.h 文件

#import <Foundation/Foundation.h>

@interface AuthManager : NSObject

/**
 检测麦克风是否授权

 @param callBack 是否授权（如果未授权会有弹出框提示是否去设置，如果不去设置返回否）
 */
+ (void)checkMicphoneAuthCallBack:(void(^)(BOOL flag))callBack;

/**
 检测相机是否授权
 
 @param callBack 是否授权（如果未授权会有弹出框提示是否去设置，如果不去设置返回否）
 */
+ (void)checkCameraAuthCallBack:(void(^)(BOOL flag))callBack;

@end

.m文件

#import "AuthManager.h"
#import <AVFoundation/AVFoundation.h>
#import <UIKit/UIKit.h>

@implementation AuthManager

+ (void)checkCameraAuthCallBack:(void (^)(BOOL))callBack{
    [AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) {

        if (!granted) {
            NSLog(@"camera未授权");
            NSString *str = @"相机未授权，是否进行授权操作？";
            [self showAlert:str CallBack:^(BOOL cancel) {
                callBack(cancel);
            }];
        }else{
            NSLog(@"camera已授权");
            callBack(granted);
        }
    }];
}

+ (void)checkMicphoneAuthCallBack:(void (^)(BOOL))callBack {
    [AVCaptureDevice requestAccessForMediaType:AVMediaTypeAudio completionHandler:^(BOOL granted) {
        if (!granted) {
            NSLog(@"mic未授权");
            NSString *str = @"麦克风未授权，是否进行授权操作？";
            [self showAlert:str CallBack:^(BOOL cancel) {
                callBack(cancel);
            }];
        }else{
            NSLog(@"mic已授权");
            callBack(granted);
        }
    }];
}

/**
 alert提示
 */
+ (void)showAlert:(NSString *)message CallBack:(void (^)(BOOL))callBack {
    UIAlertController *alertvc = [UIAlertController alertControllerWithTitle:@"温馨提示"
                                                                     message:message
                                                              preferredStyle:UIAlertControllerStyleAlert];
    UIAlertAction *cancel = [UIAlertAction actionWithTitle:@"否" style:UIAlertActionStyleDefault
                                                   handler:^(UIAlertAction * _Nonnull action) {
        callBack(NO);
    }];
    UIAlertAction *setting = [UIAlertAction actionWithTitle:@"是" style:UIAlertActionStyleDefault
                                                    handler:^(UIAlertAction * _Nonnull action) {
        [self gotoSetting];
    }];
    [alertvc addAction:cancel];
    [alertvc addAction:setting];
    [TOPCONTROLLER presentViewController:alertvc animated:YES completion:nil];
}

/**
 跳转到设置页面
 */
+ (void)gotoSetting {
    if([[UIApplication sharedApplication]
        canOpenURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]]) {
        [[UIApplication sharedApplication]
         openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
    };
}

@end