ch013 Android ScrollView与ListView

--------------------------------------------Layout activity_main.xml--------------------------

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

xmlns:tools="http://schemas.android.com/tools"

android:id="@+id/LinearLayout1"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical" >

<ScrollView

android:id="@+id/srcollview"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:fadingEdge="none" >

<LinearLayout

android:layout_width="fill_parent"

android:layout_height="fill_parent" >

<ListView

android:id="@+id/listview"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:fadingEdge="none" >

</ListView>

</LinearLayout>

</ScrollView>

</LinearLayout>

--------------------------------------------Layout list_item.xml------------------------------

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

xmlns:tools="http://schemas.android.com/tools"

android:id="@+id/LinearLayout1"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="horizontal" android:gravity="center">

<ImageView

android:id="@+id/icon"

android:layout_width="wrap_content"

android:layout_height="wrap_content" android:src="@drawable/ic_launcher" />

<TextView

android:id="@+id/content"

android:layout_width="wrap_content"

android:layout_height="wrap_content" android:text="....................."/>

<ImageView

android:id="@+id/img"

android:layout_width="wrap_content"

android:layout_height="wrap_content" android:src="@drawable/list_arrow"/>

</LinearLayout>

--------------------------------------------drawable circle_list_middle.xml-------------------

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

</selector>

--------------------------------------------MainActivity.java-----------------------------------

package com.ch13;

import android.app.Activity;

import android.os.Bundle;

import android.widget.ListView;

/**

* 项目名称：com.ch13

* 类名称：MainActivity

* 类描述： ListView与ScrollView一起使用

* 创建人：方勇

* 创建时间：2012-11-20 下午9:16:20

public class MainActivity extends Activity {

private ListView listview;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

findViews();

setListeners();

init();

}

/* 初始化UI */

private void findViews() {

listview = (ListView) findViewById(R.id.listview);

}

/* 设置监听 */

private void setListeners() {

}

/* 初始化数据 */

private void init() {

listview.setAdapter(new MyAdapter(this));

HUtil.setListViewHeightByChildHeight(listview);

}

--------------------------------------------MyAdapter.java-------------------------------------

package com.ch13;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import android.content.Context;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.ImageView;

import android.widget.TextView;

/**

* 项目名称：com.ch13

* 类名称：MyAdapter

* 类描述：自定义适配器

* 创建人：方勇

* 创建时间：2012-11-20 上午8:44:59

public class MyAdapter extends BaseAdapter {

/*上下文*/

private Context mcontext;

/*布局管理器*/

LayoutInflater layoutInflater;

/*数据集合*/

private List<HashMap<String,Object>> list = new ArrayList<HashMap<String,Object>>();

public MyAdapter(Context context) {

super();

this.mcontext = context;

layoutInflater = LayoutInflater.from(context);

setData();

}

@Override

public int getCount() {

return list.size();

}

@Override

public Object getItem(int position) {

return list.get(position);

}

@Override

public long getItemId(int position) {

return position;

}

/*面向OOP思想*/

static class ViewHolder{

ImageView image_icon;

TextView view_content;

ImageView image_img;

}

@Override

public View getView(int position, View convertView, ViewGroup parent) {

ViewHolder holder;

/*初始化UI*/

if(null==convertView){

/*item实例化*/

convertView = layoutInflater.inflate(R.layout.list_item, null);

holder = new ViewHolder();

holder.image_icon = (ImageView) convertView.findViewById(R.id.icon);

holder.view_content = (TextView) convertView.findViewById(R.id.content);

holder.image_img = (ImageView) convertView.findViewById(R.id.img);

convertView.setTag(holder);

}else{

holder = (ViewHolder) convertView.getTag();

}

//设置背景图片

convertView.setBackgroundResource(R.drawable.circle_list_middle);

//设值

holder.image_icon.setImageResource((Integer) list.get(position).get("icon"));

holder.view_content.setText(list.get(position).get("content").toString());

holder.image_img.setImageResource((Integer) list.get(position).get("img"));

return convertView;

}

/* 初始化ListView数据 */

private void setData(){

HashMap<String,Object> map01 = new HashMap<String,Object>();

map01.put("icon", R.drawable.ic_launcher);

map01.put("content", "我的资料");

map01.put("img", R.drawable.list_arrow);

list.add(map01);

HashMap<String,Object> map02 = new HashMap<String,Object>();

map02.put("icon", R.drawable.ic_launcher);

map02.put("content", "设置");

map02.put("img", R.drawable.list_arrow);

list.add(map02);

HashMap<String,Object> map03 = new HashMap<String,Object>();

map03.put("icon", R.drawable.ic_launcher);

map03.put("content", "用户切换");

map03.put("img", R.drawable.list_arrow);

list.add(map03);

HashMap<String,Object> map04 = new HashMap<String,Object>();

map04.put("icon", R.drawable.ic_launcher);

map04.put("content", "查看消息记录");

map04.put("img", R.drawable.list_arrow);

list.add(map04);

HashMap<String,Object> map05 = new HashMap<String,Object>();

map05.put("icon", R.drawable.ic_launcher);

map05.put("content", "查看版本");

map05.put("img", R.drawable.list_arrow);

list.add(map05);

}

--------------------------------------------HUtil.java-------------------------------------------

package com.ch13;

import android.view.View;

import android.view.ViewGroup;

import android.widget.ListView;

/**

* 项目名称：com.ch13

* 类名称：HUtil

* 类描述：解决ListView与ScrollView一起使用时的ListView高度问题

* 解决思路为

* 1、获取ListView下子控件的高度+控件之间的间隔,

* 2、赋值给ListView的LayoutParams对象

* 创建人：方勇

* 创建时间：2012-11-20 上午9:32:01

public class HUtil {

/*记录总高度*/

static int totalHeight = 0;

public static void setListViewHeightByChildHeight(ListView listView){

/*得到适配器*/

MyAdapter myAdapter = (MyAdapter) listView.getAdapter();

/*遍历控件*/

for (int i = 0; i < myAdapter.getCount(); i++) {

View view = myAdapter.getView(i, null, listView);

/*测量一下子控件的高度*/

view.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);

totalHeight+=view.getMeasuredHeight();

}

/*控件之间的间隙*/

totalHeight+=listView.getDividerHeight()*(listView.getCount()-1);

/*2、赋值给ListView的LayoutParams对象*/

ViewGroup.LayoutParams params = listView.getLayoutParams();

params.height = totalHeight;

listView.setLayoutParams(params);

}

--------------------------------------------使用前的效果----------------------------------------

ch013 Android ScrollView与ListView

--------------------------------------------使用后的效果----------------------------------------

ch013 Android ScrollView与ListView

ch013 Android ScrollView与ListView

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