问.net Maui蓝牙在Android设备上的运行时权限检查和设置

EN

  <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
  <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
  <uses-permission android:name="android.permission.BLUETOOTH" />
  <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />

  <uses-permission android:name="android.permission.BLUETOOTH_SCAN" />
  <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
  <uses-permission android:name="android.permission.BLUETOOTH_ADVERTISE" />

    <uses-feature android:name="android.hardware.bluetooth_le" android:required="true"/>
</manifest>

//other imports are in a GlobalUsing.cs file
using Android;
using Android.OS;

namespace TSDZ2Monitor.Pages;

public partial class BluetoothPage : ContentPage
{
    public BluetoothPage()
    {
        InitializeComponent();

        *//so I start my code here, but I suspect that I should be using some kind of page displayed, on startup event?*

    Console.WriteLine("Bluetooth here");

    getBLEPermission();
    startScan();
    
    *//Need to get user to accept bluetooth permissions in Android 6.0+,v23 that is the Run-time Permissions check - should this be in the constructor?*
    async void getBLEPermission()
    {
      bool blePermissionGranted = false;

      int sdk = (int)Build.VERSION.SdkInt; //<-- if you want to check > 23


      //Do the check to see if permission already granted - how?


      if (!blePermissionGranted)  //so go and get permission, display an alert
      {  

        blePermissionGranted = await App.Current.MainPage.DisplayAlert("Alert", "Allow use of bluetooth for scanning for your peripheral devices such as heart rate monitor etc?", "Allow", "Deny");
        if (blePermissionGranted)
        {
          //Set the permission on android - how

        }
        //Console.WriteLine($"SDK version {sdk}");
        //Console.WriteLine($"BLE permission granted: {blePermissionGranted}");

      }

    }

    async void startScan()
    {
       //TODO 
    }
  }

}

//using InTheHand.Bluetooth;

namespace TSDZ2Monitor.Pages;

public partial class BluetoothPage : ContentPage
{
    public BluetoothPage()
    {
        InitializeComponent();

        Console.WriteLine("Bluetooth here");

    getBLEPermission();

    static async void getBLEPermission()
    {
      PermissionStatus status = await Permissions.CheckStatusAsync<Permissions.LocationWhenInUse>();
      if (status != PermissionStatus.Granted)
      {
        status = await Permissions.RequestAsync<Permissions.LocationWhenInUse>();
        if (status != PermissionStatus.Granted)
        {
          //well kill the app because it's no use if bluetooth not enabled
        }
      }
    }


  }

}