smart-bow-infrared/Assets/BowArrow/Scripts/Bluetooth/BluetoothHelperAndroid.cs

using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.Android;

public class BluetoothHelperAndroid
{
    public static bool IsBluetoothEnabled()
    {
        using (var classBluetoothAdapter = new AndroidJavaClass("android.bluetooth.BluetoothAdapter"))
        using (var bluetoothAdapter = classBluetoothAdapter.CallStatic<AndroidJavaObject>("getDefaultAdapter"))
        {
            if (bluetoothAdapter == null)
            {
                Debug.Log("当前设备不支持蓝牙功能");
                return false;
            }
            bool isEnabled = bluetoothAdapter.Call<bool>("isEnabled");
            return isEnabled;
        }
    }

    public static bool RequestBluetoothPermissions(UnityAction onAllGranted, UnityAction<string> onDenied)
    {
        using (var buildVersion = new AndroidJavaClass("android.os.Build$VERSION"))
        {
            int sdkInt = buildVersion.GetStatic<int>("SDK_INT");
            List<string> permissionListA = new List<string>();
            List<string> permissionListB = new List<string>();
            if (sdkInt >= 23)
            {
                permissionListA.Add(Permission.CoarseLocation);
                permissionListA.Add(Permission.FineLocation);
                if (sdkInt < 31)
                {
                    permissionListB.Add("android.permission.BLUETOOTH");
                    permissionListB.Add("android.permission.BLUETOOTH_ADMIN");
                }
                else
                {
                    permissionListB.Add("android.permission.BLUETOOTH_SCAN");
                    permissionListB.Add("android.permission.BLUETOOTH_ADVERTISE");
                    permissionListB.Add("android.permission.BLUETOOTH_CONNECT");
                }
            }
            if (IsPermissionsGranted(permissionListA)
                && IsPermissionsGranted(permissionListB)) return false;
            RequestUserPermissions(permissionListA.ToArray(), () => {
                RequestUserPermissions(permissionListB.ToArray(), onAllGranted, onDenied);
            }, onDenied);
            return true;
        }
    }

    private static bool IsPermissionsGranted(List<string> permissions)
    {
        foreach (var permission in permissions)
            if (!Permission.HasUserAuthorizedPermission(permission)) return false;
        return true;
    }

    private static void RequestUserPermissions(string[] permissions, UnityAction onAllGranted, UnityAction<string> onDenied)
    {
        bool hasExecuteOnDenied = false;
        List<string> permissionsNeedRequest = new List<string>();
        foreach (var permission in permissions)
            if (!Permission.HasUserAuthorizedPermission(permission)) permissionsNeedRequest.Add(permission);
        if (permissionsNeedRequest.Count > 0)
        {
            var requestCallback = new PermissionCallbacks();
            requestCallback.PermissionGranted += (permission) =>
            {
                Debug.Log("用户同意" + permission);
                permissionsNeedRequest.Remove(permission);
                if (permissionsNeedRequest.Count == 0) onAllGranted?.Invoke();
            };
            requestCallback.PermissionDenied += (permission) =>
            {
                Debug.LogWarning("用户拒绝" + permission);
                if (!hasExecuteOnDenied)
                {
                    hasExecuteOnDenied = true;
                    onDenied?.Invoke(permission);
                }
            };
            requestCallback.PermissionDeniedAndDontAskAgain += (permission) =>
            {
                Debug.LogWarning("用户拒绝且要求不再询问" + permission);
                if (!hasExecuteOnDenied)
                {
                    hasExecuteOnDenied = true;
                    onDenied?.Invoke(permission);
                }
            };
            Permission.RequestUserPermissions(permissionsNeedRequest.ToArray(), requestCallback);
        }
        else onAllGranted?.Invoke();
    }
}