SwipeRefreshLayout初体验

swipeRefreshLayout的使用

swipeRefreshLayout是google加的一个下拉控件，放在 android-support-v4.jar包里。给listView加下拉的步骤：

首先是布局:

<android.support.v4.widget.SwipeRefreshLayout
    android:id="@+id/refresh_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <ListView
      android:id="@+id/listview"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:cacheColorHint="@android:color/transparent" >
    </ListView>
  </android.support.v4.widget.SwipeRefreshLayout>

然后是activity文件：

implements SwipeRefreshLayout.OnRefreshListener

private void initView() {
    adapter = new RecordAdapter(list, getApplicationContext());
    listView.setAdapter(adapter);
    swipeLayout.setColorSchemeResources(R.color.back_global_light);
    swipeLayout.setOnRefreshListener(this);
    swipeLayout.setOnLoadListener(this);

}

@Override
public void onRefresh() {
    swipeLayout.postDelayed(new Runnable() {

        @Override
        public void run() {
            handler.sendEmptyMessage(0);
        }
    }, 1500);
}

private MyHandler handler = new MyHandler();

class MyHandler extends Handler {
    @Override
    public void handleMessage(Message msg) {
        switch (msg.what) {
            case 0:
                if (NetWorkHelper.isConnected(getActivity())) {
                    page = 0;
                    list.clear();
                    lunBoBeanList.clear();
                    lunBo_Url_List.clear();
                    initData();
                    lunBoinitData();
                } else {
                    if (jsonString == null || "".equals(jsonString) || lunBojsonString == null || "".equals(lunBojsonString)) {
                        showToast(getString(R.string.cache_no_network));
                    } else {
                        getJSon(jsonString);
                        getLunBoJSon(lunBojsonString);
                    }
                }
                swipeLayout.setRefreshing(false);
                adapter.notifyDataSetChanged();
                break;
            default:
                break;
        }
    }

根据具体作调整，比较简单。