@Override protected void onPause() { super.onPause(); if (mBluetoothAdapter != null && mBluetoothAdapter.isEnabled()) { scanLeDevice(false); } }
@Override protected void onResume() { super.onResume(); if (mBluetoothAdapter == null || !mBluetoothAdapter.isEnabled()) { Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT); } else { if (Build.VERSION.SDK_INT >= 21) { mLEScanner = mBluetoothAdapter.getBluetoothLeScanner(); settings = new ScanSettings.Builder().setScanMode(ScanSettings.SCAN_MODE_LOW_LATENCY).build(); filters = new ArrayList<ScanFilter>(); } scanLeDevice(true); } }