iOS10適配 完美解決相機、相簿等許可權的使用

解決相機相簿呼叫奔潰：

崩潰：[access] This app has crashed because it attempted to access
privacy-sensitive data without a usage description. The app’s
Info.plist must contain an NSPhotoLibraryUsageDescription key with a
string value explaining to the user how the app uses this data.

ios 10 中許可權適配
升級到iOS10之後，需要設定許可權的有：

<!-- 相簿 -->   
<key>NSPhotoLibraryUsageDescription</key>   
<string>App需要您的同意,才能訪問相簿</string>   
<!-- 相機 -->   
<key>NSCameraUsageDescription</key>   
<string>App需要您的同意,才能訪問相機</string>   
<!-- 麥克風 -->   
<key>NSMicrophoneUsageDescription</key>   
<string>App需要您的同意,才能訪問麥克風</string>   
<!-- 位置 -->   
<key>NSLocationUsageDescription</key>   
<string>App需要您的同意,才能訪問位置</string>   
<!-- 在使用期間訪問位置 -->   
<key>NSLocationWhenInUseUsageDescription</key>   
<string>App需要您的同意,才能在使用期間訪問位置</string>   
<!-- 始終訪問位置 -->   
<key>NSLocationAlwaysUsageDescription</key>   
<string>App需要您的同意,才能始終訪問位置</string>   
<!-- 日曆 -->   
<key>NSCalendarsUsageDescription</key>   
<string>App需要您的同意,才能訪問日曆</string>   
<!-- 提醒事項 -->   
<key>NSRemindersUsageDescription</key>   
<string>App需要您的同意,才能訪問提醒事項</string>   
<!-- 運動與健身 -->   
<key>NSMotionUsageDescription</key> <string>App需要您的同意,才能訪問運動與健身</string>   
<!-- 健康更新 -->   
<key>NSHealthUpdateUsageDescription</key>   
<string>App需要您的同意,才能訪問健康更新 </string>   
<!-- 健康分享 -->   
<key>NSHealthShareUsageDescription</key>   
<string>App需要您的同意,才能訪問健康分享</string>   
<!-- 藍芽 -->   
<key>NSBluetoothPeripheralUsageDescription</key>   
<string>App需要您的同意,才能訪問藍芽</string>   
<!-- 媒體資料庫 -->   
<key>NSAppleMusicUsageDescription</key> 
 <string>App需要您的同意,才能訪問媒體資料庫</string>  

info.plist中根據自己的需求複製新增

在使用時 .m 中新增

//相機
#import <AVFoundation/AVCaptureDevice.h>
#import <AVFoundation/AVMediaFormat.h>
//相簿
#import <AssetsLibrary/AssetsLibrary.h>

程式碼示例：
switch (buttonIndex) {
        case 1:
        {
            //相機許可權
            AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
            if (authStatus ==AVAuthorizationStatusRestricted ||//此應用程式沒有被授權訪問的照片資料。

                authStatus ==AVAuthorizationStatusDenied)  //使用者已經明確否認了這一照片資料的應用程式訪問
            {
                // 無許可權 引導去開啟
                NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
                if ([[UIApplication sharedApplication]canOpenURL:url]) {
                    [[UIApplication sharedApplication]openURL:url];
                }
            }else{
                if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
                    [self loadImage:UIImagePickerControllerSourceTypeCamera];
                }
                else
                {
                    NSLog(@"手機不支援相機");
                }
            }
                    }
            break;
        case 2:
        {
            //相簿許可權
            ALAuthorizationStatus author = [ALAssetsLibrary authorizationStatus];
            if (author ==ALAuthorizationStatusRestricted || author ==ALAuthorizationStatusDenied){
                //無許可權 引導去開啟
                NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
                if ([[UIApplication sharedApplication] canOpenURL:url]) {
                    [[UIApplication sharedApplication] openURL:url];
                }
            }else{
                if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {
                    [self loadImage:UIImagePickerControllerSourceTypePhotoLibrary];
                }
                else
                {
                    NSLog(@"手機不支援相簿");
                }
            }


        }
            break;

        default:
            break;
    }