本文实例讲述了Android编程实现ListView滚动提示等待框功能。分享给大家供大家参考，具体如下：
其实原理很简单，只需要设置监听listview的滚动事件即可
file1：
package cn.stay.activity; import java.util.ArrayList; import java.util.List; import com.aoran.R; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.AbsListView; import android.widget.AbsListView.OnScrollListener; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.ProgressBar; /** * @author riddlezhang * 滚动listview提示等待框 */ public class ListView_sep extends Activity implements OnScrollListener { private List<String> list = new ArrayList<String>(); private ListView listv01; private MyAdapter adapter; private int current_page = 2; ProgressBar progressBar; private LinearLayout bottom_linear; private int lastItem; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.main); listv01 = (ListView) findViewById(R.id.listv01); bottom_linear=(LinearLayout) findViewById(R.id.bottom_linear); for (int i = 0; i < 100; i++) { list.add("i="+i); } adapter = new MyAdapter(ListView_sep.this, list); listv01.setAdapter(adapter); // listv01.setSelection(getSingerStrs().size()-1); 设置每次最后一行被选中 listv01.setOnScrollListener(this); } @Override public void onScrollStateChanged(AbsListView view, int scrollState) { if (lastItem==adapter.count && scrollState == OnScrollListener.SCROLL_STATE_IDLE) { if ((list.size() - current_page * 10) > 0) { bottom_linear.setVisibility(View.VISIBLE); if ((list.size() - current_page * 10) >= 10) { adapter.count += 10; } else { adapter.count += (list.size() - current_page * 10); } current_page++; adapter.notifyDataSetChanged(); // bottom_linear.setVisibility(View.GONE); } } } @Override public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { lastItem=firstVisibleItem+visibleItemCount; } }
file2：
package cn.stay.activity; import java.util.List; import com.aoran.R; import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.TextView; public class MyAdapter extends BaseAdapter{ private Context mContext; private List<String> list; public int count=20; private ViewHolder holder; public MyAdapter(Context mContext,List<String> list) { this.mContext=mContext; this.list=list; } @Override public int getCount() { return count; } @Override public Object getItem(int position) { // TODO Auto-generated method stub return list.get(position); } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub if(convertView==null || convertView.getTag()==null){ convertView=LayoutInflater.from(mContext).inflate(R.layout.adapter,null); holder = new ViewHolder(); holder.adapter_tv=(TextView) convertView.findViewById(R.id.adapter_tv); convertView.setTag(holder); }else{ holder=(ViewHolder) convertView.getTag(); } holder.adapter_tv.setText(list.get(position)); return convertView; } private class ViewHolder{ private TextView adapter_tv; } }
file3：
main.xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="@drawable/project_main_bg" > <LinearLayout android:id="@+id/bottom_linear" android:layout_alignParentBottom="true" android:layout_width="fill_parent" android:layout_height="50dip" android:gravity="center" android:visibility="gone"> <ProgressBar android:layout_width="24dip" android:layout_height="24dip" android:layout_marginLeft="20dip" /> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="正在加载，请稍后。。。" android:textColor="#FFFFFF" android:textSize="20sp" android:gravity="center"/> </LinearLayout> <ListView android:id="@+id/listv01" android:background="@null" android:layout_above="@id/bottom_linear" android:layout_width="fill_parent" android:layout_height="wrap_content" android:listSelector="#00000000" android:cacheColorHint="#00000000"/> </RelativeLayout>
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