Java Android:如何检测是否加载了所有ListView对象
近一周来,我一直在想(没有成功)如何检测所有ListView对象(行)是否已加载。我的ListView是LoadMore类型(我已经将限制设置为5行,所以每5行加载5行)。我正在使用Parse.com框架。当整个列表加载后,我想删除页脚视图。有关更多信息,请参阅下面的代码 你有什么想法或建议,如何实现它 提前谢谢Java Android:如何检测是否加载了所有ListView对象,java,android,listview,footer,parse-platform,Java,Android,Listview,Footer,Parse Platform,近一周来,我一直在想(没有成功)如何检测所有ListView对象(行)是否已加载。我的ListView是LoadMore类型(我已经将限制设置为5行,所以每5行加载5行)。我正在使用Parse.com框架。当整个列表加载后,我想删除页脚视图。有关更多信息,请参阅下面的代码 你有什么想法或建议,如何实现它 提前谢谢 public class Fragment1 extends Fragment { private ListView mListView; private Animal
public class Fragment1 extends Fragment {
private ListView mListView;
private AnimalAdapter mAdapter;
ProgressBar mProgressBar;
EditText mEditText;
RelativeLayout mRelativeLayout;
ProgressBar oProgressBar;
LinearLayout mLinearLayout;
Context context;
LayoutInflater inflater;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
final View rootView = inflater.inflate(R.layout.animalsfrag, container, false);
mListView = (ListView)rootView.findViewById(R.id.animal_list);
View header = getActivity().getLayoutInflater().inflate(R.layout.header, null);
header.setPadding(2, 8, 4, 2);
mListView.setVisibility(View.INVISIBLE);
mListView.requestFocus();
mListView.addHeaderView(header);
View footer = getActivity().getLayoutInflater().inflate(R.layout.footer, null);
mListView.addFooterView(footer);
footer.setVisibility(View.VISIBLE);
mProgressBar = (ProgressBar) rootView.findViewById (R.id.loading_animals);
mProgressBar.setVisibility(View.VISIBLE);
RemoteDataTask task = new RemoteDataTask();
task.execute();
return rootView;
}
public void updateData() { //Main area no.1
mListView = (ListView)getView().findViewById(R.id.animal_list);
int limit = mListView.getCount() + 5;
ParseQuery<Animal> query = ParseQuery.getQuery(Animal.class);
query.setCachePolicy(CachePolicy.CACHE_THEN_NETWORK);
query.orderByAscending("animal");
query.setLimit(limit);
Toast.makeText(getActivity(), "now", Toast.LENGTH_SHORT).show();
query.findInBackground(new FindCallback<Animal>() {
@Override
public void done(List<Animal> animals, ParseException error) {
if(animals != null){
mAdapter.clear();
mProgressBar.setVisibility(View.INVISIBLE);
for (int i = 0; i < animals.size(); i++) {
mAdapter.add(animals.get(i));
}
}
}
});
}
private class RemoteDataTask extends AsyncTask<Void, Void, Void> {
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected Void doInBackground(Void... params) {
updateData();
return null;
}
@Override
protected void onPostExecute(Void result) {
mListView = (ListView) getView().findViewById(R.id.animal_list);
// Pass the results into ListViewAdapter.java
mAdapter = new AnimalAdapter(getActivity(), new ArrayList<Animal>());
mListView.setAdapter(mAdapter);
mListView.setVisibility(View.VISIBLE);
mListView.setTextFilterEnabled(true);
mListView.setAdapter(mAdapter);
mAdapter = new AnimalAdapter(getActivity(), new ArrayList<Animal>());
mListView = (ListView) getView().findViewById(R.id.animal_list);
mAdapter = new AnimalAdapter(getActivity(), new ArrayList<Animal>());
mListView.setAdapter(mAdapter);
mListView.setAdapter(mAdapter);
mEditText = (EditText) getView().findViewById(R.id.search_animal);
mListView.setOnScrollListener(new OnScrollListener() {
@Override //Main area no.2
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount,
int totalItemCount) {
final int lastItem = firstVisibleItem + visibleItemCount;
if(lastItem == totalItemCount) {
updateData();
}
mListView.setFooterDividersEnabled(false);
}
@Override
public void onScrollStateChanged(AbsListView view,
int scrollState) {
if (SCROLL_STATE_TOUCH_SCROLL == scrollState) {
View currentFocus = getActivity().getCurrentFocus();
if(currentFocus != null) {
currentFocus.clearFocus();
}
mEditText = (EditText) getActivity().findViewById(R.id.search_animal);
InputMethodManager imm = (InputMethodManager)getActivity().getSystemService(
Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(mEditText.getWindowToken(), 0);
}
}
});
mEditText.addTextChangedListener(new TextWatcher(){
@Override
public void afterTextChanged(Editable s) {
}
@Override
public void beforeTextChanged(CharSequence s,
int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start,
int before, int count) {
System.out.println("Text ["+s+"]");
mAdapter.getFilter().filter(s.toString());
}
});
}
}
}
公共类Fragment1扩展了Fragment{
私有列表视图;
私人动物适应学校;
ProgressBar-mProgressBar;
EditText-mEditText;
相对布局;
ProgressBar oProgressBar;
线性布局;
语境;
充气机;
@凌驾
创建视图上的公共视图(布局、充气机、视图组容器、,
Bundle savedInstanceState){
最终视图根视图=充气机。充气(R.layout.animalfrag,container,false);
mListView=(ListView)rootView.findViewById(R.id.animal_列表);
视图标题=getActivity().GetLayoutFlater().inflate(R.layout.header,null);
标题。设置填充(2,8,4,2);
mListView.setVisibility(View.INVISIBLE);
mListView.requestFocus();
mListView.addHeaderView(标题);
视图页脚=getActivity().GetLayoutFlater().inflate(R.layout.footer,null);
mListView.addFooterView(页脚);
footer.setVisibility(View.VISIBLE);
mProgressBar=(ProgressBar)rootView.findviewbyd(R.id.loading\u动物);
mProgressBar.setVisibility(View.VISIBLE);
RemoteDataTask任务=新的RemoteDataTask();
task.execute();
返回rootView;
}
公共无效更新数据(){//主区域1号
mListView=(ListView)getView().findViewById(R.id.animal_列表);
int limit=mListView.getCount()+5;
ParseQuery=ParseQuery.getQuery(Animal.class);
setCachePolicy(CachePolicy.CACHE\u然后\u网络);
查询:orderByAscending(“动物”);
query.setLimit(limit);
Toast.makeText(getActivity(),“now”,Toast.LENGTH_SHORT.show();
findInBackground(新的FindCallback(){
@凌驾
公共作废完成(列出动物,ParseException错误){
如果(动物!=null){
mAdapter.clear();
mProgressBar.setVisibility(视图.不可见);
对于(int i=0;i