Java tutorial
/** * Copyright 2012, Thierry Sall * * This file is part of ArSeuf. * * ArSeuf 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. * * ArSeuf 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 ArSeuf. If not, see <http://www.gnu.org/licenses/>. */ package com.seuf.arseuf; import android.app.Activity; import android.os.Bundle; import android.view.KeyEvent; import java.net.URI; import org.apache.http.HttpResponse; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.DefaultHttpClient; import android.content.SharedPreferences; import android.preference.PreferenceManager; import android.content.Intent; import java.io.IOException; import java.net.URISyntaxException; import android.widget.Toast; import android.content.Context; public class arseuf extends Activity { private SharedPreferences pref; private Context context; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); pref = PreferenceManager.getDefaultSharedPreferences(this); context = getApplicationContext(); setContentView(R.layout.main); } public boolean onKeyDown(int keyCode, KeyEvent event) { if (event.getRepeatCount() == 0) { switch (keyCode) { case KeyEvent.KEYCODE_MENU: startActivity(new Intent(this, Preferences.class)); break; case KeyEvent.KEYCODE_DPAD_CENTER: sendRequestToArduino("fwd"); break; // Cross = FORWARD case KeyEvent.KEYCODE_BUTTON_X: sendRequestToArduino("back"); break; // square = BACKWARD case KeyEvent.KEYCODE_DPAD_LEFT: sendRequestToArduino("tl"); break; // Left Dpad = turn left case KeyEvent.KEYCODE_DPAD_RIGHT: sendRequestToArduino("tr"); break; // Right Dpad = turn right case KeyEvent.KEYCODE_BUTTON_Y: sendRequestToArduino("play"); break; // triangle = klaxon } } return true; } public boolean onKeyUp(int keyCode, KeyEvent event) { switch (keyCode) { case KeyEvent.KEYCODE_DPAD_CENTER: sendRequestToArduino("stop"); break; case KeyEvent.KEYCODE_BUTTON_X: sendRequestToArduino("stop"); break; case KeyEvent.KEYCODE_DPAD_LEFT: sendRequestToArduino("stopt"); break; case KeyEvent.KEYCODE_DPAD_RIGHT: sendRequestToArduino("stopt"); break; } return true; } public boolean sendRequestToArduino(String cmd) { HttpClient hc = new DefaultHttpClient(); HttpClient client = new DefaultHttpClient(); HttpGet request = new HttpGet(); try { request.setURI(new URI("http://" + pref.getString("arduino_ip", null) + "/" + cmd)); } catch (URISyntaxException e) { Toast.makeText(context, "URISyntaxException : " + e.getMessage(), Toast.LENGTH_SHORT).show(); } try { HttpResponse response = client.execute(request); } catch (IOException e) { Toast.makeText(context, "IOException : " + e.getMessage(), Toast.LENGTH_SHORT).show(); } return true; } }