嗨，在下面的代码中，我正在通过蓝牙和位置连接设备。 这是第一次请求允许打开该位置，但未启用该位置。
任何人都可以帮助我如何在下面的代码中像蓝牙一样自动启用位置
例如：在蓝牙中，它正在请求许可并将其打开。 但是对于首次定位，它正在寻求许可，但未启用该位置。
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_scan_device);
ButterKnife.bind(this);
mProgressDialog = new ProgressDialog(this);
mPref = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
initToolBar();
mBleDevices = new ArrayList<>();
mAdapter = new DeviceListAdapter(this);
mDeviceListView.setAdapter(mAdapter);
LinearLayoutManager manager = new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false);
mDeviceListView.setLayoutManager(manager);
mDeviceListView.addOnItemTouchListener(new RecyclerItemClickListener(this, new RecyclerItemClickListener.OnItemClickListener() {
@Override
public void onItemClick(View view, int position) {
showProgressDialog();
List<BluetoothDevice> bluetoothDevices = mAdapter.getBluetoothDevices();
if (bluetoothDevices != null) {
if (bluetoothDevices.size() > position) {
BluetoothDevice bluetoothDevice = bluetoothDevices.get(position);
if (bluetoothDevice != null) {
String address = bluetoothDevice.getAddress();
mBleService.connect(address);
}
}
}
}
}));
final IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(BleService.ACTION_DEVICE_FOUND);
intentFilter.addAction(BleService.ACTION_GATT_CONNECTED);
intentFilter.addAction(BleService.ACTION_GAT_CONNECTING);
intentFilter.addAction(BleService.ACTION_GATT_DISCONNECTED);
intentFilter.addAction(BleService.ACTION_GAT_SERVICE_DISCOVERED);
registerReceiver(mGattUpdateReceiver, intentFilter);
if (ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
requestPermissions(new String[]{Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.BLUETOOTH,Manifest.permission.ACCESS_FINE_LOCATION
, Manifest.permission.BLUETOOTH_ADMIN, Manifest.permission.ACCESS_FINE_LOCATION}, PERMISSION_REQUEST_COARSE_LOCATION);
}
} else {
if (mServiceConnection != null) {
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, 101);
}
Intent intent = new Intent(this, BleService.class);
bindService(intent, mServiceConnection, Context.BIND_AUTO_CREATE);
}
}
private void showProgressDialog() {
if (mProgressDialog == null) {
mProgressDialog = new ProgressDialog(this);
}
mProgressDialog.setMessage(getString(R.string.loading));
mProgressDialog.setCanceledOnTouchOutside(false);
mProgressDialog.show();
}
private ServiceConnection mServiceConnection = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName componentName, IBinder iBinder) {
mBleService = ((BleService.LocalBinder) iBinder).getLeService();
if (mBleService != null) {
mBleService.scanLeDevice(true);
mScanStatus.setVisibility(View.VISIBLE);
mScanStatus.setText(R.string.scanning_device);
}
}
@Override
public void onServiceDisconnected(ComponentName componentName) {
}
};
@Override
protected void onResume() {
super.onResume();
}
@Override
protected void onStart() {
super.onStart();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == 101) {
if (mBleService != null) {
mBleService.scanLeDevice(true);
}
}
}
private BroadcastReceiver mGattUpdateReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
switch (action) {
case BleService.ACTION_DEVICE_FOUND:
BluetoothDevice device = (BluetoothDevice) intent.getParcelableExtra(BleService.EXTRA_DEVICE);
if (mBleDevices != null) {
if (!mBleDevices.contains(device)) {
mBleDevices.add(device);
mAdapter.udpateBluetoothDevices(mBleDevices);
mAdapter.notifyDataSetChanged();
}
}
break;
case BleService.ACTION_GATT_CONNECTED:
Log.d(TAG, "!Action gat connected...");
mBleService.scanLeDevice(false);
mScanStatus.setVisibility(View.VISIBLE);
mScanStatus.setText(getString(R.string.connected));
break;
case BleService.ACTION_GAT_CONNECTING:
mScanStatus.setVisibility(View.VISIBLE);
mScanStatus.setText(getString(R.string.connecting));
Log.d(TAG, "!Action Gat Connecting..");
break;
case BleService.ACTION_GATT_DISCONNECTED:
mScanStatus.setVisibility(View.VISIBLE);
mScanStatus.setText(getString(R.string.disconnected));
mScanningProgress.setVisibility(View.GONE);
mRefresh.setVisibility(View.VISIBLE);
if (mProgressDialog != null) {
mProgressDialog.dismiss();
}
Log.d(TAG, "!Action Gat Disconnected..");
break;
case BleService.ACTION_GAT_SERVICE_DISCOVERED:
boolean isOperator = mPref.getBoolean(Constants.IS_OPERATOR, false);
if (mProgressDialog != null) {
mProgressDialog.dismiss();
}
if (isOperator) {
Intent homeIntent = new Intent(DeviceScanActivity.this, HomeScreenActivity.class);
startActivity(homeIntent);
finish();
} else {
Intent lightControllIntent = new Intent(DeviceScanActivity.this, LightConfigurationActivity.class);
startActivity(lightControllIntent);
finish();
}
mScanStatus.setText(getString(R.string.discoveringService));
Log.d(TAG, "!Action Gat Discovering..");
break;
}
}
};
private void initToolBar() {
mRefresh.setVisibility(View.VISIBLE);
}
@OnClick(R.id.refresh)
public void onClick() {
mScanStatus.setVisibility(View.VISIBLE);
mRefresh.setVisibility(View.GONE);
mScanningProgress.setVisibility(View.VISIBLE);
mBleDevices.clear();
mAdapter.udpateBluetoothDevices(new ArrayList<BluetoothDevice>());
mAdapter.notifyDataSetChanged();
}
@Override
protected void onDestroy() {
if (mServiceConnection != null) {
unbindService(mServiceConnection);
}
if (mGattUpdateReceiver != null) {
unregisterReceiver(mGattUpdateReceiver);
}
super.onDestroy();
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
if (requestCode == PERMISSION_REQUEST_COARSE_LOCATION) {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
if (mServiceConnection != null) {
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, 101);
}
Intent intent = new Intent(this, BleService.class);
bindService(intent, mServiceConnection, Context.BIND_AUTO_CREATE);
} else {
finish();
}
}
}
答案 0 :(得分：0)
如果设备未植根，则无法通过编程方式启用位置信息。
这是代码，如何要求用户启用Fragment中的位置：
override fun checkLocationSettings() {
if (activity != null) {
locationSettingsTask.addOnFailureListener(activity!!) { exception ->
if (exception is ResolvableApiException) {
try {
exception.startResolutionForResult(activity,
REQUEST_CODE_CHECK_LOCATION_SETTINGS)
} catch (ignore: Exception) {
// Empty
}
}
}
}
}
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
if (requestCode == REQUEST_CODE_CHECK_LOCATION_SETTINGS) {
if (resultCode == RESULT_OK) {
presenter.resolveCurrentLocation()
}
}
}