Android ListView滚动提示等待框

其实原理很简单，只需要设置监听listview的滚动事件即可，

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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;     } }

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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;     } }

 

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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>