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 mListItems;
private ArrayAdapter 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() {
// 下拉
@Override
public void onPullDownToRefresh(
PullToRefreshBase refreshView) {
Toast.makeText(getApplicationContext(), "下拉刷新",
Toast.LENGTH_SHORT).show();
addItem();
}
// 上拉
@Override
public void onPullUpToRefresh(
PullToRefreshBase 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();
mAdapter = new ArrayAdapter(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
android:layout_width="match_parent"
android:layout_height="match_parent" >
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" />
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