Android下拉/上拉刷新ListView之Android-PullToRefresh

妖狐艹你老母 2023-10-16 21:16 55阅读 0赞

**Android下拉/上拉刷新ListView之Android-PullToRefresh**

Android下拉和上拉刷新ListView列表内容的的一个优秀开源框架，在github上的项目链接地址：[https://github.com/chrisbanes/Android-PullToRefresh][https_github.com_chrisbanes_Android-PullToRefresh]

该PullToRefresh第三方控件功能强大，使用方便。  
具体使用方法：

（1）首先到github上把该项目下载解压，导入到Eclipse的工程中。  
（2）将Android-PullToRefresh作为一个lib引用到自己的项目中。  
然后直接使用即可。  
现在给出一个Demo。

package zhangphil.pulltorefresh;
    
    import java.util.LinkedList;
    
    import com.handmark.pulltorefresh.library.PullToRefreshBase;
    import com.handmark.pulltorefresh.library.PullToRefreshBase.Mode;
    import com.handmark.pulltorefresh.library.PullToRefreshBase.OnLastItemVisibleListener;
    import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener2;
    import com.handmark.pulltorefresh.library.PullToRefreshListView;
    
    import android.support.v7.app.ActionBarActivity;
    import android.widget.ArrayAdapter;
    import android.widget.ListView;
    import android.widget.Toast;
    import android.os.Bundle;
    import android.os.Handler;
    
    public class MainActivity extends ActionBarActivity {
    
    	private PullToRefreshListView mPullRefreshListView;
    	private LinkedList<String> mListItems;
    	private ArrayAdapter<String> mAdapter;
    
    	// 数据
    	private int DATA = 0;
    
    	@Override
    	protected void onCreate(Bundle savedInstanceState) {
    		super.onCreate(savedInstanceState);
    		setContentView(R.layout.activity_main);
    
    		mPullRefreshListView = (PullToRefreshListView) findViewById(R.id.pull_refresh_list);
    
    		// Mode.BOTH：支持下拉和上拉刷新。
    		mPullRefreshListView.setMode(Mode.BOTH);
    
    		mPullRefreshListView
    				.setOnRefreshListener(new OnRefreshListener2<ListView>() {
    
    					// 下拉
    					@Override
    					public void onPullDownToRefresh(
    							PullToRefreshBase<ListView> refreshView) {
    						Toast.makeText(getApplicationContext(), "下拉刷新",
    								Toast.LENGTH_SHORT).show();
    
    						addItem();
    					}
    
    					// 上拉
    					@Override
    					public void onPullUpToRefresh(
    							PullToRefreshBase<ListView> refreshView) {
    						Toast.makeText(getApplicationContext(), "上拉刷新",
    								Toast.LENGTH_SHORT).show();
    
    						addItem();
    					}
    				});
    
    		// 列表到底，即看到最后一个元素。
    		mPullRefreshListView
    				.setOnLastItemVisibleListener(new OnLastItemVisibleListener() {
    
    					@Override
    					public void onLastItemVisible() {
    						Toast.makeText(getApplication(), "已经到底！",
    								Toast.LENGTH_SHORT).show();
    					}
    				});
    
    		ListView actualListView = mPullRefreshListView.getRefreshableView();
    
    		mListItems = new LinkedList<String>();
    		mAdapter = new ArrayAdapter<String>(this,
    				android.R.layout.simple_list_item_1, mListItems);
    		actualListView.setAdapter(mAdapter);
    	}
    
    	// 添加数据
    	private void addItem() {
    
    		new Handler().postDelayed(new Runnable() {
    
    			@Override
    			public void run() {
    				mListItems.add((DATA++) + "");
    
    				mAdapter.notifyDataSetChanged();
    				mPullRefreshListView.onRefreshComplete();
    			}
    		}, 1000);
    	}
    }

需要的activity\_main.xml

[https_github.com_chrisbanes_Android-PullToRefresh]: https://github.com/chrisbanes/Android-PullToRefresh