转载 Android ListView滚动提示等待框

本文出自：点击打开链接
其实原理很简单，只需要设置监听listview的滚动事件即可，
01    package cn.stay.activity;
02    import java.util.ArrayList;
03    import java.util.List;
04    import com.aoran.R;
05    import android.app.Activity;
06    import android.os.Bundle;
07    import android.view.View;
08    import android.widget.AbsListView;
09    import android.widget.AbsListView.OnScrollListener;
10    import android.widget.LinearLayout;
11    import android.widget.ListView;
12    import android.widget.ProgressBar;
13     
14    /**
15     * @author riddlezhang
16     *  滚动listview提示等待框
17     */
18    public class ListView_sep extends Activity implements OnScrollListener {
19     
20        private List<String> list = new ArrayList<String>();
21        private ListView listv01;
22        private MyAdapter adapter;
23        private int current_page = 2;
24        ProgressBar progressBar;
25        private LinearLayout bottom_linear;
26        private int lastItem;
27         
28        @Override
29        protected void onCreate(Bundle savedInstanceState) {
30            // TODO Auto-generated method stub
31            super.onCreate(savedInstanceState);
32            setContentView(R.layout.main);
33     
34            listv01 = (ListView) findViewById(R.id.listv01);
35            bottom_linear=(LinearLayout) findViewById(R.id.bottom_linear);
36            for (int i = 0; i < 100; i++) {
37                list.add("i="+i);
38            }
39            adapter = new MyAdapter(ListView_sep.this, list);
40            listv01.setAdapter(adapter);
41    //      listv01.setSelection(getSingerStrs().size()-1); 设置每次最后一行被选中
42            listv01.setOnScrollListener(this);
43        }
44        @Override
45        public void onScrollStateChanged(AbsListView view, int scrollState) {
46            if (lastItem==adapter.count && scrollState == OnScrollListener.SCROLL_STATE_IDLE) {
47                if ((list.size() - current_page * 10) > 0) {
48                    bottom_linear.setVisibility(View.VISIBLE);
49                    if ((list.size() - current_page * 10) >= 10) {
50                        adapter.count += 10;
51                    } else {
52                        adapter.count += (list.size() - current_page * 10);
53                    }
54                    current_page++;
55                    adapter.notifyDataSetChanged();
56    //              bottom_linear.setVisibility(View.GONE);
57                }
58            }
59        }
60        @Override
61        public void onScroll(AbsListView view, int firstVisibleItem,
62                int visibleItemCount, int totalItemCount) {
63                lastItem=firstVisibleItem+visibleItemCount;
64        }
65    }
01    package cn.stay.activity;
02     
03    import java.util.List;
04     
05    import com.aoran.R;
06     
07    import android.content.Context;
08    import android.view.LayoutInflater;
09    import android.view.View;
10    import android.view.ViewGroup;
11    import android.widget.BaseAdapter;
12    import android.widget.TextView;
13     
14    public class MyAdapter extends BaseAdapter{
15        private Context mContext;
16        private List<String> list;
17        public int count=20;
18        private ViewHolder holder;
19         
20        public MyAdapter(Context mContext,List<String> list) {
21            this.mContext=mContext;
22            this.list=list;
23        }
24        @Override
25        public int getCount() {
26            return count;
27        }
28     
29        @Override
30        public Object getItem(int position) {
31            // TODO Auto-generated method stub
32            return list.get(position);
33        }
34     
35        @Override
36        public long getItemId(int position) {
37            return position;
38        }
39     
40        @Override
41        public View getView(int position, View convertView, ViewGroup parent) {
42            // TODO Auto-generated method stub
43            if(convertView==null || convertView.getTag()==null){
44                convertView=LayoutInflater.from(mContext).inflate(R.layout.adapter,null);
45                holder = new ViewHolder();
46                holder.adapter_tv=(TextView) convertView.findViewById(R.id.adapter_tv);
47                convertView.setTag(holder);
48                }else{
49                    holder=(ViewHolder) convertView.getTag();
50                }
51            holder.adapter_tv.setText(list.get(position));
52            return convertView;
53        }
54     
55        private class ViewHolder{
56            private TextView adapter_tv;
57        }
58    }

 
view sourceprint?
01    main.xml
02     
03    <?xml version="1.0" encoding="utf-8"?>
04    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
05        android:orientation="vertical"
06        android:layout_width="fill_parent"
07        android:layout_height="fill_parent"
08        android:background="@drawable/project_main_bg"
09        >
10        <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">
11            <ProgressBar android:layout_width="24dip" android:layout_height="24dip" android:layout_marginLeft="20dip" />
12            <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"/>
13        </LinearLayout>
14        <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"/>
15    </RelativeLayout>