实现搜索里面的ListView片段 [英] Implement Search in ListView inside Fragment
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问题描述
嗨我试图实现建成一个片段列表视图搜索功能
ListView控件工作正常，但是当我在的EditText键入要搜索消失
Hey guys i am trying to implement search functionality in a listview built into a fragment The listview is working fine but when i type on the edittext to search it disappears
我的code：
public class DrinksFragment extends Fragment {
private View rootView;
private ArrayAdapter<DrinksList> adapter;
private List<DrinksList> drinks;
private ListView lv;
ArrayList<DrinksList> mAllData;
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.activity_drinks_fragment, container, false);
populateDrinksList();
doSearch();
return rootView;
}
private void doSearch() {
final EditText et = (EditText)rootView.findViewById(R.id.searchListDrinks);
et.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
String text = et.getText().toString().toLowerCase(Locale.getDefault());
adapter.filter(text);
}
});
}
private void populateDrinksList() {
drinks = new ArrayList<DrinksList>();
drinks.add(new DrinksList(R.drawable.coca, "Coca Cola", 2.50));
drinks.add(new DrinksList(R.drawable.cocalight, "Coca Cola Light", 2.50));
drinks.add(new DrinksList(R.drawable.cocazero, "Coca Cola Zero", 2.50));
drinks.add(new DrinksList(R.drawable.orange, "Fanta Orange", 2.50));
drinks.add(new DrinksList(R.drawable.lemon, "Fanta Lemon", 2.50));
drinks.add(new DrinksList(R.drawable.ble, "Fanta Blue", 2.50));
drinks.add(new DrinksList(R.drawable.sprite, "Sprite", 2.50));
drinks.add(new DrinksList(R.drawable.soda, "Soda Water", 2.50));
drinks.add(new DrinksList(R.drawable.tonic, "Tonic Water", 2.50));
drinks.add(new DrinksList(R.drawable.ioli, "Sparkling Water Ioli", 2.50));
drinks.add(new DrinksList(R.drawable.perrier, "Sparkling Water Perrier", 2.50));
drinks.add(new DrinksList(R.drawable.nero, "Still Water", 2.00));
drinks.add(new DrinksList(R.drawable.redbull, "Red Bull", 4.00));
drinks.add(new DrinksList(R.drawable.zelita, "Zelita", 2.50));
lv = (ListView)rootView.findViewById(R.id.drinksListView);
adapter = new MyCustomDrinksListAdapter(getActivity().getApplicationContext(), R.layout.list_item, drinks);
lv.setAdapter(adapter);
}
}public class DrinksFragment extends Fragment {
private View rootView;
private ArrayAdapter<DrinksList> adapter;
private List<DrinksList> drinks;
private ListView lv;
ArrayList<DrinksList> mAllData;
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.activity_drinks_fragment, container, false);
populateDrinksList();
doSearch();
return rootView;
}
private void doSearch() {
final EditText et = (EditText)rootView.findViewById(R.id.searchListDrinks);
et.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
DrinksFragment.this.adapter.getFilter().filter(s);
}
@Override
public void afterTextChanged(Editable s) {
}
});
}
private void populateDrinksList() {
drinks = new ArrayList<DrinksList>();
drinks.add(new DrinksList(R.drawable.coca, "Coca Cola", 2.50));
drinks.add(new DrinksList(R.drawable.cocalight, "Coca Cola Light", 2.50));
drinks.add(new DrinksList(R.drawable.cocazero, "Coca Cola Zero", 2.50));
drinks.add(new DrinksList(R.drawable.orange, "Fanta Orange", 2.50));
drinks.add(new DrinksList(R.drawable.lemon, "Fanta Lemon", 2.50));
drinks.add(new DrinksList(R.drawable.ble, "Fanta Blue", 2.50));
drinks.add(new DrinksList(R.drawable.sprite, "Sprite", 2.50));
drinks.add(new DrinksList(R.drawable.soda, "Soda Water", 2.50));
drinks.add(new DrinksList(R.drawable.tonic, "Tonic Water", 2.50));
drinks.add(new DrinksList(R.drawable.ioli, "Sparkling Water Ioli", 2.50));
drinks.add(new DrinksList(R.drawable.perrier, "Sparkling Water Perrier", 2.50));
drinks.add(new DrinksList(R.drawable.nero, "Still Water", 2.00));
drinks.add(new DrinksList(R.drawable.redbull, "Red Bull", 4.00));
drinks.add(new DrinksList(R.drawable.zelita, "Zelita", 2.50));
lv = (ListView)rootView.findViewById(R.id.drinksListView);
adapter = new MyCustomDrinksListAdapter(getActivity().getApplicationContext(), R.layout.list_item, drinks);
lv.setAdapter(adapter);
}
}
我的适配器：
public class MyCustomDrinksListAdapter extends ArrayAdapter<DrinksList> {
private List<DrinksList> items = null;
private ArrayList<DrinksList> arraylist;
public MyCustomDrinksListAdapter(Context context, int layoutId, List<DrinksList> items) {
super(context, layoutId, items);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View arrayView = convertView;
if(arrayView == null){
LayoutInflater vi;
vi = LayoutInflater.from(getContext());
arrayView = vi.inflate(R.layout.list_item, parent, false);
}
DrinksList currentPosition = getItem(position);
if(currentPosition != null){
ImageView image = (ImageView)arrayView.findViewById(R.id.product_image_coffee);
image.setImageResource(currentPosition.getImage());
TextView name = (TextView)arrayView.findViewById(R.id.product_name_coffee);
name.setText(currentPosition.getName());
TextView price = (TextView)arrayView.findViewById(R.id.product_price_coffee);
price.setText(String.format("%.2f", currentPosition.getPrice()));
}
return arrayView;
}
public void filter(String charText) {
charText = charText.toLowerCase(Locale.getDefault());
items.clear();
if (charText.length() == 0) {
items.addAll(arraylist);
} else {
for (DrinksList wp : arraylist) {
if (wp.getName().toLowerCase(Locale.getDefault())
.contains(charText)) {
items.add(wp);
}
}
}
notifyDataSetChanged();
}
}
我试过之后的Android开发者的例子，但我不能。
提前致谢！！
任何想法??
I tried following the android developers example but i couldnt. Thanks in advance!! any ideas??
推荐答案
相反适配器类添加过滤器的方法。 ..添加它在你分段..这样的..
Instead of adding filter method in Adapter class. .. add it in you fragment.. like this..
public class DrinksFragment extends Fragment {
private View rootView;
private ArrayAdapter<DrinksList> adapter;
private List<DrinksList> drinks;
private ListView lv;
ArrayList<DrinksList> mAllData=new ArrayList<DrinksList>();
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.activity_drinks_fragment, container, false);
populateDrinksList();
doSearch();
return rootView;
}
private void doSearch() {
final EditText et = (EditText)rootView.findViewById(R.id.searchListDrinks);
et.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
String text = et.getText().toString().toLowerCase(Locale.getDefault());
filter(text);
}
});
}
private void populateDrinksList() {
drinks = new ArrayList<DrinksList>();
drinks.add(new DrinksList(R.drawable.coca, "Coca Cola", 2.50));
drinks.add(new DrinksList(R.drawable.cocalight, "Coca Cola Light", 2.50));
drinks.add(new DrinksList(R.drawable.cocazero, "Coca Cola Zero", 2.50));
drinks.add(new DrinksList(R.drawable.orange, "Fanta Orange", 2.50));
drinks.add(new DrinksList(R.drawable.lemon, "Fanta Lemon", 2.50));
drinks.add(new DrinksList(R.drawable.ble, "Fanta Blue", 2.50));
drinks.add(new DrinksList(R.drawable.sprite, "Sprite", 2.50));
drinks.add(new DrinksList(R.drawable.soda, "Soda Water", 2.50));
drinks.add(new DrinksList(R.drawable.tonic, "Tonic Water", 2.50));
drinks.add(new DrinksList(R.drawable.ioli, "Sparkling Water Ioli", 2.50));
drinks.add(new DrinksList(R.drawable.perrier, "Sparkling Water Perrier", 2.50));
drinks.add(new DrinksList(R.drawable.nero, "Still Water", 2.00));
drinks.add(new DrinksList(R.drawable.redbull, "Red Bull", 4.00));
drinks.add(new DrinksList(R.drawable.zelita, "Zelita", 2.50));
mAllData.addAll(drinks);
lv = (ListView)rootView.findViewById(R.id.drinksListView);
adapter = new MyCustomDrinksListAdapter(getActivity().getApplicationContext(), R.layout.list_item, drinks);
lv.setAdapter(adapter);
}
public void filter(String charText) {
charText = charText.toLowerCase(Locale.getDefault());
drinks .clear();
if (charText.length() == 0) {
drinks.addAll(mAllData);
} else {
for (DrinksList wp : mAllData) {
if (wp.getName().toLowerCase(Locale.getDefault())
.contains(charText)) {
drinks .add(wp);
}
}
}
notifyDataSetChanged();
}
}
和你适配器类将保持原样（删除过滤法）。
and you Adapter class will remain as it is(remove filter method)..
public class MyCustomDrinksListAdapter extends ArrayAdapter<DrinksList> {
// private List<DrinksList> items = null; // no use
private ArrayList<DrinksList> arraylist;
public MyCustomDrinksListAdapter(Context context, int layoutId, List<DrinksList> items) {
super(context, layoutId, items);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View arrayView = convertView;
if(arrayView == null){
LayoutInflater vi;
vi = LayoutInflater.from(getContext());
arrayView = vi.inflate(R.layout.list_item, parent, false);
}
DrinksList currentPosition = getItem(position);
if(currentPosition != null){
ImageView image = (ImageView)arrayView.findViewById(R.id.product_image_coffee);
image.setImageResource(currentPosition.getImage());
TextView name = (TextView)arrayView.findViewById(R.id.product_name_coffee);
name.setText(currentPosition.getName());
TextView price = (TextView)arrayView.findViewById(R.id.product_price_coffee);
price.setText(String.format("%.2f", currentPosition.getPrice()));
}
return arrayView;
}
}
感谢您。希望工程...... !! 1
Thank you. Hope it works...!!1
这篇关于实现搜索里面的ListView片段的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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