2 * Copyright (C) 2009 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package org.altusmetrum.AltosDroid;
19 import android.app.Activity;
20 import android.bluetooth.BluetoothAdapter;
21 import android.bluetooth.BluetoothDevice;
22 import android.content.Intent;
23 import android.os.Bundle;
24 import android.os.Handler;
25 import android.os.Message;
26 import android.util.Log;
27 import android.view.KeyEvent;
28 import android.view.Menu;
29 import android.view.MenuInflater;
30 import android.view.MenuItem;
31 import android.view.View;
32 import android.view.Window;
33 import android.view.View.OnClickListener;
34 import android.view.inputmethod.EditorInfo;
35 import android.widget.ArrayAdapter;
36 import android.widget.Button;
37 import android.widget.EditText;
38 import android.widget.ListView;
39 import android.widget.TextView;
40 import android.widget.Toast;
41 import org.altusmetrum.AltosDroid.R;
44 * This is the main Activity that displays the current chat session.
46 public class AltosDroid extends Activity {
48 private static final String TAG = "BluetoothChat";
49 private static final boolean D = true;
51 // Message types sent from the BluetoothChatService Handler
52 public static final int MESSAGE_STATE_CHANGE = 1;
53 public static final int MESSAGE_READ = 2;
54 public static final int MESSAGE_WRITE = 3;
55 public static final int MESSAGE_DEVICE_NAME = 4;
56 public static final int MESSAGE_TOAST = 5;
58 // Key names received from the BluetoothChatService Handler
59 public static final String DEVICE_NAME = "device_name";
60 public static final String TOAST = "toast";
62 // Intent request codes
63 private static final int REQUEST_CONNECT_DEVICE_SECURE = 1;
64 private static final int REQUEST_CONNECT_DEVICE_INSECURE = 2;
65 private static final int REQUEST_ENABLE_BT = 3;
68 private TextView mTitle;
69 private ListView mConversationView;
70 private EditText mOutEditText;
71 private Button mSendButton;
73 // Name of the connected device
74 private String mConnectedDeviceName = null;
75 // Array adapter for the conversation thread
76 private ArrayAdapter<String> mConversationArrayAdapter;
77 // String buffer for outgoing messages
78 private StringBuffer mOutStringBuffer;
79 // Local Bluetooth adapter
80 private BluetoothAdapter mBluetoothAdapter = null;
81 // Member object for the chat services
82 private BluetoothChatService mChatService = null;
86 public void onCreate(Bundle savedInstanceState) {
87 super.onCreate(savedInstanceState);
88 if(D) Log.e(TAG, "+++ ON CREATE +++");
90 // Set up the window layout
91 requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
92 setContentView(R.layout.main);
93 getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.custom_title);
95 // Set up the custom title
96 mTitle = (TextView) findViewById(R.id.title_left_text);
97 mTitle.setText(R.string.app_name);
98 mTitle = (TextView) findViewById(R.id.title_right_text);
100 // Get local Bluetooth adapter
101 mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
103 // If the adapter is null, then Bluetooth is not supported
104 if (mBluetoothAdapter == null) {
105 Toast.makeText(this, "Bluetooth is not available", Toast.LENGTH_LONG).show();
112 public void onStart() {
114 if(D) Log.e(TAG, "++ ON START ++");
116 // If BT is not on, request that it be enabled.
117 // setupChat() will then be called during onActivityResult
118 if (!mBluetoothAdapter.isEnabled()) {
119 Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
120 startActivityForResult(enableIntent, REQUEST_ENABLE_BT);
121 // Otherwise, setup the chat session
123 if (mChatService == null) setupChat();
128 public synchronized void onResume() {
130 if(D) Log.e(TAG, "+ ON RESUME +");
132 // Performing this check in onResume() covers the case in which BT was
133 // not enabled during onStart(), so we were paused to enable it...
134 // onResume() will be called when ACTION_REQUEST_ENABLE activity returns.
135 if (mChatService != null) {
136 // Only if the state is STATE_NONE, do we know that we haven't started already
137 if (mChatService.getState() == BluetoothChatService.STATE_NONE) {
138 // Start the Bluetooth chat services
139 mChatService.start();
144 private void setupChat() {
145 Log.d(TAG, "setupChat()");
147 // Initialize the array adapter for the conversation thread
148 mConversationArrayAdapter = new ArrayAdapter<String>(this, R.layout.message);
149 mConversationView = (ListView) findViewById(R.id.in);
150 mConversationView.setAdapter(mConversationArrayAdapter);
152 // Initialize the compose field with a listener for the return key
153 mOutEditText = (EditText) findViewById(R.id.edit_text_out);
154 mOutEditText.setOnEditorActionListener(mWriteListener);
156 // Initialize the send button with a listener that for click events
157 mSendButton = (Button) findViewById(R.id.button_send);
158 mSendButton.setOnClickListener(new OnClickListener() {
159 public void onClick(View v) {
160 // Send a message using content of the edit text widget
161 TextView view = (TextView) findViewById(R.id.edit_text_out);
162 String message = view.getText().toString();
163 sendMessage(message);
167 // Initialize the BluetoothChatService to perform bluetooth connections
168 mChatService = new BluetoothChatService(this, mHandler);
170 // Initialize the buffer for outgoing messages
171 mOutStringBuffer = new StringBuffer("");
175 public synchronized void onPause() {
177 if(D) Log.e(TAG, "- ON PAUSE -");
181 public void onStop() {
183 if(D) Log.e(TAG, "-- ON STOP --");
187 public void onDestroy() {
189 // Stop the Bluetooth chat services
190 if (mChatService != null) mChatService.stop();
191 if(D) Log.e(TAG, "--- ON DESTROY ---");
194 private void ensureDiscoverable() {
195 if(D) Log.d(TAG, "ensure discoverable");
196 if (mBluetoothAdapter.getScanMode() !=
197 BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE) {
198 Intent discoverableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
199 discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
200 startActivity(discoverableIntent);
206 * @param message A string of text to send.
208 private void sendMessage(String message) {
209 // Check that we're actually connected before trying anything
210 if (mChatService.getState() != BluetoothChatService.STATE_CONNECTED) {
211 Toast.makeText(this, R.string.not_connected, Toast.LENGTH_SHORT).show();
215 // Check that there's actually something to send
216 if (message.length() > 0) {
217 // Get the message bytes and tell the BluetoothChatService to write
218 byte[] send = message.getBytes();
219 mChatService.write(send);
221 // Reset out string buffer to zero and clear the edit text field
222 mOutStringBuffer.setLength(0);
223 mOutEditText.setText(mOutStringBuffer);
227 // The action listener for the EditText widget, to listen for the return key
228 private TextView.OnEditorActionListener mWriteListener =
229 new TextView.OnEditorActionListener() {
230 public boolean onEditorAction(TextView view, int actionId, KeyEvent event) {
231 // If the action is a key-up event on the return key, send the message
232 if (actionId == EditorInfo.IME_NULL && event.getAction() == KeyEvent.ACTION_UP) {
233 String message = view.getText().toString();
234 sendMessage(message);
236 if(D) Log.i(TAG, "END onEditorAction");
241 // The Handler that gets information back from the BluetoothChatService
242 private final Handler mHandler = new Handler() {
244 public void handleMessage(Message msg) {
246 case MESSAGE_STATE_CHANGE:
247 if(D) Log.i(TAG, "MESSAGE_STATE_CHANGE: " + msg.arg1);
249 case BluetoothChatService.STATE_CONNECTED:
250 mTitle.setText(R.string.title_connected_to);
251 mTitle.append(mConnectedDeviceName);
252 mConversationArrayAdapter.clear();
254 case BluetoothChatService.STATE_CONNECTING:
255 mTitle.setText(R.string.title_connecting);
257 case BluetoothChatService.STATE_READY:
258 case BluetoothChatService.STATE_NONE:
259 mTitle.setText(R.string.title_not_connected);
264 byte[] writeBuf = (byte[]) msg.obj;
265 // construct a string from the buffer
266 String writeMessage = new String(writeBuf);
267 mConversationArrayAdapter.add("Me: " + writeMessage);
270 byte[] readBuf = (byte[]) msg.obj;
271 // construct a string from the valid bytes in the buffer
272 String readMessage = new String(readBuf, 0, msg.arg1);
273 mConversationArrayAdapter.add(mConnectedDeviceName+": " + readMessage);
275 case MESSAGE_DEVICE_NAME:
276 // save the connected device's name
277 mConnectedDeviceName = msg.getData().getString(DEVICE_NAME);
278 Toast.makeText(getApplicationContext(), "Connected to "
279 + mConnectedDeviceName, Toast.LENGTH_SHORT).show();
282 Toast.makeText(getApplicationContext(), msg.getData().getString(TOAST),
283 Toast.LENGTH_SHORT).show();
289 public void onActivityResult(int requestCode, int resultCode, Intent data) {
290 if(D) Log.d(TAG, "onActivityResult " + resultCode);
291 switch (requestCode) {
292 case REQUEST_CONNECT_DEVICE_SECURE:
293 // When DeviceListActivity returns with a device to connect
294 if (resultCode == Activity.RESULT_OK) {
295 connectDevice(data, true);
298 case REQUEST_CONNECT_DEVICE_INSECURE:
299 // When DeviceListActivity returns with a device to connect
300 if (resultCode == Activity.RESULT_OK) {
301 connectDevice(data, false);
304 case REQUEST_ENABLE_BT:
305 // When the request to enable Bluetooth returns
306 if (resultCode == Activity.RESULT_OK) {
307 // Bluetooth is now enabled, so set up a chat session
310 // User did not enable Bluetooth or an error occured
311 Log.d(TAG, "BT not enabled");
312 Toast.makeText(this, R.string.bt_not_enabled_leaving, Toast.LENGTH_SHORT).show();
318 private void connectDevice(Intent data, boolean secure) {
319 // Get the device MAC address
320 String address = data.getExtras()
321 .getString(DeviceListActivity.EXTRA_DEVICE_ADDRESS);
322 // Get the BLuetoothDevice object
323 BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address);
324 // Attempt to connect to the device
325 mChatService.connect(device, secure);
329 public boolean onCreateOptionsMenu(Menu menu) {
330 MenuInflater inflater = getMenuInflater();
331 inflater.inflate(R.menu.option_menu, menu);
336 public boolean onOptionsItemSelected(MenuItem item) {
337 Intent serverIntent = null;
338 switch (item.getItemId()) {
339 case R.id.secure_connect_scan:
340 // Launch the DeviceListActivity to see devices and do scan
341 serverIntent = new Intent(this, DeviceListActivity.class);
342 startActivityForResult(serverIntent, REQUEST_CONNECT_DEVICE_SECURE);
344 case R.id.insecure_connect_scan:
345 // Launch the DeviceListActivity to see devices and do scan
346 serverIntent = new Intent(this, DeviceListActivity.class);
347 startActivityForResult(serverIntent, REQUEST_CONNECT_DEVICE_INSECURE);
349 case R.id.discoverable:
350 // Ensure this device is discoverable by others
351 ensureDiscoverable();