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最新评论
-
海尔群:
http://jingyan.baidu.com/articl ...
android加密 -
完美天龙:
------------------------- ...
asm----字节码操纵 -
houniao1990:
大神,请问 string 类型 定义为 oracle的 cha ...
hibernate注解 -
JamesQian:
Line:103
f.doFilter(msg);
是否需 ...
责任链模式_过滤器模式 -
sacoole:
好评
interview--- 如何从N个数中选出最大(小)的n个数?
数据源不同而已
1. String[]: ArrayAdapter
2. List<Map<String,?>>: SimpleAdapter
3. 数据库Cursor: SimpleCursorAdapter
使用ArrayAdapter(数组适配器)顾名思义,需要把数据放入一个数组以便显示。
android.R.layout.simple_list_item_1是系统定义好的布局文件只显示一行文字
SimpleAdapter能定义各种各样的布局出来,可以放上ImageView(图片),还可以放上Button(按钮),CheckBox(复选框)
//=============================SimpleAdapter==========================
public class List3 extends ListActivity {
List<Map<String, Object>> list;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
list = getListForSimpleAdapter(); //list为数据集合
SimpleAdapter adapter = new SimpleAdapter(this, list,
R.layout.item,
new String[] { "BigText", "LittleText", "img" },
new int[] { R.id.BigText,R.id.LittleText, R.id.img });
//可以想成把一个放好数据的布局文件放入本界面中
setListAdapter(adapter);
}
private List<Map<String, Object>> getListForSimpleAdapter() {
List<Map<String,Object>> list=newArrayList<Map<String, Object>>(3);
Map<String, Object> map = new HashMap<String, Object>();
map.put("BigText", "Android");
map.put("LittleText", "Google phone.");
map.put("img", R.drawable.n);
list.add(map);
map = new HashMap<String, Object>();
map.put("BigText", "Lenovo");
map.put("LittleText", "Ophone");
map.put("img", R.drawable.o);
list.add(map);
map = new HashMap<String, Object>();
map.put("BigText", "Droid");
map.put("LittleText", "Motorola");
map.put("img", R.drawable.droid);
list.add(map);
return list;
}
}
//==============================SimpleCursorAdapter===================
注意:SimpleCursorAdapter是和数据库有关的东西,而sqlite数据库所要求的 自动增长的 id 必须是 _id这中形式
public class List2 extends Activity {
private ListView listView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
listView=new ListView(this);
Cursorc=getContentResolver().query(People.CONTENT_URI,
null, null, null, null);
startManagingCursor(c);
ListAdapter adapter = new SimpleCursorAdapter(this,
android.R.layout.simple_list_item_1,
c,
new String[] {People.NAME} ,
new int[] {android.R.id.text1});
listView.setAdapter(adapter);
setContentView(listView);
}
}
//====================ArrayAdapter===================================
public class List1 extends Activity {
private ListVeiw listView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
listView=new ListVeiw(this);
listView.setAdapter(new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, mStrings));
setContentVieww(listView);
}
private String[] mStrings = {
"Abbaye de Belloc", "Abbaye du Mont des Cats",
"Acorn", "Adelost", "Affidelice au Chablis",
"Aisy Cendre", "Allgauer Emmentaler", "Alverca",
"Ami du Chambertin", "Anejo Enchilado", "Anneau
"Aragon", "Ardi Gasna", "Ardrahan", "Armenian
"Asadero", "Asiago", "Aubisque Pyrenees", "Autun",
"Babybel", "Baguette Laonnaise", "Bakers", "Bal"};
}
1. String[]: ArrayAdapter
2. List<Map<String,?>>: SimpleAdapter
3. 数据库Cursor: SimpleCursorAdapter
使用ArrayAdapter(数组适配器)顾名思义,需要把数据放入一个数组以便显示。
android.R.layout.simple_list_item_1是系统定义好的布局文件只显示一行文字
SimpleAdapter能定义各种各样的布局出来,可以放上ImageView(图片),还可以放上Button(按钮),CheckBox(复选框)
//=============================SimpleAdapter==========================
public class List3 extends ListActivity {
List<Map<String, Object>> list;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
list = getListForSimpleAdapter(); //list为数据集合
SimpleAdapter adapter = new SimpleAdapter(this, list,
R.layout.item,
new String[] { "BigText", "LittleText", "img" },
new int[] { R.id.BigText,R.id.LittleText, R.id.img });
//可以想成把一个放好数据的布局文件放入本界面中
setListAdapter(adapter);
}
private List<Map<String, Object>> getListForSimpleAdapter() {
List<Map<String,Object>> list=newArrayList<Map<String, Object>>(3);
Map<String, Object> map = new HashMap<String, Object>();
map.put("BigText", "Android");
map.put("LittleText", "Google phone.");
map.put("img", R.drawable.n);
list.add(map);
map = new HashMap<String, Object>();
map.put("BigText", "Lenovo");
map.put("LittleText", "Ophone");
map.put("img", R.drawable.o);
list.add(map);
map = new HashMap<String, Object>();
map.put("BigText", "Droid");
map.put("LittleText", "Motorola");
map.put("img", R.drawable.droid);
list.add(map);
return list;
}
}
//==============================SimpleCursorAdapter===================
注意:SimpleCursorAdapter是和数据库有关的东西,而sqlite数据库所要求的 自动增长的 id 必须是 _id这中形式
public class List2 extends Activity {
private ListView listView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
listView=new ListView(this);
Cursorc=getContentResolver().query(People.CONTENT_URI,
null, null, null, null);
startManagingCursor(c);
ListAdapter adapter = new SimpleCursorAdapter(this,
android.R.layout.simple_list_item_1,
c,
new String[] {People.NAME} ,
new int[] {android.R.id.text1});
listView.setAdapter(adapter);
setContentView(listView);
}
}
//====================ArrayAdapter===================================
public class List1 extends Activity {
private ListVeiw listView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
listView=new ListVeiw(this);
listView.setAdapter(new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, mStrings));
setContentVieww(listView);
}
private String[] mStrings = {
"Abbaye de Belloc", "Abbaye du Mont des Cats",
"Acorn", "Adelost", "Affidelice au Chablis",
"Aisy Cendre", "Allgauer Emmentaler", "Alverca",
"Ami du Chambertin", "Anejo Enchilado", "Anneau
"Aragon", "Ardi Gasna", "Ardrahan", "Armenian
"Asadero", "Asiago", "Aubisque Pyrenees", "Autun",
"Babybel", "Baguette Laonnaise", "Bakers", "Bal"};
}
发表评论
-
EditText失去焦点
2011-12-25 13:57 1062<LinearLayout andr ... -
调用照相机和相册
2011-12-21 19:26 1447直接下代码看吧。。 ... -
wifi流程详细分析
2011-12-09 23:56 10883一.启动wifi服务 1.在 S ... -
Android WifiManager 常量
2011-12-09 00:20 5989ACTION_PICK_WIFI_NETWORK Activ ... -
android 探索首选项框架xxxPreference
2011-12-08 20:50 1718http://blog.csdn.net/qinjuning/ ... -
Wifi
2011-12-02 15:02 1686. Confirm if Wifi is On Usin ... -
Tab
2011-12-01 16:02 1243public class MyTab extends ... -
color
2011-12-01 10:48 1093<?xml version="1.0&qu ... -
EditText属性解释
2011-12-01 09:31 2347EditText继承关系:View-->TextView ... -
Android之Inflate()方法用途
2011-11-30 10:40 3177原文: Inflate()作用就是将xml定义的一个布局找出 ... -
android 自定义listview无法响应点击事件OnItemClickListener
2011-11-29 22:34 2764如果你的自定义ListViewItem中有Button或者 ... -
事件event
2011-11-29 22:34 996private class OnItemClickLis ... -
gridView ---图片显示类九宫格
2011-12-01 09:23 3137<GridView xmlns:android= ... -
Image gallery
2011-11-25 14:36 5<ImageSwitcher ... -
Image gallery
2011-11-25 14:36 1088public class ImageShowActiv ... -
Image gallery
2011-11-25 14:36 4public class ImageShowActiv ... -
Image gallery
2011-11-25 14:36 4public class ImageShowActiv ... -
Image gallery
2011-11-25 14:36 4public class ImageShowActiv ... -
Menu
2011-11-25 11:22 1024按menu按钮弹出来的东西 public static ... -
listView
2011-11-25 10:35 2166android.R.layout.simple_list_it ...
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NULL 博文链接:https://2528.iteye.com/blog/838329
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