ListView是比较常用的控件,但一直都觉得创建ListView步骤有点繁琐,故在此总结一下,方便查阅。
程序效果是实现一个ListView,ListView里面有标题,内容和图片,并加入点击和长按响应。
首先在xml里面定义一个ListView
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout
- android:id="@+id/LinearLayout01"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent"
- xmlns:android="http://schemas.android.com/apk/res/android">
- <ListView android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:id="@+id/ListView01"
- />
- </LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:id="@+id/LinearLayout01"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<ListView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/ListView01"
/>
</LinearLayout>
定义ListView每个条目的Layout,用RelativeLayout实现:
- <?xml version="1.0" encoding="utf-8"?>
- <RelativeLayout
- android:id="@+id/RelativeLayout01"
- android:layout_width="fill_parent"
- xmlns:android="http://schemas.android.com/apk/res/android"
- android:layout_height="wrap_content"
- android:paddingBottom="4dip"
- android:paddingLeft="12dip"
- android:paddingRight="12dip">
- <ImageView
- android:paddingTop="12dip"
- android:layout_alignParentRight="true"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:id="@+id/ItemImage"
- />
- <TextView
- android:text="TextView01"
- android:layout_height="wrap_content"
- android:textSize="20dip"
- android:layout_width="fill_parent"
- android:id="@+id/ItemTitle"
- />
- <TextView
- android:text="TextView02"
- android:layout_height="wrap_content"
- android:layout_width="fill_parent"
- android:layout_below="@+id/ItemTitle"
- android:id="@+id/ItemText"
- />
- </RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
android:id="@+id/RelativeLayout01"
android:layout_width="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:paddingBottom="4dip"
android:paddingLeft="12dip"
android:paddingRight="12dip">
<ImageView
android:paddingTop="12dip"
android:layout_alignParentRight="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/ItemImage"
/>
<TextView
android:text="TextView01"
android:layout_height="wrap_content"
android:textSize="20dip"
android:layout_width="fill_parent"
android:id="@+id/ItemTitle"
/>
<TextView
android:text="TextView02"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_below="@+id/ItemTitle"
android:id="@+id/ItemText"
/>
</RelativeLayout>
最后在Activity里面调用和加入Listener,具体见注释:
- package com.ray.test;
- import java.util.ArrayList;
- import java.util.HashMap;
- import android.app.Activity;
- import android.os.Bundle;
- import android.view.ContextMenu;
- import android.view.MenuItem;
- import android.view.View;
- import android.view.ContextMenu.ContextMenuInfo;
- import android.view.View.OnCreateContextMenuListener;
- import android.widget.AdapterView;
- import android.widget.ListView;
- import android.widget.SimpleAdapter;
- import android.widget.AdapterView.OnItemClickListener;
- public class TestListView extends Activity {
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main);
-
- ListView list = (ListView) findViewById(R.id.ListView01);
-
- ArrayList<HashMap<String, Object>> listItem = new ArrayList<HashMap<String, Object>>();
- for(int i=0;i<10;i++)
- {
- HashMap<String, Object> map = new HashMap<String, Object>();
- map.put("ItemImage", R.drawable.checked);
- map.put("ItemTitle", "Level "+i);
- map.put("ItemText", "Finished in 1 Min 54 Secs, 70 Moves! ");
- listItem.add(map);
- }
-
- SimpleAdapter listItemAdapter = new SimpleAdapter(this,listItem,
- R.layout.list_items,
- new String[] {"ItemImage","ItemTitle", "ItemText"},
-
- new int[] {R.id.ItemImage,R.id.ItemTitle,R.id.ItemText}
- );
-
- list.setAdapter(listItemAdapter);
-
- list.setOnItemClickListener(new OnItemClickListener() {
- @Override
- public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
- long arg3) {
- setTitle("点击第"+arg2+"个项目");
- }
- });
-
- list.setOnCreateContextMenuListener(new OnCreateContextMenuListener() {
- @Override
- public void onCreateContextMenu(ContextMenu menu, View v,ContextMenuInfo menuInfo) {
- menu.setHeaderTitle("长按菜单-ContextMenu");
- menu.add(0, 0, 0, "弹出长按菜单0");
- menu.add(0, 1, 0, "弹出长按菜单1");
- }
- });
- }
-
- @Override
- public boolean onContextItemSelected(MenuItem item) {
- setTitle("点击了长按菜单里面的第"+item.getItemId()+"个项目");
- return super.onContextItemSelected(item);
- }
- }
package com.ray.test;
import java.util.ArrayList;
import java.util.HashMap;
import android.app.Activity;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.MenuItem;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.View.OnCreateContextMenuListener;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.AdapterView.OnItemClickListener;
public class TestListView extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//绑定Layout里面的ListView
ListView list = (ListView) findViewById(R.id.ListView01);
//生成动态数组,加入数据
ArrayList<HashMap<String, Object>> listItem = new ArrayList<HashMap<String, Object>>();
for(int i=0;i<10;i++)
{
HashMap<String, Object> map = new HashMap<String, Object>();
map.put("ItemImage", R.drawable.checked);//图像资源的ID
map.put("ItemTitle", "Level "+i);
map.put("ItemText", "Finished in 1 Min 54 Secs, 70 Moves! ");
listItem.add(map);
}
//生成适配器的Item和动态数组对应的元素
SimpleAdapter listItemAdapter = new SimpleAdapter(this,listItem,//数据源
R.layout.list_items,//ListItem的XML实现
//动态数组与ImageItem对应的子项
new String[] {"ItemImage","ItemTitle", "ItemText"},
//ImageItem的XML文件里面的一个ImageView,两个TextView ID
new int[] {R.id.ItemImage,R.id.ItemTitle,R.id.ItemText}
);
//添加并且显示
list.setAdapter(listItemAdapter);
//添加点击
list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
setTitle("点击第"+arg2+"个项目");
}
});
//添加长按点击
list.setOnCreateContextMenuListener(new OnCreateContextMenuListener() {
@Override
public void onCreateContextMenu(ContextMenu menu, View v,ContextMenuInfo menuInfo) {
menu.setHeaderTitle("长按菜单-ContextMenu");
menu.add(0, 0, 0, "弹出长按菜单0");
menu.add(0, 1, 0, "弹出长按菜单1");
}
});
}
//长按菜单响应函数
@Override
public boolean onContextItemSelected(MenuItem item) {
setTitle("点击了长按菜单里面的第"+item.getItemId()+"个项目");
return super.onContextItemSelected(item);
}
}
posted on 2013-03-04 22:16
游子 阅读(2882)
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