實用小技巧（二十六）—— APP中各種權限監測和申請工具封裝

版本記錄

版本號 時間
V1.0 2017.11.01

前言

在app中，很多時候都需要熟悉一些小技巧讓您事半功倍，提高工作效率，這些小技巧都很小很細。感興趣的可以看看我寫的其他小技巧。
1. 實用小技巧（一）：UIScrollView中上下左右滾動方向的判斷
2. 實用小技巧（二）：屏幕橫豎屏的判斷和相關邏輯
3.實用小技巧（三）：點擊手勢屏蔽子視圖的響應
4.實用小技巧（四）：動態的增刪標簽視圖
5.實用小技巧（五）：通過相冊或者相機更改圖標
6.實用小技巧（六）：打印ios里所有字體
7. 實用小技巧（七）：UITableViewCell自適應行高的計算
8. 實用小技巧（八）：數字余額顯示的分隔
9.實用小技巧（九）：類頭條模糊背景的實現
10.實用小技巧（十）：晃動手機換后臺服務器網絡
11.實用小技巧（十一）：scrollView及其子類顯示的一些異常處理
12.實用小技巧（十二）：頭像圖片縮放以及保存到相冊簡單功能的實現
13.實用小技巧（十三）：一種類酷我音樂盒動畫實現
14.實用小技巧（十四）：生成跳往applestore指定app的方法
15.實用小技巧（十五）：左側向右滑動返回上一級控制器
16.實用小技巧（十六）：獲取設備信息
17.實用小技巧（十七）：清除緩存目錄
18.實用小技巧（十八）：取出gif圖的每一幀
19.實用小技巧（十九）：獲取相機和麥克風權限
20.實用小技巧（二十）：游客模式的實現
21.實用小技巧（二十一）：版本檢測的實現
22.實用小技巧（二十二）：鍵盤遮擋問題
23. 實用小技巧（二十三）：獲取閃光燈的控制
24. 實用小技巧（二十四）：APP頁面開啟跳轉邏輯處理
25. 實用小技巧（二十五）—— 關于UILabel控件寬高的計算

權限監測請求工具的封裝

下面我們封裝一下權限監測和請求工具，直接看代碼吧。

1. JJAuthorityManager.h

#import <Foundation/Foundation.h>

typedef NS_ENUM(NSUInteger, JJAuthorizationType) {
    JJAuthorizationTypeNotDetermined,       //未決定
    JJAuthorizationTypeDenied,              //拒絕
    JJAuthorizationTypeAllow                //允許
};

/**
     權限獲取及請求
 */

@interface JJAuthorityManager : NSObject

/**
 檢查權限
 */

//檢查網絡權限
+ (JJAuthorizationType)jj_checkNetworkAuthorization;

//檢查相機權限
+ (JJAuthorizationType)jj_checkCameraAuthorization;

//檢查相冊權限
+ (JJAuthorizationType)jj_checkAlbumAuthorization;

//檢查麥克風權限
+ (JJAuthorizationType)jj_checkMicrophoneAuthorization;

//檢查定位權限
+ (JJAuthorizationType)jj_checkLocationAuthorization;

//檢查通知權限
+ (void)jj_checkNotificationAuthorized:(void (^)(BOOL authorized))completion;


/**
 請求權限
 */

//打開設置授權視圖
+ (void)jj_openAuthorizationView;

//獲取相機權限
+ (void)jj_getCameraAuthorization:(void (^)(BOOL granted))completion;

//獲取相冊權限
+ (void)jj_getAlbumAuthorization:(void (^)(BOOL authorized))completion;

//獲取麥克風權限
+ (void)jj_getMicrophoneAuthorization:(void (^)(BOOL granted))completion;

//獲取通知權限
+ (void)jj_getNotificationAuthorization;

@end

2. JJAuthorityManager.m

#import "JJAuthorityManager.h"
#import <AssetsLibrary/AssetsLibrary.h>
#import <AVFoundation/AVFoundation.h>
#import <CoreLocation/CoreLocation.h>
#import <CoreTelephony/CTCellularData.h>
#import <Photos/Photos.h>
#import <UserNotifications/UserNotifications.h>


@implementation JJAuthorityManager

//檢查網絡權限

+ (JJAuthorizationType)jj_checkNetworkAuthorization
{
    CTCellularData *cellularData = [[CTCellularData alloc] init];
    CTCellularDataRestrictedState state = cellularData.restrictedState;
    if (state == kCTCellularDataRestricted) {
        return JJAuthorizationTypeDenied;
    }
    else if (state == kCTCellularDataNotRestricted) {
        return JJAuthorizationTypeAllow;
    }
    else if (state == kCTCellularDataRestrictedStateUnknown) {
        return JJAuthorizationTypeNotDetermined;
    }
    return JJAuthorizationTypeAllow;
}

//檢查相機權限

+ (JJAuthorizationType)jj_checkCameraAuthorization
{
    AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
    if(authStatus == ALAuthorizationStatusRestricted || authStatus == ALAuthorizationStatusDenied){
        return JJAuthorizationTypeDenied;
    }
    else if (authStatus == ALAuthorizationStatusNotDetermined) {
        return JJAuthorizationTypeNotDetermined;
    }
    return JJAuthorizationTypeAllow;
}

//檢查相冊權限

+ (JJAuthorizationType)jj_checkAlbumAuthorization
{
    PHAuthorizationStatus authStatus = [PHPhotoLibrary authorizationStatus];
    if (authStatus == PHAuthorizationStatusAuthorized) {
        return JJAuthorizationTypeAllow;
    }
    else if (authStatus == PHAuthorizationStatusDenied) {
        return JJAuthorizationTypeDenied;
    }
    else if (authStatus == PHAuthorizationStatusNotDetermined) {
        return JJAuthorizationTypeNotDetermined;
    }
    else if (authStatus == PHAuthorizationStatusRestricted) {
        return JJAuthorizationTypeDenied;
    }
    return JJAuthorizationTypeAllow;
}

//檢查麥克風權限

+ (JJAuthorizationType)jj_checkMicrophoneAuthorization
{
    AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeAudio];//麥克風權限
    if (authStatus == AVAuthorizationStatusAuthorized) {
        return JJAuthorizationTypeAllow;
    }
    else if (authStatus == AVAuthorizationStatusDenied) {
        return JJAuthorizationTypeDenied;
    }
    else if (authStatus == AVAuthorizationStatusNotDetermined) {
        return JJAuthorizationTypeNotDetermined;
    }
    else if (authStatus == AVAuthorizationStatusRestricted) {
        return JJAuthorizationTypeDenied;
    }
    return JJAuthorizationTypeAllow;
}

//檢查定位權限

+ (JJAuthorizationType)jj_checkLocationAuthorization
{
    CLAuthorizationStatus status = [CLLocationManager authorizationStatus];
    if (kCLAuthorizationStatusDenied == status || kCLAuthorizationStatusRestricted == status) {
        return JJAuthorizationTypeDenied;
    } else if (kCLAuthorizationStatusNotDetermined == status) {
        return JJAuthorizationTypeNotDetermined;
    }
    return JJAuthorizationTypeAllow;
}

//檢查通知權限

+ (void)jj_checkNotificationAuthorized:(void (^)(BOOL authorized))completion
{
    if (!completion) {
        return;
    }
    
    if ([UIDevice currentDevice].systemVersion.floatValue >= 10.0) {
        [[UNUserNotificationCenter currentNotificationCenter]
         getNotificationSettingsWithCompletionHandler:
         ^(UNNotificationSettings * _Nonnull settings) {
             completion(settings.authorizationStatus == UNAuthorizationStatusAuthorized);
         }];
    }
    else {
        completion([UIApplication sharedApplication].currentUserNotificationSettings.types != UIUserNotificationTypeNone);
    }
}

//打開設置授權視圖

+ (void)jj_openAuthorizationView
{
    NSURL *settingURL = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
    if ([[UIApplication sharedApplication] canOpenURL:settingURL]) {
        [[UIApplication sharedApplication] openURL:settingURL];
    }
}

//獲取相機權限

+ (void)jj_getCameraAuthorization:(void (^)(BOOL granted))completion
{
    [AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) {
        if (granted){
            NSLog(@"用戶同意授權相機");
        }
        else {
            NSLog(@"用戶拒絕授權相機");
        }
        if (completion) {
            completion(granted);
        }
    }];
}

//獲取相冊權限

+ (void)jj_getAlbumAuthorization:(void (^)(BOOL authorized))completion {
    [PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status) {
        if (status == PHAuthorizationStatusAuthorized) {
            NSLog(@"用戶同意授權相冊");
        }
        else {
            NSLog(@"用戶拒絕授權相冊");
        }
        if (completion) {
            completion(status == PHAuthorizationStatusAuthorized);
        }
    }];
}

// 獲取麥克風權限

+ (void)jj_getMicrophoneAuthorization:(void (^)(BOOL granted))completion
{
    [[AVAudioSession sharedInstance] requestRecordPermission:^(BOOL granted) {
        if (granted) {
            NSLog(@"用戶同意授權麥克風");
        }
        else{
            NSLog(@"用戶拒絕授權麥克風");
        }
        if (completion) {
            completion(granted);
        }
    }];
}

//獲取通知權限

+ (void)jj_getNotificationAuthorization
{
    if ([UIDevice currentDevice].systemVersion.floatValue >= 10.0) {
        UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
        [center requestAuthorizationWithOptions:(UNAuthorizationOptionBadge | UNAuthorizationOptionSound | UNAuthorizationOptionAlert) completionHandler:^(BOOL granted, NSError * _Nullable error) {
            if (!error) {
                NSLog(@"request authorization succeeded!");
            }
        }];
        [center getNotificationSettingsWithCompletionHandler:^(UNNotificationSettings * _Nonnull settings) {
            NSLog(@"%@",settings);
        }];
        [[UIApplication sharedApplication] registerForRemoteNotifications];
    }
    else if ([UIDevice currentDevice].systemVersion.floatValue >= 8.0) {
        [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]];
        [[UIApplication sharedApplication] registerForRemoteNotifications];
    }
}

@end

工具的使用

下面我們就看一下該工具的使用情況，看一下測試代碼。

1. ViewController.m

#import "ViewController.h"
#import "JJAuthorityManager.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    self.view.backgroundColor = [UIColor yellowColor];
    
    //檢查請求通知權限
    [JJAuthorityManager jj_checkNotificationAuthorized:^(BOOL authorized) {
        if (authorized) {
            NSLog(@"已經授權了");
        }
        else {
            [JJAuthorityManager jj_getNotificationAuthorization];
        }
    }];
    
    sleep(3);
    
    //檢查相冊權限
    JJAuthorizationType type = [JJAuthorityManager jj_checkAlbumAuthorization];
    
    if (type == JJAuthorizationTypeAllow) {
        NSLog(@"相冊已經授權");
    }
    else{
        [JJAuthorityManager jj_getAlbumAuthorization:^(BOOL authorized) {
            if (authorized) {
                NSLog(@"相冊獲取授權成功");
            }
            else{
                NSLog(@"相冊獲取授權失敗");
            }
        }];
    }
}

@end

下面我們看一下效果圖。

可見都是先獲取權限，沒有請求權限彈出的這個彈窗，這里請求相冊權限別忘記配置plist權限啊，否則會崩潰的。具體代碼可以見刀客傳奇 - Github

后記

未完，待續~~~

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