float deviceIOSVersion = [[UIDevice currentDevice].systemVersion floatValue];

        if (deviceIOSVersion >= 7.0) {

            if (type == UIImagePickerControllerSourceTypeCamera) {

                //相机权限

                AVAuthorizationStatus cameraStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];

                if (cameraStatus == AVAuthorizationStatusDenied || cameraStatus == AVAuthorizationStatusRestricted) {

                    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"相机权限未开，请到设置中开启" delegate:nil cancelButtonTitle:@"Close" otherButtonTitles:nil];

                    [alert show];

                    return;

                }

            }else{

                //相册权限

                ALAuthorizationStatus libraryStatus = [ALAssetsLibrary authorizationStatus];

                if (libraryStatus == ALAuthorizationStatusDenied || libraryStatus == ALAuthorizationStatusRestricted) {

                    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"相册权限未开，请到设置中开启" delegate:nil cancelButtonTitle:@"Close" otherButtonTitles:nil];

                    [alert show];

                    return;

                }

            }

        }