android - 如何在Android应用程序中实现下拉刷新

Question

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Answer 1

可以引用this视频和this页面(带有代码)来实现它，因为在 android 中还没有直接控件

一些 fragment : 在 XML 中:

<!--
  The PullToRefresh-ListView replaces a standard ListView widget,
  and has all the features android.widget.ListView has.
-->
<eu.erikw.PullToRefreshListView
    android:id="@+id/pull_to_refresh_listview"
    android:layout_height="fill_parent"
    android:layout_width="fill_parent" />

关于 Activity :

// Set a listener to be invoked when the list should be refreshed.
PullToRefreshListView pullToRefreshView = (PullToRefreshListView) findViewById(R.id.pull_to_refresh_listview);
pullToRefreshView.setOnRefreshListener(new OnRefreshListener<ListView>() {
    @Override
    public void onRefresh(PullToRefreshBase<ListView> refreshView) {
        // Do work to refresh the list here.
        new GetDataTask().execute();
    }
});

private class GetDataTask extends AsyncTask<Void, Void, String[]> {
    ...
    @Override
    protected void onPostExecute(String[] result) {
        // Call onRefreshComplete when the list has been refreshed.
        pullToRefreshView.onRefreshComplete();
        super.onPostExecute(result);
    }
}