setAdapter(adapter);
    
22. }
    
23. }

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自定义的 gridview.xml

1. <?xml version="1.0" encoding="utf-8"?>
   
2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   
3. android:layout_height="fill_parent"
   
4. android:layout_width="fill_parent"
   
5. android:orientation="vertical">
   
6. 
   
7. <ImageView android:id="@+id/griditem_pic"
   
8. android:layout_width="wrap_content"
   
9. android:layout_height="wrap_content"
   
10. android:layout_gravity="center_horizontal">
    
11. </ImageView>
    
12. 
    
13. <TextView android:id="@+id/griditem_title"
    
14. android:layout_width="wrap_content"
    
15. android:layout_height="wrap_content"
    
16. android:layout_gravity="center_horizontal">
    
17. </TextView>
    
18. </LinearLayout>

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效果：

mySimpleAdapter.7z.zip (43.71 KB, 下载次数: 207)