Android PullToRefresh上拉和下拉刷新
发布时间：2020-12-14 23:37:33 所属栏目：Java 来源：网络整理
导读：今天PHP站长网 52php.cn把收集自互联网的代码分享给大家，仅供参考。 com.handmark.pulltorefresh.library.PullToRefreshListView android:id="@+id/list_view" android:layout_width="match_parent" android:layout_heig
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以下代码由PHP站长网 52php.cn收集自互联网 现在PHP站长网小编把它分享给大家，仅供参考 <com.handmark.pulltorefresh.library.PullToRefreshListView
android:id="@+id/list_view"
android:layout_width="match_parent"
android:layout_height="match_parent" />
2. 设置Mode? PullToRefreshListView mListView = (PullToRefreshListView) findViewById(R.id.list_view); mListView.setMode(Mode.BOTH); 可支持的Mode如下：
如果Mode设置成Mode.BOTH，需要设置监听OnRefreshListener2，并实现onPullDownToRefresh()、onPullUpToRefresh()两个方法。? 4. 具体代码如下： public class MainActivity extends Activity {
private ArrayList<String> mListItems;
private PullToRefreshListView mListView;
private SampleListAdapter mAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.sample);
// 设置初期数据
mListItems = new ArrayList<String>();
for (int i = 1; i <= 10; i++) {
mListItems.add("Item " + Integer.toString(i));
}
// 设置ListView
mListView = (PullToRefreshListView) findViewById(R.id.list_view);
mAdapter = new SampleListAdapter();
mListView.setAdapter(mAdapter);
// 设置PullToRefresh
mListView.setMode(Mode.BOTH);
mListView.setOnRefreshListener(new OnRefreshListener2<ListView>(){
// 下拉Pulling Down
@Override
public void onPullDownToRefresh(PullToRefreshBase<ListView> refreshView) {
// 下拉的时候数据重置
mListItems = new ArrayList<String>();
for (int i = 1; i <= 10; i++) {
mListItems.add("Item " + Integer.toString(i));
}
mAdapter.notifyDataSetChanged();
new FinishRefresh().execute();
}
// 上拉Pulling Up
@Override
public void onPullUpToRefresh(PullToRefreshBase<ListView> refreshView) {
// 上拉的时候添加选项
int count = mListItems.size();
mListItems.add("Item " + Integer.toString(++count));
mAdapter.notifyDataSetChanged();
new FinishRefresh().execute();
}
});
}
private class SampleListAdapter extends BaseAdapter {
@Override
public int getCount() {
return mListItems.size();
}
@Override
public Object getItem(int index) {
return mListItems.get(index);
}
@Override
public long getItemId(int index) {
return index;
}
@Override
public View getView(int index,View view,ViewGroup arg2) {
if(view == null){
LayoutInflater inflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = inflater.inflate(R.layout.list_item,null);
}
TextView textView = (TextView)view.findViewById(R.id.listItemText);
textView.setText(mListItems.get(index));
return view;
}
}
private class FinishRefresh extends AsyncTask<Void,Void,Void>{
@Override
protected Void doInBackground(Void... params) {
return null;
}
@Override
protected void onPostExecute(Void result){
mListView.onRefreshComplete();
}
}
}
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