一揭蜒、獲取權(quán)限

1.1、獲取相冊(cè)權(quán)限(是否是首次獲取)

需要在info.plist增加相冊(cè)隱私權(quán)限：NSPhotoLibraryUsageDescription

    /// 檢查相冊(cè)存取權(quán)限,如有必要?jiǎng)t向系統(tǒng)申請(qǐng)
    /// iOS14之后使用之前的獲取狀態(tài)請(qǐng)求(limited和authorized都會(huì)返回authorized)
    /// status：用戶設(shè)置的權(quán)限
    /// firstDetermined：是否是首次設(shè)置權(quán)限
  class func checkAuthorizationStatus(_ handler: @escaping (_ status: PHAuthorizationStatus,_ firstDetermined: Bool) -> Void) {

        var authorizationStatus = PHPhotoLibrary.authorizationStatus()
        if #available(iOS 14, *) {
            authorizationStatus = PHPhotoLibrary.authorizationStatus(for: .readWrite)
        }
        if authorizationStatus == .notDetermined {
            if #available(iOS 14, *) {
                PHPhotoLibrary.requestAuthorization(for: .readWrite) { (status) in
                    handler(status, true)
                }
            } else {
                PHPhotoLibrary.requestAuthorization { (status) in
                    handler(status, true)
                }
            }
            
        } else {
            handler(authorizationStatus, false)
        }
    }

1.2剔桨、獲取相機(jī)權(quán)限

需要在info.plist增加相機(jī)隱私權(quán)限：NSCameraUsageDescription

 func requestCamera() {
        AVCaptureDevice.requestAccess(for: .video) { (cameraGranted) in
            if cameraGranted {
                print("允許APP訪問(wèn)相機(jī)")
            } else {
                print("拒絕APP訪問(wèn)相機(jī)")
            }
        }
    }

1.3屉更、獲取麥克風(fēng)權(quán)限

需要在info.plist增加麥克風(fēng)隱私權(quán)限：NSMicrophoneUsageDescription

 func requestAudio(cameraAllowed: Bool) {
        AVCaptureDevice.requestAccess(for: .audio) { (audioGranted) in
            if audioGranted {
                print("允許APP訪問(wèn)麥克風(fēng)")
            } else {
                print("拒絕APP訪問(wèn)麥克風(fēng)")
            }
        }
    }

二、資源類型相關(guān)API

2.1洒缀、判斷資源是否是iCloud

/*
     判斷是否是iCloud照片
     asset：資源對(duì)象
     reseult: true為本地資源瑰谜，false為iCloud資源
     */
     @objc open class func judgeAssetis(inLocalAblum asset: PHAsset?) -> Bool {
        var result = false
        
        if let pAsset = asset {
            if #available(iOS 10.0, *) {
                let resourceArray = PHAssetResource.assetResources(for: pAsset)
                if resourceArray.count > 0 {
                    if let iCloud: Bool = resourceArray.first?.value(forKey: "locallyAvailable") as? Bool, iCloud == true {
                        return true
                    }
                }
            }
            
            let option = PHImageRequestOptions()
            /// 不允許網(wǎng)絡(luò)請(qǐng)求(iCloud資源獲取失敗)
            option.isNetworkAccessAllowed = false
            /// 設(shè)置為同步請(qǐng)求
            option.isSynchronous = true
            if let asset = asset {
                PHCachingImageManager.default().requestImageData(for: asset, options: option, resultHandler: { imageData, _, _, _ in
                    result = imageData != nil ? true : false
                })
            }
            return result
        }
        return true
    }

2.2、照片下載

// 下載照片原圖
    @objc open class func requestImageData(for asset: PHAsset, options: PHImageRequestOptions?, resultHandler: @escaping (Data?, String?, UIImage.Orientation, [AnyHashable: Any]?) -> Void, progressHandler:@escaping (Double) -> Void) -> PHImageRequestID {
        // Prepare the options to pass when fetching the (photo, or video preview) image.
        var requestOptions = options
        if requestOptions == nil {
            requestOptions = PHImageRequestOptions()
            /// 照片質(zhì)量
            requestOptions?.deliveryMode = .highQualityFormat
            /// 是否允許網(wǎng)絡(luò)下載
            requestOptions?.isNetworkAccessAllowed = true
        }
        
        let progressHandler: PHAssetVideoProgressHandler = { (progress, error, stop, info) in
            if let b = info?[PHImageCancelledKey] as? NSNumber, b.boolValue {
                return
            }
            if error != nil {
                return
            }
            progressHandler(progress)
        }
        requestOptions?.progressHandler = progressHandler
        return PHImageManager.default().requestImageData(for: asset, options: requestOptions, resultHandler: resultHandler)
    }

2.3帝洪、視頻下載

/// 獲取視頻資源
    /// - asset: 資源元數(shù)據(jù)
    /// - options: 下載參數(shù)
    /// - resultHandler: 返回結(jié)果
    /// - progressHandler: 下載進(jìn)度
    open class func requestAVAssetAsset(forVideo asset: PHAsset, options: PHVideoRequestOptions?, resultHandler: @escaping (AVAsset?, AVAudioMix?, [AnyHashable: Any]?) -> Void, progressHandler:@escaping (Double) -> Void) -> PHImageRequestID {
        var requestOptions = options
        if requestOptions == nil {
            requestOptions = PHVideoRequestOptions()
            requestOptions?.deliveryMode = .automatic
            requestOptions?.isNetworkAccessAllowed = true
            
        }
        
        let progressHandler: PHAssetVideoProgressHandler = { (progress, error, stop, info) in
            if error != nil {
                return
            }
            progressHandler(progress)
        }
        requestOptions?.progressHandler = progressHandler
        return PHImageManager.default().requestAVAsset(forVideo: asset, options: requestOptions, resultHandler: resultHandler)
    }

相冊(cè)相關(guān)的內(nèi)容后續(xù)持續(xù)更新(相簿似舵、照片集、iCloud資源下載進(jìn)度等等)葱峡，如果大家有什么疑問(wèn)和建議歡迎一起談?wù)摗?/p>