--- /dev/null
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.altusmetrum.AltosDroid;
+
+import java.util.Set;
+import org.altusmetrum.AltosDroid.R;
+
+import android.app.Activity;
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothDevice;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.os.Bundle;
+import android.view.View;
+import android.view.Window;
+import android.view.View.OnClickListener;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.Button;
+import android.widget.ListView;
+import android.widget.TextView;
+import android.widget.AdapterView.OnItemClickListener;
+
+/**
+ * This Activity appears as a dialog. It lists any paired devices and
+ * devices detected in the area after discovery. When a device is chosen
+ * by the user, the MAC address of the device is sent back to the parent
+ * Activity in the result Intent.
+ */
+public class DeviceListActivity extends Activity {
+
+ // Return Intent extra
+ public static final String EXTRA_DEVICE_ADDRESS = "device_address";
+ public static final String EXTRA_DEVICE_NAME = "device_name";
+
+ // Member fields
+ private BluetoothAdapter mBtAdapter;
+ private ArrayAdapter<String> mPairedDevicesArrayAdapter;
+ private ArrayAdapter<String> mNewDevicesArrayAdapter;
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+
+ // Setup the window
+ requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
+ setContentView(R.layout.device_list);
+
+ // Set result CANCELED incase the user backs out
+ setResult(Activity.RESULT_CANCELED);
+
+ // Initialize the button to perform device discovery
+ Button scanButton = (Button) findViewById(R.id.button_scan);
+ scanButton.setOnClickListener(new OnClickListener() {
+ public void onClick(View v) {
+ doDiscovery();
+ v.setVisibility(View.GONE);
+ }
+ });
+
+ // Initialize array adapters. One for already paired devices and
+ // one for newly discovered devices
+ mPairedDevicesArrayAdapter = new ArrayAdapter<String>(this, R.layout.device_name);
+ mNewDevicesArrayAdapter = new ArrayAdapter<String>(this, R.layout.device_name);
+
+ // Find and set up the ListView for paired devices
+ ListView pairedListView = (ListView) findViewById(R.id.paired_devices);
+ pairedListView.setAdapter(mPairedDevicesArrayAdapter);
+ pairedListView.setOnItemClickListener(mDeviceClickListener);
+
+ // Find and set up the ListView for newly discovered devices
+ ListView newDevicesListView = (ListView) findViewById(R.id.new_devices);
+ newDevicesListView.setAdapter(mNewDevicesArrayAdapter);
+ newDevicesListView.setOnItemClickListener(mDeviceClickListener);
+
+ // Register for broadcasts when a device is discovered
+ IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
+ this.registerReceiver(mReceiver, filter);
+
+ // Register for broadcasts when discovery has finished
+ filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
+ this.registerReceiver(mReceiver, filter);
+
+ // Get the local Bluetooth adapter
+ mBtAdapter = BluetoothAdapter.getDefaultAdapter();
+
+ // Get a set of currently paired devices
+ Set<BluetoothDevice> pairedDevices = mBtAdapter.getBondedDevices();
+
+ // If there are paired devices, add each one to the ArrayAdapter
+ if (pairedDevices.size() > 0) {
+ findViewById(R.id.title_paired_devices).setVisibility(View.VISIBLE);
+ for (BluetoothDevice device : pairedDevices)
+ if (device.getName().startsWith("TeleBT"))
+ mPairedDevicesArrayAdapter.add(device.getName() + "\n" + device.getAddress());
+
+ } else {
+ String noDevices = getResources().getText(R.string.none_paired).toString();
+ mPairedDevicesArrayAdapter.add(noDevices);
+ }
+ }
+
+ @Override
+ protected void onDestroy() {
+ super.onDestroy();
+
+ // Make sure we're not doing discovery anymore
+ if (mBtAdapter != null) {
+ mBtAdapter.cancelDiscovery();
+ }
+
+ // Unregister broadcast listeners
+ this.unregisterReceiver(mReceiver);
+ }
+
+ /**
+ * Start device discover with the BluetoothAdapter
+ */
+ private void doDiscovery() {
+ AltosDebug.debug("doDiscovery()");
+
+ // Indicate scanning in the title
+ setProgressBarIndeterminateVisibility(true);
+ setTitle(R.string.scanning);
+
+ // Turn on sub-title for new devices
+ findViewById(R.id.title_new_devices).setVisibility(View.VISIBLE);
+
+ // If we're already discovering, stop it
+ if (mBtAdapter.isDiscovering()) {
+ mBtAdapter.cancelDiscovery();
+ }
+
+ // Request discover from BluetoothAdapter
+ mBtAdapter.startDiscovery();
+ }
+
+ // The on-click listener for all devices in the ListViews
+ private OnItemClickListener mDeviceClickListener = new OnItemClickListener() {
+ public void onItemClick(AdapterView<?> av, View v, int arg2, long arg3) {
+ // Cancel discovery because it's costly and we're about to connect
+ mBtAdapter.cancelDiscovery();
+
+ // Get the device MAC address, which is the last 17 chars in the View
+ String info = ((TextView) v).getText().toString();
+ String address = info.substring(info.length() - 17);
+
+ int newline = info.indexOf('\n');
+
+ String name = null;
+ if (newline > 0)
+ name = info.substring(0, newline);
+ else
+ name = info;
+
+ AltosDebug.debug("******* selected item '%s'", info);
+
+ // Create the result Intent and include the MAC address
+ Intent intent = new Intent();
+ intent.putExtra(EXTRA_DEVICE_ADDRESS, address);
+ intent.putExtra(EXTRA_DEVICE_NAME, name);
+
+ // Set result and finish this Activity
+ setResult(Activity.RESULT_OK, intent);
+ finish();
+ }
+ };
+
+ // The BroadcastReceiver that listens for discovered devices and
+ // changes the title when discovery is finished
+ private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
+ @Override
+ public void onReceive(Context context, Intent intent) {
+ String action = intent.getAction();
+
+ // When discovery finds a device
+ if (BluetoothDevice.ACTION_FOUND.equals(action)) {
+
+ /* Get the BluetoothDevice object from the Intent
+ */
+ BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
+
+ /* If it's already paired, skip it, because it's been listed already
+ */
+ if (device != null && device.getBondState() != BluetoothDevice.BOND_BONDED)
+ {
+ String name = device.getName();
+ if (name != null && name.startsWith("TeleBT"))
+ mNewDevicesArrayAdapter.add(device.getName() + "\n" + device.getAddress());
+ }
+
+ /* When discovery is finished, change the Activity title
+ */
+ } else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
+ setProgressBarIndeterminateVisibility(false);
+ setTitle(R.string.select_device);
+ if (mNewDevicesArrayAdapter.getCount() == 0) {
+ String noDevices = getResources().getText(R.string.none_found).toString();
+ mNewDevicesArrayAdapter.add(noDevices);
+ }
+ }
+ }
+ };
+
+}
projects / fw / altos / blobdiff