ScrollView 效果
ScrollView 说明
一个ScrollView 嵌套ListView 嵌套GridView的上拉加载更多,下拉刷新的demo。
主要是重写了GridView和LsitView中的onMeasure 方法。
写的比较简单,希望对初学者有帮助。
/***
* 主要思路是
* ScrollView 嵌套ListView 嵌套GridView的上拉加载更多,下拉刷新。
*
* 逻辑在适配器做了处理
*
* 我们只让ListView加载2个数据Item,第一个是item对象,第二个是一个对象
*
*/
public class MainActivity extends Activity implements OnHeaderRefreshListener,
OnFooterRefreshListener { MyAdapter myAdapter;
// 自定义的GridView的上下拉动刷新
private PullToRefreshView mPullToRefreshView;
private MyListView listView;
private List<Integer> data;
private List<Integer> gridViewData; @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mPullToRefreshView = (com.example.demo.PullToRefreshView) findViewById(R.id.main_pull_refresh_view);
listView = (MyListView) findViewById(R.id.gridView1);
myAdapter = new MyAdapter(this);
data = new ArrayList<Integer>();
gridViewData = new ArrayList<Integer>();
for (int i = ; i < ; i++) {
data.add(i);
} for (int i = ; i < ; i++) {
if (i % == ) {
gridViewData.add(R.drawable.pic1);
} else {
gridViewData.add(R.drawable.pic2);
} }
myAdapter.setData(data);
myAdapter.setGridViewData(gridViewData);
listView.setAdapter(myAdapter); mPullToRefreshView.setOnHeaderRefreshListener(this);
mPullToRefreshView.setOnFooterRefreshListener(this);
mPullToRefreshView.setLastUpdated(new Date().toLocaleString());
} @Override
public void onHeaderRefresh(PullToRefreshView view) {
mPullToRefreshView.postDelayed(new Runnable() {
@Override
public void run() {
mPullToRefreshView.onHeaderRefreshComplete("更新于:"
+ Calendar.getInstance().getTime().toLocaleString());
mPullToRefreshView.onHeaderRefreshComplete(); Toast.makeText(MainActivity.this, "数据刷新完成!", ).show();
} }, ); } @Override
public void onFooterRefresh(PullToRefreshView view) {
mPullToRefreshView.postDelayed(new Runnable() { @Override
public void run() {
mPullToRefreshView.onFooterRefreshComplete();
gridViewData.add(R.drawable.pic1);
myAdapter.setGridViewData(gridViewData);
Toast.makeText(MainActivity.this, "加载更多数据!", ).show();
} }, ); } /**
*
* lsitView的适配器
*
* @author lyy
*
*/
public class MyAdapter extends BaseAdapter {
Context context;
private List<Integer> data; /***
* listview item position==2
*
* GridView里面的数据
*
*/
private List<Integer> gridViewData;
private GridViewAdapter gridViewAdapter; /** ListView 的数据 **/
public void setData(List<Integer> data) {
this.data = data;
this.notifyDataSetChanged();
} /*** gridView的数据 **/ public void setGridViewData(List<Integer> gridViewData) {
this.gridViewData = gridViewData; this.notifyDataSetChanged(); } public MyAdapter(Context context) {
this.context = context; } @Override
public int getCount() {
// TODO Auto-generated method stub
return ;
} @Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return data.get(position);
} @Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
} @Override
public View getView(int position, View convertView, ViewGroup parent) { if (position == ) { return listView();
} else { return gridView();
} } public View listView() {
View view = null;
if (view == null) {
view = LayoutInflater.from(context).inflate(R.layout.item, null);
} ImageView imageView1 = (ImageView) view.findViewById(R.id.imageView1);
return view;
} public View gridView() { View view = LayoutInflater.from(context).inflate(R.layout.item1, null);
GridView myGridView = (GridView) view.findViewById(R.id.gridView1); if (gridViewAdapter == null)
gridViewAdapter = new GridViewAdapter(context); gridViewAdapter.setData(gridViewData);
myGridView.setAdapter(gridViewAdapter); myGridView.setOnItemClickListener(onItemClickListener);
return view;
} private OnItemClickListener onItemClickListener = new OnItemClickListener() { @Override
public void onItemClick(AdapterView<?> arg0, View arg1, int position,
long arg3) {
Toast.makeText(context, "你点击的是:" + position, ).show(); } };
}
ScrollView下载
http://yunpan.cn/cAF8SgMWUAXrP 提取码 917c