android - 如何在 android 中给 ListView 下拉刷新功能

Question

如何在 android 中创建下拉刷新列表？

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.pull_to_refresh);

    // Set a listener to be invoked when the list should be refreshed.
    ((PullToRefreshListView) getListView()).setOnRefreshListener(new OnRefreshListener() {
        @Override
        public void onRefresh() {
            // Do work to refresh the list here.
            new GetDataTask().execute();
        }
    });

    mListItems = new LinkedList<String>();
    mListItems.addAll(Arrays.asList(mStrings));

    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
            android.R.layout.simple_list_item_1, mListItems);

    setListAdapter(adapter);
}`

Answer 1

这不是安卓设计模式。然而，this优秀的库让你轻松做到。看看例子。

希望我有所帮助。

编辑 -- 12/06/2015 -- 忽略之前的声明:

现在，Android 上的 SDK 完全支持这种设计模式。

很简单，你需要用到一个SwipeRefreshLayout作为列表的父 View (或您可能想要刷新的其他数据)。您可以将任何 View 作为 subview ，它将为该 View 创建一个下拉刷新动画。

之后，你只需要执行SwipeRefreshLayout.OnRefreshListener处理实际数据刷新的网络代码:

public class MainActivity extends FragmentActivity implements OnRefreshListener {

private SwipeRefreshLayout _pullToRefreshLayout;

@Override
protected void onCreate(Bundle savedInstanceState) {
    setContentView(R.layout.activity_main);

    _pullToRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipe_layout);
    _pullToRefreshLayout.setOnRefreshListener(this);

    super.onCreate(savedInstanceState);
}

@Override
public void onRefresh() {
    //When this is called, your view has a little loader showing to show the user that a network call is in progress
    Log.i("SO17065814", "Starting refresh...");

    new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
            mSwipeRefreshLayout.setRefreshing(false); //This stops the refresh animation
            Log.i("SO17065814", "Ending refresh...");
        }
    }, 5000);
}