android ListView的分段显示、分页显示

Java代码

package com.yangguangfu.listview;  
  
import android.app.ListActivity;  
import android.os.Bundle;  
import android.util.Log;  
import android.view.Gravity;  
import android.view.View;  
import android.view.ViewGroup;  
import android.widget.AbsListView;  
import android.widget.BaseAdapter;  
import android.widget.LinearLayout;  
import android.widget.ListView;  
import android.widget.ProgressBar;  
import android.widget.TextView;  
import android.widget.AbsListView.OnScrollListener;  
import android.widget.LinearLayout.LayoutParams;  
/** 
 *  
 * @author 阿福 
 * 
 */  
public class MainActivity extends ListActivity implements OnScrollListener {  
      
    private static final String TAG = "MainActivity";  
    private listViewAdapter adapter = new listViewAdapter();  
    private int lastItem = 0;  
    /** 
     * 设置布局显示为目标有多大就多大 
     */  
    private LayoutParams WClayoutParams =new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.WRAP_CONTENT);  
    /** 
     * 设置布局显示目标最大化 
     */  
    private LayoutParams FFlayoutParams =new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT,LinearLayout.LayoutParams.FILL_PARENT);  
      
    private ProgressBar progressBar;  
  
    protected void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
  
        Log.i(TAG, "onCreate(Bundle savedInstanceState)" );  
        //线性布局  
        LinearLayout layout = new LinearLayout(this);  
       //设置布局 水平方向  
        layout.setOrientation(LinearLayout.HORIZONTAL);  
         //进度条  
        progressBar = new ProgressBar(this);  
         //进度条显示位置  
        progressBar.setPadding(0, 0, 15, 0);  
          
        layout.addView(progressBar, WClayoutParams);  
          
        TextView textView = new TextView(this);  
        textView.setText("加载中...");  
        textView.setGravity(Gravity.CENTER_VERTICAL);  
          
        layout.addView(textView, FFlayoutParams);  
        layout.setGravity(Gravity.CENTER);  
          
        LinearLayout loadingLayout = new LinearLayout(this);  
        loadingLayout.addView(layout, WClayoutParams);  
        loadingLayout.setGravity(Gravity.CENTER);  
          
        //得到一个ListView用来显示条目  
        ListView listView = getListView();  
        //添加到脚页显示  
        listView.addFooterView(loadingLayout);  
        //  
        registerForContextMenu(listView);  
        //  
        setListAdapter(adapter);  
        listView.setOnScrollListener(this);  
    }  
  
    public void onScroll(AbsListView v, int firstVisibleItem,  
            int visibleItemCount, int totalItemCount) {  
        lastItem = firstVisibleItem + visibleItemCount - 1;  
        System.out.println("lastItem:" + lastItem);  
        Log.i(TAG, "lastItem:" + lastItem);  
          
    }  
  
    public void onScrollStateChanged(AbsListView v, int state) {  
        if (lastItem == adapter.count  
                && state == OnScrollListener.SCROLL_STATE_IDLE) {  
            adapter.count += 10;  
            adapter.notifyDataSetChanged();  
            Log.i(TAG, "lastItem:" + lastItem);  
        }  
    }  
  /** 
   * 要用用于生成显示数据 
   * @author 阿福 
   * 
   */  
    class listViewAdapter extends BaseAdapter {  
        int count = 10;  
  
        public int getCount() {  
            Log.i(TAG, "count:" + count);  
            return count;  
        }  
  
        public Object getItem(int pos) {  
            Log.i(TAG, "pos:" + pos);  
            return pos;  
        }  
  
        public long getItemId(int pos) {  
            return pos;  
        }  
  
        public View getView(int pos, View v, ViewGroup p) {  
            TextView view = new TextView(MainActivity.this);  
            view.setText("阿福播放器 " + pos);  
            Log.i(TAG, "entry: " + pos);  
            view.setTextSize(20f);  
            view.setHeight(80);  
            return view;  
        }  
    }  
}  

Java代码

package com.yangguangfu.listview;  
  
  
import android.app.ListActivity;  
import android.os.Bundle;  
import android.util.Log;  
import android.view.Gravity;  
import android.view.View;  
import android.view.ViewGroup;  
import android.widget.AbsListView;  
import android.widget.BaseAdapter;  
import android.widget.Button;  
import android.widget.LinearLayout;  
import android.widget.ListView;  
import android.widget.TextView;  
import android.widget.LinearLayout.LayoutParams;  
/** 
 *  
 * @author 阿福 
 * 
 */  
public class ButtonLoadingActivity extends ListActivity    {  
    private static final String TAG = "ButtonLoadingActivity";  
         
    private  listViewAdapter adapter = new listViewAdapter();  
    /** 
     * 设置布局显示为目标有多大就多大 
     */  
    private LayoutParams WClayoutParams =new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.WRAP_CONTENT);  
    /** 
     * 设置布局显示目标最大化 
     */  
    private LayoutParams FFlayoutParams =new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT,LinearLayout.LayoutParams.FILL_PARENT);  
      
    protected void onCreate(Bundle savedInstanceState) {  
            super.onCreate(savedInstanceState);  
             Log.i(TAG, "onCreate(Bundle savedInstanceState):" );  
              LinearLayout layout = new LinearLayout(this);  
              layout.setOrientation(LinearLayout.HORIZONTAL);  
               
              Button button = new Button(this);  
              button.setText("点击加载下五条...");  
              button.setGravity(Gravity.CENTER_VERTICAL);  
                 
              layout.addView(button,FFlayoutParams);  
              layout.setGravity(Gravity.CENTER);  
              LinearLayout loadingLayout = new LinearLayout(this);  
              loadingLayout.addView(layout,WClayoutParams);  
              loadingLayout.setGravity(Gravity.CENTER);  
                 
                 
              ListView listView = getListView();  
                 
              listView.addFooterView(loadingLayout);  
                 
              button.setOnClickListener(new Button.OnClickListener()     
              {         @Override        
                 public void onClick(View v)    
              {           
                  adapter.count += 5;    
                  Log.i(TAG, "setOnClickListener:" +  adapter.count);  
                  adapter.notifyDataSetChanged();  
                  }        
              });    
               
          setListAdapter(adapter);    
     }  
  
  
    public void onScrollStateChanged(AbsListView v, int s) {  
         Log.i(TAG, "onScrollStateChanged(AbsListView v, int s)");  
    }       
  
    class listViewAdapter extends BaseAdapter {  
        int count = 10; /* starting amount */  
  
        public int getCount() { return count; }  
        public Object getItem(int pos) { return pos; }  
        public long getItemId(int pos) { return pos; }  
  
        public View getView(int pos, View v, ViewGroup p) {  
                 TextView textView = new TextView(ButtonLoadingActivity.this);  
                 textView.setHeight(80);  
                 textView.setTextSize(20);  
                 textView.setText("阿福播放器 " + pos);  
                 Log.i(TAG, "getView:pos:" + pos);  
                return textView;  
         }  
     }  
  
  
  
}  

转自：http://yangguangfu.iteye.com/blog/832809