【android动态布局】之【ListView动态加载数据模板（使用xml布局）】

转自：http://www.apkbus.com/android-19497-1-1.html

笔者想利用xml布局文件实现一下，因为布局文件在xml文件中实现要规范一些，原理和之前那一篇是一样的，直接来代码

主布局文件other_listview.xml，注意ListView定义id的方式

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

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

android:orientation="vertical"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

>

<ListView

android:id="@android:id/list"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

/>

</LinearLayout>

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ListView里面每个Item的布局文件other_listview_item.xml，里面的ImageView使用的图片自己可以随便替换一张

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

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

android:orientation="horizontal"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

>

<ImageView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:scaleType="fitXY"

android:src="@drawable/avira_antyvir"/>

<TextView

android:id="@+id/tv"

android:layout_width="fill_parent"

android:layout_height="20dp"

android:text="@string/hello"

/>

</LinearLayout>

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再来个布局文件other_listview_footer_more.xml，这个文件就是ListView最下面那个View，当点击Button的时候显示进度条

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

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

android:orientation="vertical"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

>

<Button

android:id="@+id/button"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="更多"

/>

<LinearLayout

android:orientation="horizontal"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:gravity="center"

android:id="@+id/linearlayout">

<ProgressBar

android:layout_width="wrap_content"

android:layout_height="wrap_content"/>

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="正在获取..."/>

</LinearLayout>

</LinearLayout>

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类文件OtherListView.java

package com.focus.loading;

import android.app.ListActivity;

import android.os.Bundle;

import android.os.Handler;

import android.view.LayoutInflater;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.ViewGroup;

import android.widget.AbsListView;

import android.widget.AbsListView.OnScrollListener;

import android.widget.BaseAdapter;

import android.widget.Button;

import android.widget.LinearLayout;

import android.widget.ListView;

import android.widget.TextView;

public class OtherListView extends ListActivity implements OnScrollListener {

ListView list;

int scrollState;

int count = 40;

int lastItem;

int visibleItemCount;

Button footerButton;

LinearLayout footerProgressBarLayout;

View view;

ListAdapter listAdapter = new ListAdapter();

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.other_listview);

LayoutInflater inflater = LayoutInflater.from(this);

view = inflater.inflate(R.layout.other_listview_footer_more, null);

footerButton = (Button) view.findViewById(R.id.button);

footerProgressBarLayout = (LinearLayout) view

.findViewById(R.id.linearlayout);

footerProgressBarLayout.setVisibility(View.GONE);

footerButton.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

if (lastItem == listAdapter.count

&& scrollState == OnScrollListener.SCROLL_STATE_IDLE) {

footerButton.setVisibility(View.GONE);

footerProgressBarLayout.setVisibility(View.VISIBLE);

if (listAdapter.count <= count) {

new Handler().postDelayed(new Runnable() {

@Override

public void run() {

listAdapter.count += 10;

listAdapter.notifyDataSetChanged();

// list.setSelection(lastItem);

footerButton.setVisibility(View.VISIBLE);

footerProgressBarLayout

.setVisibility(View.GONE);

}

}, 2000);

}

}

}

});

list = getListView();

list.addFooterView(view);

list.setAdapter(listAdapter);

list.setOnScrollListener(this);

}

class ListAdapter extends BaseAdapter {

int count = 10;

@Override

public int getCount() {

return count;

}

@Override

public Object getItem(int position) {

return position;

}

@Override

public long getItemId(int position) {

return position;

}

@Override

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

LayoutInflater inflater = LayoutInflater.from(OtherListView.this);

View view = inflater.inflate(R.layout.other_listview_item, null);

TextView tv = (TextView) view.findViewById(R.id.tv);

tv.setText("Hello World " + position);

return view;

}

}

@Override

public void onScroll(AbsListView view, int firstVisibleItem,

int visibleItemCount, int totalItemCount) {

this.visibleItemCount = visibleItemCount;

lastItem = firstVisibleItem + visibleItemCount - 1;

System.out.println(listAdapter.count);

if (listAdapter.count >= count) {

list.removeFooterView(view);

}

}

@Override

public void onScrollStateChanged(AbsListView view, int scrollState) {

this.scrollState = scrollState;

}

}

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由于跟之前那篇原理一样的，所以没写注释，不懂的先看前面那篇吧http://www.cnblogs.com/and_he/archive/2011/05/30/2063230.html

效果图