我的 listView 附加到一个 editText 以允许用户通过 listView 进行搜索。问题是，填充我的 listView 的数据仅在用户将文本输入到 editText 后才显示，我希望在用户输入任何内容之前显示结果。
public class Search extends Activity {
EditText editText;
ListView listview;
int textlength = 0;
int width;
Button list;
Button filter;
CustomAdapter adapter;
Location userLoc;
private ArrayList<String> brand;
private ArrayList<String> size;
private ArrayList<String> price;
private ArrayList<Integer> percent;
private ArrayList<String> objID;
private ArrayList<String> store;
private ArrayList<String> address;
private ArrayList<Integer> distance;
ArrayList<String> text_sort = new ArrayList<String>();
ArrayList<String> size_sort = new ArrayList<String>();
ArrayList<String> price_sort = new ArrayList<String>();
ArrayList<Integer> percent_sort = new ArrayList<Integer>();
ArrayList<Integer> image_sort = new ArrayList<Integer>();
ArrayList<String> id_sort = new ArrayList<String>();
ArrayList<String> store_sort = new ArrayList<String>();
ArrayList<String> address_sort = new ArrayList<String>();
ArrayList<Integer> distance_sort = new ArrayList<Integer>();
Integer longitude;
Integer latitude;
ParseObject dealsObject;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.search_page);
Parse.initialize(this, "vUz23Z6zdIL1jbxbVWeLpsSdu1ClTu3YiG30zTWY",
"4BTyoq1QQKows8qVJV7lvU3ZokSRrLFyOCPzffwJ");
listview = (ListView) findViewById(R.id.listView1);
editText = (EditText) findViewById(R.id.editText1);
brand = new ArrayList<String>();
size = new ArrayList<String>();
price = new ArrayList<String>();
percent = new ArrayList<Integer>();
objID = new ArrayList<String>();
store = new ArrayList<String>();
address = new ArrayList<String>();
distance = new ArrayList<Integer>();
LocationManager lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
userLoc = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
final LocationListener locationListener = new LocationListener() {
public void onLocationChanged(Location location) {
longitude = (int) userLoc.getLongitude();
latitude = (int) userLoc.getLatitude();
userLoc.setLatitude(latitude);
userLoc.setLongitude(longitude);
}
@Override
public void onProviderDisabled(String arg0) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String arg0) {
// TODO Auto-generated method stub
}
@Override
public void onStatusChanged(String arg0, int arg1, Bundle arg2) {
// TODO Auto-generated method stub
}
};
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 2000, 10, locationListener);
getDeals();
adapter = new CustomAdapter(brand, size, price, percent, objID, store,
address, distance);
listview.setAdapter(adapter);
editText.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
public void onTextChanged(CharSequence s, int start, int before,
int count) {
textlength = editText.getText().length();
text_sort.clear();
size_sort.clear();
price_sort.clear();
percent_sort.clear();
image_sort.clear();
id_sort.clear();
store_sort.clear();
address_sort.clear();
distance_sort.clear();
for (int i = 0; i < brand.size(); i++) {
if (textlength <= brand.get(i).length()) {
if (editText
.getText()
.toString()
.equalsIgnoreCase(
(String) brand.get(i).subSequence(0,
textlength))) {
text_sort.add(brand.get(i));
size_sort.add(size.get(i));
price_sort.add(price.get(i));
percent_sort.add(percent.get(i));
id_sort.add(objID.get(i));
store_sort.add(store.get(i));
address_sort.add(address.get(i));
distance_sort.add(distance.get(i));
listview.setAdapter(new CustomAdapter(text_sort,
size_sort, price_sort, percent_sort,
id_sort, store_sort, address_sort,
distance_sort));
// Register onClickListener to Handle Click Events
// on Each Item
listview.setOnItemClickListener(new OnItemClickListener() {
//
// Argument position gives the index of item
// which is clicked
@Override
public void onItemClick(AdapterView<?> parent,
View v, int position, long id) {
String brand = (String) text_sort
.get(position);
String size = (String) size_sort
.get(position);
String price = (String) price_sort
.get(position);
String objID = (String) id_sort
.get(position);
String store = (String) store_sort
.get(position);
String address = (String) address_sort
.get(position);
int percent = (int) percent_sort
.get(position);
Integer distance = distance_sort
.get(position);
Intent intent = new Intent(
"com.alpha.dealtap.DEALPAGE");
intent.putExtra("Brand", brand);
intent.putExtra("Size", size);
intent.putExtra("Price", price);
intent.putExtra("Percent", percent);
intent.putExtra("ID", objID);
intent.putExtra("Store", store);
intent.putExtra("Address", address);
intent.putExtra("Distance", distance);
System.out.println("My Selection: "
+ intent.toString());
startActivity(intent);
}
});
}
}
}
}
});
list = (Button) findViewById(R.id.sort);
Button map = (Button) findViewById(R.id.map);
filter = (Button) findViewById(R.id.filter);
list.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
PopupMenu popup = new PopupMenu(Search.this, list);
popup.getMenuInflater().inflate(R.menu.sortmenu,
popup.getMenu());
popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
public boolean onMenuItemClick(MenuItem item) {
if (item.getOrder() == 1) {
brand.clear();
size.clear();
price.clear();
percent.clear();
objID.clear();
store.clear();
address.clear();
distance.clear();
listview.setAdapter(adapter);
adapter.notifyDataSetChanged();
getDealsPrice();
System.out.println(price);
} else if (item.getOrder() == 2) {
brand.clear();
size.clear();
price.clear();
percent.clear();
objID.clear();
store.clear();
address.clear();
distance.clear();
listview.setAdapter(adapter);
adapter.notifyDataSetChanged();
getDealsPercent();
System.out.println(price);
} else if (item.getOrder() == 3) {
brand.clear();
size.clear();
price.clear();
percent.clear();
address.clear();
distance.clear();
objID.clear();
store.clear();
listview.setAdapter(adapter);
adapter.notifyDataSetChanged();
getDealsName();
System.out.println(brand);
} else {
System.out.println("Shit....Item is: "
+ item.getTitle());
}
Toast.makeText(Search.this,
"You Clicked : " + item.getTitle(),
Toast.LENGTH_SHORT).show();
return true;
}
});
popup.show();
}
});
filter.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
PopupMenu popupTwo = new PopupMenu(Search.this, filter);
popupTwo.getMenuInflater().inflate(R.menu.filtermenu,
popupTwo.getMenu());
popupTwo.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
public boolean onMenuItemClick(MenuItem item) {
if (item.getOrder() == 1) {
brand.clear();
size.clear();
price.clear();
percent.clear();
objID.clear();
address.clear();
distance.clear();
store.clear();
listview.setAdapter(adapter);
adapter.notifyDataSetChanged();
getDealsName();
} else {
Intent intent = new Intent(
"com.alpha.dealtap.STORESEARCH");
startActivity(intent);
}
return true;
}
});
popupTwo.show();
}
});
map.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
startActivity(new Intent("com.alpha.dealtap.MAP"));
}
});
}
private void getDeals() {
// TODO Auto-generated method stub
ParseQuery query = new ParseQuery("Deals");
query.findInBackground(new FindCallback() {
@Override
public void done(List<ParseObject> objects, ParseException e) {
if (e == null) {
for (ParseObject dealsObject : objects) {
brand.add(dealsObject.getString("Brand"));
size.add(dealsObject.getString("Size"));
price.add("$" + dealsObject.getString("Price"));
percent.add(dealsObject.getInt("Percentage"));
objID.add(dealsObject.getObjectId());
store.add(dealsObject.getString("Store"));
address.add(dealsObject.getString("Address"));
Location location = new Location("");
location.setLatitude(dealsObject.getInt("Latitude"));
location.setLongitude(dealsObject.getInt("Longitude"));
distance.add((int) ((userLoc.distanceTo(location))/1609.34));
}
} else {
Log.v("Brand", "Error: " + e.getMessage());
}
}
});
}
private void getDealsPrice() {
// TODO Auto-generated method stub
ParseQuery query = new ParseQuery("Deals");
query.addDescendingOrder("Price");
query.findInBackground(new FindCallback() {
@Override
public void done(List<ParseObject> objects, ParseException e) {
if (e == null) {
for (ParseObject dealsObject : objects) {
brand.add(dealsObject.getString("Brand"));
size.add(dealsObject.getString("Size"));
price.add("$" + dealsObject.getString("Price"));
percent.add(dealsObject.getInt("Percentage"));
objID.add(dealsObject.getObjectId());
store.add(dealsObject.getString("Store"));
address.add(dealsObject.getString("Address"));
Location location = new Location("");
location.setLatitude(dealsObject.getInt("Latitude"));
location.setLongitude(dealsObject.getInt("Longitude"));
distance.add((int) ((userLoc.distanceTo(location))/1609.34));
}
} else {
Log.v("Brand", "Error: " + e.getMessage());
}
}
});
}
private void getDealsPercent() {
// TODO Auto-generated method stub
ParseQuery query = new ParseQuery("Deals");
query.addDescendingOrder("Percentage");
query.findInBackground(new FindCallback() {
@Override
public void done(List<ParseObject> objects, ParseException e) {
if (e == null) {
for (ParseObject dealsObject : objects) {
brand.add(dealsObject.getString("Brand"));
size.add(dealsObject.getString("Size"));
price.add("$" + dealsObject.getString("Price"));
percent.add(dealsObject.getInt("Percentage"));
objID.add(dealsObject.getObjectId());
store.add(dealsObject.getString("Store"));
address.add(dealsObject.getString("Address"));
Location location = new Location("");
location.setLatitude(dealsObject.getInt("Latitude"));
location.setLongitude(dealsObject.getInt("Longitude"));
distance.add((int) ((userLoc.distanceTo(location))/1609.34));
}
} else {
Log.v("Brand", "Error: " + e.getMessage());
}
}
});
}
private void getDealsName() {
// TODO Auto-generated method stub
ParseQuery query = new ParseQuery("Deals");
query.addAscendingOrder("Brand");
query.findInBackground(new FindCallback() {
@Override
public void done(List<ParseObject> objects, ParseException e) {
if (e == null) {
for (ParseObject dealsObject : objects) {
brand.add(dealsObject.getString("Brand"));
size.add(dealsObject.getString("Size"));
price.add("$" + dealsObject.getString("Price"));
percent.add(dealsObject.getInt("Percentage"));
objID.add(dealsObject.getObjectId());
store.add(dealsObject.getString("Store"));
address.add(dealsObject.getString("Address"));
Location location = new Location("");
location.setLatitude(dealsObject.getInt("Latitude"));
location.setLongitude(dealsObject.getInt("Longitude"));
distance.add((int) ((userLoc.distanceTo(location))/1609.34));
}
} else {
Log.v("Brand", "Error: " + e.getMessage());
}
}
});
}
class CustomAdapter extends BaseAdapter {
String[] data_text;
String[] size_text;
String[] price_text;
String[] id_text;
String[] store_text;
String[] address_text;
Integer[] percent_text;
Integer[] distance_text;
CustomAdapter(String[] text, String[] size, String[] price,
Integer[] percent, String[] id, String[] store,
String[] address, Integer[] distance) {
data_text = text;
size_text = size;
price_text = price;
percent_text = percent;
store_text = store;
address_text = address;
id_text = id;
distance_text = distance;
}
CustomAdapter(ArrayList<String> text, ArrayList<String> drinkSize,
ArrayList<String> price, ArrayList<Integer> percent,
ArrayList<String> objID, ArrayList<String> store,
ArrayList<String> address, ArrayList<Integer> distance) {
data_text = new String[text.size()];
size_text = new String[drinkSize.size()];
price_text = new String[price.size()];
percent_text = new Integer[percent.size()];
id_text = new String[objID.size()];
store_text = new String[store.size()];
address_text = new String[address.size()];
distance_text = new Integer[distance.size()];
for (int i = 0; i < text.size(); i++) {
data_text[i] = text.get(i);
size_text[i] = drinkSize.get(i);
price_text[i] = price.get(i);
percent_text[i] = percent.get(i);
id_text[i] = objID.get(i);
store_text[i] = store.get(i);
address_text[i] = address.get(i);
distance_text[i] = distance.get(i);
}
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return data_text.length;
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return null;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = getLayoutInflater();
View row;
row = inflater.inflate(R.layout.my_custom_dropdown, parent, false);
TextView textview = (TextView) row
.findViewById(R.id.textView_MainStore);
TextView size = (TextView) row.findViewById(R.id.textView_Size);
TextView price = (TextView) row.findViewById(R.id.textView_Price);
TextView percent = (TextView) row
.findViewById(R.id.textView_dist);
TextView store = (TextView) row
.findViewById(R.id.textView_Location);
textview.setText(data_text[position]);
size.setText(size_text[position]);
price.setText(price_text[position]);
percent.setText(String.valueOf(percent_text[position]) + "%");
store.setText(store_text[position]);
// Changes the color of the percent integer based on it's
// number...green if higher...red if lower
if (percent_text[position] >= 85)
percent.setTextColor(getResources().getColor(R.color.green));
else if (percent_text[position] >= 70
&& percent_text[position] <= 85)
percent.setTextColor(getResources().getColor(R.color.yellow));
else if (percent_text[position] >= 0
&& percent_text[position] <= 70)
percent.setTextColor(getResources().getColor(R.color.red));
return (row);
}
}
}
很抱歉有大块代码，但我已经坚持了一段时间。谢谢！