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

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【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>

复制代码
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>

复制代码
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>

复制代码
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;

}

}

复制代码
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
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原文地址：https://www.cnblogs.com/xieping/p/4784527.html