Initial commit
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8d1597618a
50 changed files with 1519 additions and 0 deletions
186
app/src/main/java/com/kauron/newssarcher/MainActivity.java
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186
app/src/main/java/com/kauron/newssarcher/MainActivity.java
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package com.kauron.newssarcher;
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import android.content.DialogInterface;
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import android.content.Intent;
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import android.content.SharedPreferences;
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import android.os.AsyncTask;
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import android.os.Bundle;
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import android.preference.PreferenceManager;
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import android.support.v7.app.AlertDialog;
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import android.support.v7.app.AppCompatActivity;
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import android.view.KeyEvent;
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import android.view.LayoutInflater;
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import android.view.Menu;
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import android.view.MenuInflater;
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import android.view.MenuItem;
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import android.view.View;
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import android.view.inputmethod.EditorInfo;
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import android.widget.AdapterView;
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import android.widget.Button;
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import android.widget.CheckBox;
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import android.widget.EditText;
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import android.widget.ListView;
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import android.widget.TextView;
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import android.widget.Toast;
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import java.util.ArrayList;
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public class MainActivity extends AppCompatActivity {
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private EditText editText;
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private CheckBox stemmingCheck, stopwordsCheck;
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private QueryAdapter mAdapter;
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private ArrayList<Query> queries;
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_main);
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queries = new ArrayList<>();
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ListView listView = (ListView) findViewById(R.id.listView);
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editText = (EditText) findViewById(R.id.editText);
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stemmingCheck = (CheckBox) findViewById(R.id.stemmingCheck);
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stopwordsCheck = (CheckBox) findViewById(R.id.stopwordsCheck);
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editText.setOnEditorActionListener(new TextView.OnEditorActionListener() {
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@Override
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public boolean onEditorAction(TextView textView, int i, KeyEvent keyEvent) {
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if (i == EditorInfo.IME_ACTION_SEARCH) {
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onButtonClick(null);
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return true;
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}
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return false;
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}
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});
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mAdapter = new QueryAdapter(this, queries);
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listView.setAdapter(mAdapter);
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listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
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@Override
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public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
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if (queries.get(i).hasAnswer()) {
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Toast.makeText(adapterView.getContext(), R.string.no_answer_yet,
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Toast.LENGTH_LONG).show();
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return;
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}
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LayoutInflater inflater= LayoutInflater.from(adapterView.getContext());
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View mView=inflater.inflate(R.layout.my_dialog, null);
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TextView answerView = (TextView) mView.findViewById(R.id.answer_text);
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TextView shortAnswerView = (TextView) mView.findViewById(R.id.shortanswer_text);
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TextView optionsView = (TextView) mView.findViewById(R.id.options_text);
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answerView.setText(queries.get(i).getAnswer());
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shortAnswerView.setText(queries.get(i).getShortAnswer());
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optionsView.setText(queries.get(i).getOptions());
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final int[] position = new int[] {i};
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AlertDialog.Builder alertDialog = new AlertDialog.Builder(adapterView.getContext());
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alertDialog.setTitle(queries.get(i).getQuery());
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alertDialog.setView(mView);
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alertDialog.setPositiveButton(R.string.close, null);
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alertDialog.setNeutralButton(R.string.copy_query, new DialogInterface.OnClickListener() {
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@Override
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public void onClick(DialogInterface dialogInterface, int i) {
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editText.setText("");
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editText.append(queries.get(position[0]).getQuery());
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dialogInterface.dismiss();
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}
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});
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AlertDialog alert = alertDialog.create();
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alert.show();
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}
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});
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listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
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@Override
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public boolean onItemLongClick(AdapterView<?> adapterView, View view, int i, long l) {
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editText.getText().clear();
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editText.append(queries.get(i).getQuery());
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return false;
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}
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});
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}
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@Override
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public boolean onCreateOptionsMenu(Menu menu) {
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MenuInflater inflater = getMenuInflater();
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inflater.inflate(R.menu.menu, menu);
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return true;
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}
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@Override
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public boolean onOptionsItemSelected(MenuItem item) {
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// Handle item selection
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switch (item.getItemId()) {
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case R.id.menu_settings:
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Intent intent = new Intent(this, SettingsActivity.class);
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startActivity(intent);
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return true;
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default:
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return super.onOptionsItemSelected(item);
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}
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}
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public void onButtonClick(View view) {
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// connect to the server
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String s = editText.getText().toString();
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if (s.isEmpty())
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return;
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SharedPreferences sharedPref = PreferenceManager.getDefaultSharedPreferences(this);
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String endpoint = sharedPref.getString("pref_endpoint", "kauron.ddns.net");
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int port = Integer.valueOf(sharedPref.getString("pref_port", "2048"));
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Query q = new Query(s, endpoint, port, stopwordsCheck.isChecked(), stemmingCheck.isChecked(), this);
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new QueryTask().execute(q);
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queries.add(0, q);
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mAdapter.notifyDataSetChanged();
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editText.setText("");
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editText.requestFocus();
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}
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public void onSymbolClick(View view) {
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editText.append(((Button)view).getText().toString());
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}
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public void onBoolClick(View view) {
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String s = ((Button)view).getText().toString() + ' ';
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String text = editText.getText().toString();
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if (!text.isEmpty() && text.charAt(text.length() - 1) != ' ')
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s = ' ' + s;
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editText.append(s);
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}
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public void onFieldClick(View view) {
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String s = ((Button)view).getText().toString();
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String text = editText.getText().toString();
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if (!text.isEmpty() && text.charAt(text.length() - 1) != ' ')
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s = ' ' + s;
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editText.append(s);
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}
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private class QueryTask extends AsyncTask<Query, Void, Void> {
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@Override
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protected Void doInBackground(Query... queries) {
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Query q = queries[0];
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String message = q.getQuery() + q.getShortOptions();
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TCPClient mTcpClient = new TCPClient(message, q.getEndpoint(), new TCPClient.OnMessageReceived() {
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@Override
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//here the messageReceived method is implemented
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public void messageReceived(String response) {
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MainActivity.this.queries.get(0).setAnswer(response);
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}
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});
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mTcpClient.run();
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return null;
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}
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@Override
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protected void onPostExecute(Void aVoid) {
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mAdapter.notifyDataSetChanged();
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}
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}
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}
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58
app/src/main/java/com/kauron/newssarcher/Query.java
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58
app/src/main/java/com/kauron/newssarcher/Query.java
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package com.kauron.newssarcher;
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import android.content.Context;
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class Query {
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private final String query;
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private String answer;
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private final boolean noStopwords;
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private final boolean stemming;
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private final Context context;
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private final String host;
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private final int port;
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Query(String query, String host, int port, boolean noStopwords, boolean stemming, Context context) {
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this.query = query;
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this.noStopwords = noStopwords;
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this.stemming = stemming;
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this.context = context;
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this.host = host;
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this.port = port;
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}
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String getEndpoint() {
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return host + ":" + port;
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}
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String getQuery() {
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return query;
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}
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String getAnswer() {
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return answer;
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}
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String getOptions() {
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return String.format("Stemming (%s), Remove stopwords (%s)", stemming ? "yes" : "no",
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noStopwords ? "yes" : "no");
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}
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String getShortOptions() {
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return (stemming ? " -s" : "") + (noStopwords ? " -n" : "");
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}
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String getShortAnswer() {
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if (answer == null)
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return context.getString(R.string.no_answer_yet);
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else
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return answer.substring(answer.lastIndexOf('\n') + 1);
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}
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void setAnswer(String answer) {
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this.answer = answer;
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}
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boolean hasAnswer() {
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return answer == null;
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}
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}
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41
app/src/main/java/com/kauron/newssarcher/QueryAdapter.java
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app/src/main/java/com/kauron/newssarcher/QueryAdapter.java
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package com.kauron.newssarcher;
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import android.content.Context;
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import android.support.annotation.NonNull;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.ArrayAdapter;
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import android.widget.TextView;
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import java.util.ArrayList;
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class QueryAdapter extends ArrayAdapter<Query> {
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QueryAdapter(@NonNull Context context, @NonNull ArrayList<Query> objects) {
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super(context, R.layout.query_list_item, objects);
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}
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@NonNull
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@Override
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public View getView(int position, View convertView, @NonNull ViewGroup parent) {
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// Get the data item for this position
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Query q = getItem(position);
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LayoutInflater inflater = LayoutInflater.from(getContext());
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if (convertView == null)
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convertView = inflater.inflate(R.layout.query_list_item, parent, false);
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TextView query = (TextView) convertView.findViewById(R.id.query_text);
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TextView options = (TextView) convertView.findViewById(R.id.options_text);
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TextView result = (TextView) convertView.findViewById(R.id.result_text);
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if (q != null) {
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query.setText(q.getQuery());
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options.setText(q.getOptions());
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result.setText(q.getShortAnswer());
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}
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// Return the completed view to render on screen
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return convertView;
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}
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}
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package com.kauron.newssarcher;
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import android.os.Bundle;
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import android.preference.PreferenceActivity;
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import android.preference.PreferenceFragment;
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public class SettingsActivity extends PreferenceActivity {
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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// Display the fragment as the main content.
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getFragmentManager().beginTransaction()
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.replace(android.R.id.content, new SettingsFragment())
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.commit();
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}
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public static class SettingsFragment extends PreferenceFragment {
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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// Load the preferences from an XML resource
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addPreferencesFromResource(R.xml.pref_general);
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}
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}
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}
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70
app/src/main/java/com/kauron/newssarcher/TCPClient.java
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app/src/main/java/com/kauron/newssarcher/TCPClient.java
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package com.kauron.newssarcher;
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import android.util.Log;
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import java.io.BufferedReader;
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import java.io.BufferedWriter;
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import java.io.InputStreamReader;
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import java.io.OutputStreamWriter;
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import java.io.PrintWriter;
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import java.net.Socket;
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class TCPClient {
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private String SERVER_DOMAIN = "kauron.ddns.net"; //your computer IP address
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private int SERVER_PORT = 2048;
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private OnMessageReceived mMessageListener = null;
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private final String message;
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/**
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* Constructor of the class. OnMessagedReceived listens for the messages received from server
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*/
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TCPClient(String message, String endpoint, OnMessageReceived listener) {
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mMessageListener = listener;
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this.message = message;
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if (endpoint.contains(":")) {
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String[] strings = endpoint.split(":");
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SERVER_DOMAIN = strings[0];
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SERVER_PORT = Integer.valueOf(strings[1]);
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}
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}
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void run() {
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try {
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Socket socket = new Socket(SERVER_DOMAIN, SERVER_PORT);
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try {
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//send the message to the server
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PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())), true);
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if (!out.checkError()) {
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out.print(this.message);
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out.flush();
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}
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//receive the message which the server sends back
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BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
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String text = "", line;
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while ((line = in.readLine()) != null) {
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text += line + '\n';
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}
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text = text.substring(0, text.length() - 1);
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if (mMessageListener != null) {
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mMessageListener.messageReceived(text);
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}
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} catch (Exception e) {
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Log.e("TCP", "S: Error", e);
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} finally {
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//the socket must be closed. It is not possible to reconnect to this socket
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// after it is closed, which means a new socket instance has to be created.
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socket.close();
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}
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} catch (Exception e) {
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Log.e("TCP", "C: Error", e);
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}
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}
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//Declare the interface. The method messageReceived(String message) will must be implemented in the MyActivity
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//class at on asynckTask doInBackground
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interface OnMessageReceived {
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void messageReceived(String message);
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}
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}
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