/* * Copyright 2011 Christoph Jaritz * */ package at.bulme.remotecontrol; import android.app.Activity; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothDevice; import android.content.Intent; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.util.Log; import android.view.KeyEvent; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.Window; import android.view.View.OnClickListener; import android.view.inputmethod.EditorInfo; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.EditText; import android.widget.ListView; import android.widget.TextView; import android.widget.Toast; /** * Main Activity */ public class LightCube extends Activity { // Debugging private static final String TAG = "LightCube"; private static final boolean D = true; // Message types sent from the BluetoothChatService Handler public static final int MESSAGE_STATE_CHANGE = 1; public static final int MESSAGE_READ = 2; public static final int MESSAGE_WRITE = 3; public static final int MESSAGE_DEVICE_NAME = 4; public static final int MESSAGE_TOAST = 5; // Key names received from the BluetoothChatService Handler public static final String DEVICE_NAME = "device_name"; public static final String TOAST = "toast"; // Intent request codes private static final int REQUEST_CONNECT_DEVICE = 1; private static final int REQUEST_ENABLE_BT = 2; // Layout Views private TextView mTitle; private Button mPlayButton; private Button mPlusButton; private Button mMinusButton; private Button mDButton; private Button mHButton; private Button mForwardButton; private Button mStopButton; private Button mOnButton; private Button mRedButton; private Button mGreenButton; private Button mBlueButton; private Button mYellowButton; // Name of the connected device private String mConnectedDeviceName = null; // String buffer for outgoing messages private StringBuffer mOutStringBuffer; // Local Bluetooth adapter private BluetoothAdapter mBluetoothAdapter = null; // Member object for the chat services private BluetoothChatService mChatService = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); if(D) Log.e(TAG, "+++ ON CREATE +++"); // Set up the window layout requestWindowFeature(Window.FEATURE_CUSTOM_TITLE); setContentView(R.layout.main); getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.custom_title); // Set up the custom title mTitle = (TextView) findViewById(R.id.title_left_text); mTitle.setText(R.string.app_name); mTitle = (TextView) findViewById(R.id.title_right_text); // Get local Bluetooth adapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); // If the adapter is null, then Bluetooth is not supported if (mBluetoothAdapter == null) { Toast.makeText(this, "Bluetooth is not available", Toast.LENGTH_LONG).show(); finish(); return; } } @Override public void onStart() { super.onStart(); if(D) Log.e(TAG, "++ ON START ++"); // If BT is not on, request that it be enabled. // setupChat() will then be called during onActivityResult if (!mBluetoothAdapter.isEnabled()) { Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); startActivityForResult(enableIntent, REQUEST_ENABLE_BT); // Otherwise, setup the chat session } else { if (mChatService == null) setupRemote(); } } @Override public synchronized void onResume() { super.onResume(); if(D) Log.e(TAG, "+ ON RESUME +"); // Performing this check in onResume() covers the case in which BT was // not enabled during onStart(), so we were paused to enable it... // onResume() will be called when ACTION_REQUEST_ENABLE activity returns. if (mChatService != null) { // Only if the state is STATE_NONE, do we know that we haven't started already if (mChatService.getState() == BluetoothChatService.STATE_NONE) { // Start the Bluetooth chat services mChatService.start(); } } } private void setupRemote() { Log.d(TAG, "setupRemote()"); // Initialize the array adapter for the conversation thread // Initialize the send button with a listener that for click events mPlayButton = (Button) findViewById(R.id.btnplay); mPlayButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { } }); mPlusButton = (Button)findViewById (R.id.btnplus); mPlusButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { finish(); } }); mMinusButton = (Button)findViewById (R.id.btnminus); mMinusButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { finish(); } }); mDButton = (Button)findViewById (R.id.btnd); mDButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { finish(); } }); mHButton = (Button)findViewById (R.id.btnh); mHButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { finish(); } }); mForwardButton = (Button)findViewById (R.id.btnforward); mForwardButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { finish(); } }); mStopButton = (Button)findViewById (R.id.btnstop); mStopButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { finish(); } }); mOnButton = (Button)findViewById (R.id.btnon); mOnButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { finish(); } }); mRedButton = (Button)findViewById (R.id.btnred); mRedButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { finish(); } }); mGreenButton = (Button)findViewById (R.id.btngreen); mGreenButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { finish(); } }); mBlueButton = (Button)findViewById (R.id.btnblue); mBlueButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { finish(); } }); mYellowButton = (Button)findViewById (R.id.btnyellow); mYellowButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { finish(); } }); // Initialize the BluetoothChatService to perform bluetooth connections mChatService = new BluetoothChatService(this, mHandler); // Initialize the buffer for outgoing messages mOutStringBuffer = new StringBuffer(""); } @Override public synchronized void onPause() { super.onPause(); if(D) Log.e(TAG, "- ON PAUSE -"); } @Override public void onStop() { super.onStop(); if(D) Log.e(TAG, "-- ON STOP --"); } @Override public void onDestroy() { super.onDestroy(); // Stop the Bluetooth chat services if (mChatService != null) mChatService.stop(); if(D) Log.e(TAG, "--- ON DESTROY ---"); } private void ensureDiscoverable() { if(D) Log.d(TAG, "ensure discoverable"); if (mBluetoothAdapter.getScanMode() != BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE) { Intent discoverableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE); discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300); startActivity(discoverableIntent); } } /** * Sends a message. * @param message A string of text to send. */ private void sendData(String data) { // Check that we're actually connected before trying anything if (mChatService.getState() != BluetoothChatService.STATE_CONNECTED) { Toast.makeText(this, R.string.not_connected, Toast.LENGTH_SHORT).show(); return; } // Check that there's actually something to send if (data.length() > 0) { // Get the message bytes and tell the BluetoothChatService to write byte[] send = data.getBytes(); mChatService.write(send); // Reset out string buffer to zero and clear the edit text field mOutStringBuffer.setLength(0); } } // The action listener for the EditText widget, to listen for the return key private TextView.OnEditorActionListener mWriteListener = new TextView.OnEditorActionListener() { public boolean onEditorAction(TextView view, int actionId, KeyEvent event) { // If the action is a key-up event on the return key, send the message if (actionId == EditorInfo.IME_NULL && event.getAction() == KeyEvent.ACTION_UP) { String message = view.getText().toString(); sendData(message); } if(D) Log.i(TAG, "END onEditorAction"); return true; } }; // The Handler that gets information back from the BluetoothChatService private final Handler mHandler = new Handler() { @Override public void handleMessage(Message msg) { switch (msg.what) { case MESSAGE_STATE_CHANGE: if(D) Log.i(TAG, "MESSAGE_STATE_CHANGE: " + msg.arg1); switch (msg.arg1) { case BluetoothChatService.STATE_CONNECTED: mTitle.setText(R.string.title_connected_to); mTitle.append(mConnectedDeviceName); break; case BluetoothChatService.STATE_CONNECTING: mTitle.setText(R.string.title_connecting); break; case BluetoothChatService.STATE_LISTEN: case BluetoothChatService.STATE_NONE: mTitle.setText(R.string.title_not_connected); break; } break; //Baustelle case MESSAGE_WRITE: byte[] writeBuf = (byte[])msg.obj; String WriteData = new String(writeBuf); //Baustelle break; case MESSAGE_READ: byte[] readBuf = (byte[]) msg.obj; // construct a string from the valid bytes in the buffer String readData = new String(readBuf, 0, msg.arg1); break; case MESSAGE_DEVICE_NAME: // save the connected device's name mConnectedDeviceName = msg.getData().getString(DEVICE_NAME); Toast.makeText(getApplicationContext(), "Connected to " + mConnectedDeviceName, Toast.LENGTH_SHORT).show(); break; } } }; public void onActivityResult(int requestCode, int resultCode, Intent data) { if(D) Log.d(TAG, "onActivityResult " + resultCode); switch (requestCode) { case REQUEST_CONNECT_DEVICE: // When DeviceListActivity returns with a device to connect if (resultCode == Activity.RESULT_OK) { // Get the device MAC address String address = data.getExtras() .getString(DeviceListActivity.EXTRA_DEVICE_ADDRESS); // Get the BLuetoothDevice object BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address); // Attempt to connect to the device mChatService.connect(device); } break; case REQUEST_ENABLE_BT: // When the request to enable Bluetooth returns if (resultCode == Activity.RESULT_OK) { // Bluetooth is now enabled, so set up a chat session setupRemote(); } else { // User did not enable Bluetooth or an error occured Log.d(TAG, "BT not enabled"); Toast.makeText(this, R.string.bt_not_enabled_leaving, Toast.LENGTH_SHORT).show(); finish(); } } } @Override public boolean onCreateOptionsMenu(Menu menu) { MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.option_menu, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.scan: // Launch the DeviceListActivity to see devices and do scan Intent serverIntent = new Intent(this, DeviceListActivity.class); startActivityForResult(serverIntent, REQUEST_CONNECT_DEVICE); return true; case R.id.discoverable: // Ensure this device is discoverable by others ensureDiscoverable(); return true; } return false; } }