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。
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
<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>