src/com/google/android/apps/adk2/activity/BTDeviceListActivity.java

/*
 * Copyright (C) 2012 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 com.google.android.apps.adk2.activity;

import java.util.Set;

import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;

import com.google.android.apps.adk2.R;

public class BTDeviceListActivity extends Adk2BaseActivity implements
		OnItemClickListener {
	private BluetoothAdapter mBtAdapter;
	private ArrayAdapter<String> mPairedDevicesArrayAdapter;

	public static String EXTRA_DEVICE_ADDRESS = "device_address";

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.device_list);

		mPairedDevicesArrayAdapter = 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(this);

		// 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) {
				mPairedDevicesArrayAdapter.add(device.getName() + "\n"
						+ device.getAddress());
			}
		} else {
			String noDevices = getResources().getText(R.string.none_paired)
					.toString();
			mPairedDevicesArrayAdapter.add(noDevices);
		}
	}

	public void onItemClick(AdapterView<?> arg0, View v, int arg2, long arg3) {
		mBtAdapter.cancelDiscovery();

		// Get the device MAC address, which is the last 17 chars in the View
		String info = ((TextView) v).getText().toString();

		if (info.equals(getResources().getText(R.string.none_paired).toString()))
			return; // do not proceed if we clicked the "there are no devices"
					// message

		String address = info.substring(info.length() - 17);
		Intent connectIntent = new Intent(this, HomeActivity.class);
		connectIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
		connectIntent.putExtra(EXTRA_DEVICE_ADDRESS, address);
		startActivity(connectIntent);
	}

}