原文链接我在这，【iOS开发笔记】系统权限的获取和请求 - 简书

 TenBluetoothManager.m

#import "TenBluetoothManager.h"

@interface TenBluetoothManager () <CBCentralManagerDelegate>
/**蓝牙管理类*/
@property (nonatomic, strong) CBCentralManager *cbCentralManager;
/**请求蓝牙权限回调*/
@property (nonatomic, copy) void (^bluetoothAuthBlock) (BOOL granted, CBPeripheralManagerAuthorizationStatus status);
@end



static TenBluetoothManager *_bluetoothManager;
@implementation TenBluetoothManager

#pragma mark - 构造
/**构造方法*/
+(instancetype)allocWithZone:(struct _NSZone *)zone {
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        if (_bluetoothManager == nil) {
            _bluetoothManager = [super allocWithZone:zone];
        }
    });
    return _bluetoothManager;
}

/**单例方法*/
+(instancetype)shareManager {
    return [[self alloc] init];
}

#pragma mark - public
-(void)ten_requestBluetoothRequest:(void (^)(BOOL, CBPeripheralManagerAuthorizationStatus))block {
    self.bluetoothAuthBlock = block;
    [self.cbCentralManager scanForPeripheralsWithServices:nil options:nil];
}

#pragma mark - CBCentralManagerDelegate
-(void)centralManagerDidUpdateState:(CBCentralManager *)central {
    if (self.bluetoothAuthBlock) {
        CBPeripheralManagerAuthorizationStatus authStatus = [CBPeripheralManager authorizationStatus];
        self.bluetoothAuthBlock(authStatus == CBPeripheralManagerAuthorizationStatusAuthorized, authStatus);
    }
}

#pragma mark - lazy
-(CBCentralManager *)cbCentralManager {
    if (!_cbCentralManager) {
        _cbCentralManager = [[CBCentralManager alloc] initWithDelegate:self queue:nil];
    }
    return _cbCentralManager;
}
@end

TenBluetoothManager.h 

#import <Foundation/Foundation.h>
#import <CoreBluetooth/CoreBluetooth.h>

@interface TenBluetoothManager : NSObject
/**单例方法*/
+(instancetype)shareManager;
/**
 唤起请求蓝牙权限
 @param block 结果回调
 */
-(void)ten_requestBluetoothRequest:(void (^) (BOOL granted, CBPeripheralManagerAuthorizationStatus status))block;
@end

 调用

UNI_EXPORT_METHOD(@selector(getBluetoothPermissions:))
- (void)getBluetoothPermissions:(void(^)(BOOL authorized))completion {
    [[TenBluetoothManager shareManager] ten_requestBluetoothRequest:^(BOOL granted, CBPeripheralManagerAuthorizationStatus status) {

    }];
}

然后

info.plist添加如下

Privacy - Bluetooth Always Usage Description
Privacy - Bluetooth Peripheral Usage Description

实测结果