package rappiddevelopers.destinationadvisor;
import android.content.Context;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import rappiddevelopers.destinationadvisor.models.TranslatorModel;
public class MainActivity extends AppCompatActivity {
    private AutoCompleteTextView autoCompleteTextView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        autoCompleteTextView = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView);
        new HttpGetTask().execute("http://192.168.0.107/abc/translator.php");
    }
    public class HttpGetTask extends AsyncTask<String, String, List<TranslatorModel>> {
        @Override
        protected List<TranslatorModel> doInBackground(String... params) {
            HttpURLConnection connection = null;
            BufferedReader reader = null;
            try {
                URL url = new URL(params[0]);
                connection = (HttpURLConnection) url.openConnection();
                connection.connect();
                InputStream stream = connection.getInputStream();
                reader = new BufferedReader(new InputStreamReader(stream));
                StringBuffer buffer = new StringBuffer();
                String line = "";
                while ((line = reader.readLine()) != null) {
                    buffer.append(line);
                }
                String finalJson = buffer.toString();
                JSONArray parentArray = new JSONArray(finalJson);
                List<TranslatorModel> translatorModelList = new ArrayList<>();
                for(int i= 0; i<parentArray.length();i++) {
                    JSONObject finalObject = parentArray.getJSONObject(i);
                    TranslatorModel translatorModel = new TranslatorModel();
                        translatorModel.setEnglish(finalObject.getString("englishSentence"));
                        translatorModelList.add(translatorModel);
                    }
                return translatorModelList;
            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } catch (JSONException e) {
                e.printStackTrace();
            } finally {
                if (connection != null) {
                    connection.disconnect();
                }
                try {
                    if (reader != null) {
                        reader.close();
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return null;
        }
        @Override
        protected void onPostExecute(List<TranslatorModel> data) {
            ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,data);
            autoCompleteTextView.setAdapter(adapter);
            autoCompleteTextView.setThreshold(1);
            super.onPostExecute(data);
        }
    }
}

希望将json字符串对象（EnglishEntence）中的值显示到autocompletetextview中。
translatormodel类具有用于JSonObject的getter和setter方法。
在arrayadapter声明行上发现错误。