Android下拉/上拉刷新ListView之Android-PullToRefresh

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

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);
	}
}

        

          
        
        
        

          

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需要的activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
    
    <com.handmark.pulltorefresh.library.PullToRefreshListView
        android:id="@+id/pull_refresh_list"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
     
     	android:divider="@android:color/black"
        android:dividerHeight="1dip"
        
        android:fastScrollEnabled="false"
        android:footerDividersEnabled="false"
        android:headerDividersEnabled="false"
        android:smoothScrollbar="true" />
</RelativeLayout>

        

          
        
        
        

          

          AI 代码解读