472 lines
18 KiB
Java
472 lines
18 KiB
Java
package nodomain.freeyourgadget.gadgetbridge.activities;
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import android.Manifest;
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import android.annotation.TargetApi;
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import android.app.Activity;
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import android.bluetooth.BluetoothAdapter;
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import android.bluetooth.BluetoothDevice;
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import android.bluetooth.BluetoothManager;
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import android.bluetooth.le.ScanCallback;
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import android.bluetooth.le.ScanResult;
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import android.bluetooth.le.ScanSettings;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.content.pm.PackageManager;
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import android.os.Build;
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import android.os.Bundle;
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import android.os.Handler;
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import android.os.Message;
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import android.os.ParcelUuid;
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import android.os.Parcelable;
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import android.support.v4.app.ActivityCompat;
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import android.view.View;
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import android.widget.AdapterView;
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import android.widget.Button;
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import android.widget.ListView;
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import android.widget.ProgressBar;
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import android.widget.Toast;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.util.ArrayList;
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import nodomain.freeyourgadget.gadgetbridge.R;
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import nodomain.freeyourgadget.gadgetbridge.adapter.DeviceCandidateAdapter;
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import nodomain.freeyourgadget.gadgetbridge.devices.DeviceCoordinator;
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import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice;
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import nodomain.freeyourgadget.gadgetbridge.impl.GBDeviceCandidate;
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import nodomain.freeyourgadget.gadgetbridge.util.DeviceHelper;
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import nodomain.freeyourgadget.gadgetbridge.util.GB;
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import static android.bluetooth.le.ScanSettings.MATCH_MODE_STICKY;
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import static android.bluetooth.le.ScanSettings.SCAN_MODE_LOW_LATENCY;
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public class DiscoveryActivity extends GBActivity implements AdapterView.OnItemClickListener {
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private static final Logger LOG = LoggerFactory.getLogger(DiscoveryActivity.class);
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private static final long SCAN_DURATION = 60000; // 60s
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private ScanCallback newLeScanCallback = null;
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private final Handler handler = new Handler();
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private final BroadcastReceiver bluetoothReceiver = new BroadcastReceiver() {
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@Override
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public void onReceive(Context context, Intent intent) {
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switch (intent.getAction()) {
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case BluetoothAdapter.ACTION_DISCOVERY_STARTED:
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discoveryStarted(Scanning.SCANNING_BT);
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break;
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case BluetoothAdapter.ACTION_DISCOVERY_FINISHED:
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// continue with LE scan, if available
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if (isScanning == Scanning.SCANNING_BT) {
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checkAndRequestLocationPermission();
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startDiscovery(Scanning.SCANNING_BTLE);
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} else {
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discoveryFinished();
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}
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break;
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case BluetoothAdapter.ACTION_STATE_CHANGED:
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int oldState = intent.getIntExtra(BluetoothAdapter.EXTRA_PREVIOUS_STATE, BluetoothAdapter.STATE_OFF);
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int newState = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.STATE_OFF);
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bluetoothStateChanged(oldState, newState);
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break;
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case BluetoothDevice.ACTION_FOUND: {
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BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
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short rssi = intent.getShortExtra(BluetoothDevice.EXTRA_RSSI, GBDevice.RSSI_UNKNOWN);
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handleDeviceFound(device, rssi);
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break;
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}
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case BluetoothDevice.ACTION_BOND_STATE_CHANGED: {
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BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
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if (device != null && device.getAddress().equals(bondingAddress)) {
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int bondState = intent.getIntExtra(BluetoothDevice.EXTRA_BOND_STATE, BluetoothDevice.BOND_NONE);
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if (bondState == BluetoothDevice.BOND_BONDED) {
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GB.toast(DiscoveryActivity.this, "Successfully bonded with: " + bondingAddress, Toast.LENGTH_SHORT, GB.INFO);
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finish();
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}
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}
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}
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}
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}
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};
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private final BluetoothAdapter.LeScanCallback leScanCallback = new BluetoothAdapter.LeScanCallback() {
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@Override
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public void onLeScan(BluetoothDevice device, int rssi, byte[] scanRecord) {
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LOG.warn(device.getName() + ": " + ((scanRecord != null) ? scanRecord.length : -1));
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logMessageContent(scanRecord);
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handleDeviceFound(device, (short) rssi);
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}
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};
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// why use a method to to get callback?
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// because this callback need API >= 21
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// we cant add @TARGETAPI("Lollipop") at class header
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// so use a method woth SDK check to return this callback
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private ScanCallback getScanCallback() {
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
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newLeScanCallback = new ScanCallback() {
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@TargetApi(Build.VERSION_CODES.LOLLIPOP)
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@Override
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public void onScanResult(int callbackType, ScanResult result) {
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super.onScanResult(callbackType, result);
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try {
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LOG.warn(result.getDevice().getName() + ": " +
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((result.getScanRecord() != null) ? result.getScanRecord().getBytes().length : -1));
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//logMessageContent(result.getScanRecord().getBytes());
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handleDeviceFound(result.getDevice(), (short) result.getRssi());
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} catch (NullPointerException e) {
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e.printStackTrace();
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}
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}
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};
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}
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return newLeScanCallback;
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}
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public void logMessageContent(byte[] value) {
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if (value != null) {
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for (byte b : value) {
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LOG.warn("DATA: " + String.format("0x%2x", b) + " - " + (char) (b & 0xff));
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}
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}
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}
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private final Runnable stopRunnable = new Runnable() {
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@Override
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public void run() {
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stopDiscovery();
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}
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};
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private ProgressBar progressView;
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private BluetoothAdapter adapter;
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private final ArrayList<GBDeviceCandidate> deviceCandidates = new ArrayList<>();
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private DeviceCandidateAdapter cadidateListAdapter;
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private Button startButton;
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private Scanning isScanning = Scanning.SCANNING_OFF;
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private String bondingAddress;
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private enum Scanning {
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SCANNING_BT,
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SCANNING_BTLE,
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SCANNING_NEW_BTLE,
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SCANNING_OFF
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}
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_discovery);
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startButton = (Button) findViewById(R.id.discovery_start);
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startButton.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View v) {
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onStartButtonClick(startButton);
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}
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});
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progressView = (ProgressBar) findViewById(R.id.discovery_progressbar);
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progressView.setProgress(0);
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progressView.setIndeterminate(true);
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progressView.setVisibility(View.GONE);
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ListView deviceCandidatesView = (ListView) findViewById(R.id.discovery_deviceCandidatesView);
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cadidateListAdapter = new DeviceCandidateAdapter(this, deviceCandidates);
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deviceCandidatesView.setAdapter(cadidateListAdapter);
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deviceCandidatesView.setOnItemClickListener(this);
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IntentFilter bluetoothIntents = new IntentFilter();
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bluetoothIntents.addAction(BluetoothDevice.ACTION_FOUND);
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bluetoothIntents.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED);
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bluetoothIntents.addAction(BluetoothAdapter.ACTION_DISCOVERY_STARTED);
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bluetoothIntents.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
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bluetoothIntents.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
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registerReceiver(bluetoothReceiver, bluetoothIntents);
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startDiscovery();
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}
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@Override
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protected void onSaveInstanceState(Bundle outState) {
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super.onSaveInstanceState(outState);
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outState.putParcelableArrayList("deviceCandidates", deviceCandidates);
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}
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@Override
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protected void onRestoreInstanceState(Bundle savedInstanceState) {
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super.onRestoreInstanceState(savedInstanceState);
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ArrayList<Parcelable> restoredCandidates = savedInstanceState.getParcelableArrayList("deviceCandidates");
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if (restoredCandidates != null) {
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deviceCandidates.clear();
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for (Parcelable p : restoredCandidates) {
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deviceCandidates.add((GBDeviceCandidate) p);
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}
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}
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}
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public void onStartButtonClick(View button) {
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LOG.debug("Start Button clicked");
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if (isScanning()) {
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stopDiscovery();
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} else {
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startDiscovery();
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}
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}
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@Override
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protected void onDestroy() {
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unregisterReceiver(bluetoothReceiver);
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super.onDestroy();
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}
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private void handleDeviceFound(BluetoothDevice device, short rssi) {
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LOG.debug("found device: " + device.getName() + ", " + device.getAddress());
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if (LOG.isDebugEnabled()) {
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ParcelUuid[] uuids = device.getUuids();
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if (uuids != null && uuids.length > 0) {
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for (ParcelUuid uuid : uuids) {
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LOG.debug(" supports uuid: " + uuid.toString());
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}
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}
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}
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if (device.getBondState() == BluetoothDevice.BOND_BONDED) {
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return; // ignore already bonded devices
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}
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GBDeviceCandidate candidate = new GBDeviceCandidate(device, rssi);
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if (DeviceHelper.getInstance().isSupported(candidate)) {
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int index = deviceCandidates.indexOf(candidate);
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if (index >= 0) {
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deviceCandidates.set(index, candidate); // replace
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} else {
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deviceCandidates.add(candidate);
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}
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cadidateListAdapter.notifyDataSetChanged();
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}
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}
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/**
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* Pre: bluetooth is available, enabled and scanning is off.
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* Post: BT is discovering
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*/
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private void startDiscovery() {
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if (isScanning()) {
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LOG.warn("Not starting discovery, because already scanning.");
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return;
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}
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
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startDiscovery(Scanning.SCANNING_NEW_BTLE);
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} else {
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startDiscovery(Scanning.SCANNING_BT);
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}
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}
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private void startDiscovery(Scanning what) {
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LOG.info("Starting discovery: " + what);
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discoveryStarted(what); // just to make sure
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if (ensureBluetoothReady()) {
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if (what == Scanning.SCANNING_BT) {
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startBTDiscovery();
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} else if (what == Scanning.SCANNING_BTLE) {
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if (GB.supportsBluetoothLE()) {
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startBTLEDiscovery();
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} else {
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discoveryFinished();
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}
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} else if (what == Scanning.SCANNING_NEW_BTLE) {
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if (GB.supportsBluetoothLE()) {
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startNEWBTLEDiscovery();
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} else {
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discoveryFinished();
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}
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}
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} else {
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discoveryFinished();
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Toast.makeText(this, "Enable Bluetooth to discover devices.", Toast.LENGTH_LONG).show();
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}
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}
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private boolean isScanning() {
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return isScanning != Scanning.SCANNING_OFF;
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}
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private void stopDiscovery() {
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LOG.info("Stopping discovery");
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if (isScanning()) {
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Scanning wasScanning = isScanning;
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// unfortunately, we don't always get a call back when stopping the scan, so
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// we do it manually; BEFORE stopping the scan!
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discoveryFinished();
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if (wasScanning == Scanning.SCANNING_BT) {
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stopBTDiscovery();
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} else if (wasScanning == Scanning.SCANNING_BTLE) {
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stopBTLEDiscovery();
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} else if (wasScanning == Scanning.SCANNING_NEW_BTLE) {
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stopNewBTLEDiscovery();
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}
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handler.removeMessages(0, stopRunnable);
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}
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}
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private void stopBTLEDiscovery() {
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adapter.stopLeScan(leScanCallback);
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}
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private void stopBTDiscovery() {
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adapter.cancelDiscovery();
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}
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@TargetApi(Build.VERSION_CODES.LOLLIPOP)
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private void stopNewBTLEDiscovery() {
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adapter.getBluetoothLeScanner().stopScan(newLeScanCallback);
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}
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private void bluetoothStateChanged(int oldState, int newState) {
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discoveryFinished();
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if (newState == BluetoothAdapter.STATE_ON) {
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this.adapter = BluetoothAdapter.getDefaultAdapter();
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startButton.setEnabled(true);
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} else {
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this.adapter = null;
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startButton.setEnabled(false);
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}
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}
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private void discoveryFinished() {
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isScanning = Scanning.SCANNING_OFF;
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progressView.setVisibility(View.GONE);
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startButton.setText(getString(R.string.discovery_start_scanning));
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}
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private void discoveryStarted(Scanning what) {
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isScanning = what;
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progressView.setVisibility(View.VISIBLE);
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startButton.setText(getString(R.string.discovery_stop_scanning));
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}
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private boolean ensureBluetoothReady() {
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boolean available = checkBluetoothAvailable();
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startButton.setEnabled(available);
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if (available) {
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adapter.cancelDiscovery();
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// must not return the result of cancelDiscovery()
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// appears to return false when currently not scanning
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return true;
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}
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return false;
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}
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private boolean checkBluetoothAvailable() {
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BluetoothManager bluetoothService = (BluetoothManager) getSystemService(BLUETOOTH_SERVICE);
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if (bluetoothService == null) {
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LOG.warn("No bluetooth available");
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this.adapter = null;
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return false;
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}
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BluetoothAdapter adapter = bluetoothService.getAdapter();
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if (adapter == null) {
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LOG.warn("No bluetooth available");
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this.adapter = null;
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return false;
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}
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if (!adapter.isEnabled()) {
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LOG.warn("Bluetooth not enabled");
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Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
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startActivity(enableBtIntent);
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this.adapter = null;
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return false;
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}
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this.adapter = adapter;
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return true;
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}
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// New BTLE Discovery use startScan (List<ScanFilter> filters,
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// ScanSettings settings,
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// ScanCallback callback)
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// Its added on API21
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@TargetApi(Build.VERSION_CODES.LOLLIPOP)
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private void startNEWBTLEDiscovery() {
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// Only use new APi when user use Lollipop+ device
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LOG.info("Start New BTLE Discovery");
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handler.removeMessages(0, stopRunnable);
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handler.sendMessageDelayed(getPostMessage(stopRunnable), SCAN_DURATION);
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adapter.getBluetoothLeScanner().startScan(null, getScanSettings(), getScanCallback());
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}
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@TargetApi(Build.VERSION_CODES.LOLLIPOP)
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private ScanSettings getScanSettings() {
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
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return new ScanSettings.Builder()
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.setScanMode(SCAN_MODE_LOW_LATENCY)
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.setMatchMode(MATCH_MODE_STICKY)
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.build();
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} else {
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return new ScanSettings.Builder()
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.setScanMode(SCAN_MODE_LOW_LATENCY)
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.build();
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}
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}
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private void startBTLEDiscovery() {
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LOG.info("Starting BTLE Discovery");
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handler.removeMessages(0, stopRunnable);
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handler.sendMessageDelayed(getPostMessage(stopRunnable), SCAN_DURATION);
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adapter.startLeScan(leScanCallback);
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}
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private void startBTDiscovery() {
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LOG.info("Starting BT Discovery");
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handler.removeMessages(0, stopRunnable);
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handler.sendMessageDelayed(getPostMessage(stopRunnable), SCAN_DURATION);
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adapter.startDiscovery();
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}
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private void checkAndRequestLocationPermission() {
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if (ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
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ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, 0);
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}
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}
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private Message getPostMessage(Runnable runnable) {
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Message m = Message.obtain(handler, runnable);
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m.obj = runnable;
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return m;
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}
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@Override
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public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
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GBDeviceCandidate deviceCandidate = deviceCandidates.get(position);
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if (deviceCandidate == null) {
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LOG.error("Device candidate clicked, but item not found");
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return;
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}
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stopDiscovery();
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DeviceCoordinator coordinator = DeviceHelper.getInstance().getCoordinator(deviceCandidate);
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Class<? extends Activity> pairingActivity = coordinator.getPairingActivity();
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if (pairingActivity != null) {
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Intent intent = new Intent(this, pairingActivity);
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intent.putExtra(DeviceCoordinator.EXTRA_DEVICE_MAC_ADDRESS, deviceCandidate.getMacAddress());
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startActivity(intent);
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} else {
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try {
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BluetoothDevice btDevice = adapter.getRemoteDevice(deviceCandidate.getMacAddress());
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if (btDevice.createBond()) {
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// async, wait for bonding event to finish this activity
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bondingAddress = btDevice.getAddress();
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}
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} catch (Exception e) {
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LOG.error("Error pairing device: " + deviceCandidate.getMacAddress());
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}
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}
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}
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}
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