Java tutorial
/** * Whois for android, to get the registration information of a domain name. * * Copyright (C) 2016 Old Geek * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * */ package org.oucho.whois; import android.annotation.SuppressLint; import android.content.Context; import android.content.DialogInterface; import android.content.SharedPreferences; import android.graphics.PorterDuff; import android.graphics.drawable.Drawable; import android.os.AsyncTask; import android.os.Bundle; import android.support.v4.content.ContextCompat; import android.support.v7.app.AlertDialog; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.Toolbar; import android.view.KeyEvent; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.inputmethod.EditorInfo; import android.view.inputmethod.InputMethodManager; import android.widget.AdapterView; import android.widget.EditText; import android.widget.Spinner; import android.widget.TextView; public class MainActivity extends AppCompatActivity { private static final String fichier_prfrence="org.oucho.whois_preferences"; private static SharedPreferences prfrences=null; private Spinner spinner; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); this.setTitle(""); listenerOnSpinnerItemSelection(); spinPosition(); run(); } private void listenerOnSpinnerItemSelection() { spinner = (Spinner) findViewById(R.id.spinner); spinner.setOnItemSelectedListener(new CustomOnItemSelectedListener()); } private void spinPosition() { int position_pref = 0; prfrences = getSharedPreferences(fichier_prfrence, 0); int position = prfrences.getInt("tld_ID", position_pref); spinner.setSelection(position); } private void run() { EditText urlText = (EditText) findViewById(R.id.editHostName); assert urlText != null; urlText.setOnEditorActionListener(new TextView.OnEditorActionListener() { @Override public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { if (actionId == EditorInfo.IME_ACTION_DONE) { whoisMessage(v); } return false; } }); } @SuppressWarnings("UnusedParameters") public void clearHostNameMessage(View view) { EditText urlText = (EditText) findViewById(R.id.editHostName); assert urlText != null; urlText.setText(""); } @SuppressWarnings("UnusedParameters") public void whoisMessage(View view) { String lookupString; String whoisInfoString; String selectedVal = ""; View view2 = this.getCurrentFocus(); if (view2 != null) { InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE); imm.hideSoftInputFromWindow(view2.getWindowToken(), 0); } prfrences = getSharedPreferences(fichier_prfrence, 0); String host = prfrences.getString("whois_value", selectedVal); final EditText urlText = (EditText) findViewById(R.id.editHostName); assert urlText != null; lookupString = urlText.getText().toString(); LookupWhoisTask lookupWhoisTask = new LookupWhoisTask(); whoisInfoString = runLookupTask(lookupWhoisTask, lookupString + ":" + host); TextView textView = (TextView) findViewById(R.id.whoisTextView); assert textView != null; textView.setTextSize(15); textView.setText(whoisInfoString); } private String runLookupTask(LookupTask lookupTask, String lookupString) { AsyncTask<String, Void, String> task = lookupTask.execute(lookupString); String result = null; try { result = task.get(); if (result == null) { String message = lookupTask.getExceptionMsg(); String title = lookupTask.getException().toString(); displayMessageDialog(message, title); } } catch (Exception taskE) { String message = taskE.getMessage(); String title = taskE.toString(); displayMessageDialog(message, title); } return result; } private void displayMessageDialog(String message, String title) { AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this); alertDialogBuilder.setTitle(title); alertDialogBuilder.setMessage(message).setCancelable(false).setPositiveButton("OK", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { dialog.cancel(); } }); AlertDialog alertDialog = alertDialogBuilder.create(); alertDialog.show(); } private class CustomOnItemSelectedListener implements AdapterView.OnItemSelectedListener { @SuppressLint("CommitPrefEdits") public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { prfrences = getSharedPreferences(fichier_prfrence, 0); SharedPreferences.Editor editor = prfrences.edit(); String tld = parent.getItemAtPosition(position).toString(); String selectedVal = getResources().getStringArray(R.array.whois_value)[parent.getSelectedItemPosition()]; editor.putString("spinner_TLD", tld); editor.putInt("tld_ID", position); editor.putString("whois_value", selectedVal); editor.commit(); } @Override public void onNothingSelected(AdapterView<?> arg0) { // This constructor is intentionally empty, pourquoi ? parce que ! } } @Override public boolean onKeyDown(final int keyCode, final KeyEvent event) { if ((keyCode == KeyEvent.KEYCODE_BACK)) { System.exit(0); } return super.onKeyDown(keyCode, event); } @Override public boolean onCreateOptionsMenu(Menu menu) { Context context = getApplicationContext(); getMenuInflater().inflate(R.menu.menu_main, menu); Drawable drawable = menu.findItem(R.id.about).getIcon(); drawable.mutate(); drawable.setColorFilter(ContextCompat.getColor(context, R.color.colorPrimaryDark), PorterDuff.Mode.SRC_ATOP); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.about: about(); return true; default: return super.onOptionsItemSelected(item); } } /** * About */ private void about() { String title = getString(R.string.about); AlertDialog.Builder About = new AlertDialog.Builder(this); LayoutInflater inflater = getLayoutInflater(); @SuppressLint("InflateParams") View dialoglayout = inflater.inflate(R.layout.alertdialog_main_noshadow, null); Toolbar toolbar = (Toolbar) dialoglayout.findViewById(R.id.dialog_toolbar_noshadow); toolbar.setTitle(title); toolbar.setTitleTextColor(0xffffffff); final TextView text = (TextView) dialoglayout.findViewById(R.id.showrules_dialog); text.setText(getString(R.string.about_message)); About.setView(dialoglayout); AlertDialog dialog = About.create(); dialog.show(); } }