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私はMySQL、JSONでライブ検索を行っています。ローカル配列の値で動作します。 MySQLでは動作しません。私の懸念事項は、ユーザーがデータベースから検索してリストビューで表示する必要があるときです。ベローは、検索Jsonを使用してMySQLデータベースでライブ検索を行い、リストビューの結果を表示します
import android.content.Context;
import android.content.Intent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import zesteve.com.myapplication.R;
import zesteve.com.myapplication.Search;
import zesteve.com.myapplication.VendProfileActivity;
/**
* Created by Ravi Shankar on 6/22/2017.
*/
public class SearchAdapter extends BaseAdapter {
// Declare Variables
Context mContext;
LayoutInflater inflater;
private List<Search> vendersearchlist = null;
private ArrayList<Search> arraylist;
public SearchAdapter(Context context,
List<Search> vendersearchlist) {
mContext = context;
this.vendersearchlist = vendersearchlist;
inflater = LayoutInflater.from(mContext);
this.arraylist = new ArrayList<Search>();
this.arraylist.addAll(vendersearchlist);
}
public class ViewHolder {
TextView id;
TextView vname;
}
@Override
public int getCount() {
return vendersearchlist.size();
}
@Override
public Search getItem(int position) {
return vendersearchlist.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
public View getView(final int position, View view, ViewGroup parent) {
final ViewHolder holder;
if (view == null) {
holder = new ViewHolder();
view = inflater.inflate(R.layout.search_item_list, null);
// Locate the TextViews in listview_item.xml
//holder.id = (TextView) view.findViewById(R.id.id);
holder.vname = (TextView) view.findViewById(R.id.autoCompleteTextView);
view.setTag(holder);
} else {
holder = (ViewHolder) view.getTag();
}
// Set the results into TextViews
//holder.rank.setText(Search.get(position).getRank());
holder.vname.setText(vendersearchlist.get(position).getVname());
// Listen for ListView Item Click
view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// Send single item click data to SingleItemView Class
Intent intent = new Intent(mContext, VendProfileActivity.class);
// Pass all data rank
intent.putExtra("Vend_Id",
(vendersearchlist.get(position).getId()));
// Pass all data country
intent.putExtra("Vend_Name",
(vendersearchlist.get(position).getVname()));
// Pass all data population
// Start SingleItemView Class
mContext.startActivity(intent);
}
});
return view;
}
// Filter Class
public void filter(String charText) {
charText = charText.toLowerCase(Locale.getDefault());
vendersearchlist.clear();
if (charText.length() == 0) {
vendersearchlist.addAll(arraylist);
} else {
for (Search sl : arraylist) {
if (sl.getVname().toLowerCase(Locale.getDefault())
.contains(charText)) {
vendersearchlist.add(sl);
}
}
}
notifyDataSetChanged();
}
}
とPOJO
public class Search {
private int id;
private String vname;
public Search(int id, String vname) {
this.id = id;
this.vname = vname;
}
public int getId() {
return this.id;
}
public String getVname() {
return this.vname;
}
}
のための私のアダプタであると私SearchActivity.java
import android.content.res.Resources;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.DefaultItemAnimator;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.TypedValue;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import okhttp3.OkHttpClient;
import okhttp3.Response;
import zesteve.com.myapplication.adapter.SearchAdapter;
import zesteve.com.myapplication.adapter.VenderAdapter;
public class Search_vender extends AppCompatActivity {
String catname,city;
int catid;
private EditText Vendname;
private Session session;
ListView listview;
SearchAdapter adapter;
int[] id;
String[] vname;
ArrayList<Search> vendersearchlist = new ArrayList<Search>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.search_vender);
Toolbar toolbar = (Toolbar)findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
session = new Session(Search_vender.this);
catid = getIntent().getIntExtra("CatId",00);
catname= getIntent().getStringExtra("CatName");
city = session.getUserLocation().get(session.KEY_UCITY);
listview = (ListView) findViewById(R.id.listview);
Vendname = (EditText) findViewById(R.id.searchitem);
Vendname.setHint("Search "+catname+" in "+city);
//fetch data from server in json
String vsearch = Vendname.getText().toString();
prepareVender(vsearch);
// Pass results to ListViewAdapter Class
adapter = new SearchAdapter(this, vendersearchlist);
// Binds the Adapter to the ListView
listview.setAdapter(adapter);
// Locate the EditText in listview_main.xml
Vendname.addTextChangedListener(new TextWatcher() {
@Override
public void afterTextChanged(Editable arg0) {
// TODO Auto-generated method stub
String text = Vendname.getText().toString().toLowerCase(Locale.getDefault());
adapter.filter(text);
}
@Override
public void beforeTextChanged(CharSequence arg0, int arg1,
int arg2, int arg3) {
// TODO Auto-generated method stub
}
@Override
public void onTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) {
// TODO Auto-generated method stub
}
});
}
private void prepareVender(String sText){
AsyncTask<String,Void,Void> task = new AsyncTask<String, Void, Void>() {
@Override
protected Void doInBackground(String... strings) {
OkHttpClient client = new OkHttpClient();
okhttp3.Request request = new okhttp3.Request.Builder()
.url("http://api.zesteve.com/vend_list.php?city="+city+"&catid="+catid+"&name="+strings[0])
.build();
try{
Response response = client.newCall(request).execute();
JSONArray array = new JSONArray(response.body().string());
for (int i=0; i<array.length(); i++){
JSONObject object= array.getJSONObject(i);
Search vender = new Search(object.getInt("id"),
object.getString("name"));
vendersearchlist.add(vender);
}
}catch (IOException e){
e.printStackTrace();
} catch (JSONException e) {
System.out.println("End of Catagory");
}
return null;
}
@Override
protected void onPostExecute(Void aVoid) {
adapter.notifyDataSetChanged();
}
};
task.execute(sText);
}
@Override
public boolean onSupportNavigateUp() {
onBackPressed();
return true;
}
}
何か疑問がある場合はコメントしてください。