以开启蓝牙为例：
private val openBLELauncher =
registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
Log.d("test", ": $result")
if (result.resultCode == RESULT_OK) {
}
}
private fun turnOnBLE() {
val bluetoothManager =
requireContext().getSystemService(Context.BLUETOOTH_SERVICE) as BluetoothManager
val bluetoothAdapter = bluetoothManager.adapter
if (!bluetoothAdapter.isEnabled) {
val enableBtIntent = Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE)
openBLELauncher.launch(enableBtIntent)
}
}
