优化UIAlertController的dismiss

TZImagePickerController/TZImagePickerController/TZImagePickerController.h

@@ -196,7 +196,6 @@
 
 #pragma mark -
 - (UIAlertController *)showAlertWithTitle:(NSString *)title;
-- (void)hideAlertView:(UIAlertController *)alertView;
 - (void)showProgressHUD;
 - (void)hideProgressHUD;
 @property (nonatomic, assign) BOOL isSelectOriginalPhoto;

TZImagePickerController/TZImagePickerController/TZImagePickerController.m

@@ -419,11 +419,6 @@
     return alertController;
 }
 
-- (void)hideAlertView:(UIAlertController *)alertView {
-    [alertView dismissViewControllerAnimated:YES completion:nil];
-    alertView = nil;
-}
-
 - (void)showProgressHUD {
     if (!_progressHUD) {
         _progressHUD = [UIButton buttonWithType:UIButtonTypeCustom];

TZImagePickerController/TZImagePickerController/TZPhotoPickerController.m

@@ -472,8 +472,10 @@ static CGFloat itemMargin = 5;
                 for (id item in photos) { if ([item isKindOfClass:[NSNumber class]]) return; }
                 
                 if (havenotShowAlert) {
-                    [tzImagePickerVc hideAlertView:alertView];
+                    [alertView dismissViewControllerAnimated:YES completion:^{
+                        alertView = nil;
                         [self didGetAllPhotos:photos assets:assets infoArr:infoArr];
+                    }];
                 }
             } progressHandler:^(double progress, NSError * _Nonnull error, BOOL * _Nonnull stop, NSDictionary * _Nonnull info) {
                 // 如果图片正在从iCloud同步中,提醒用户

TZImagePickerController/TZImagePickerController/TZPhotoPreviewController.m

@@ -484,21 +484,20 @@
         photoPreviewCell.cropRect = _tzImagePickerVc.cropRect;
         photoPreviewCell.allowCrop = _tzImagePickerVc.allowCrop;
         photoPreviewCell.scaleAspectFillCrop = _tzImagePickerVc.scaleAspectFillCrop;
-        __weak typeof(_tzImagePickerVc) weakTzImagePickerVc = _tzImagePickerVc;
         __weak typeof(_collectionView) weakCollectionView = _collectionView;
         __weak typeof(photoPreviewCell) weakCell = photoPreviewCell;
         [photoPreviewCell setImageProgressUpdateBlock:^(double progress) {
             __strong typeof(weakSelf) strongSelf = weakSelf;
-            __strong typeof(weakTzImagePickerVc) strongTzImagePickerVc = weakTzImagePickerVc;
             __strong typeof(weakCollectionView) strongCollectionView = weakCollectionView;
             __strong typeof(weakCell) strongCell = weakCell;
             strongSelf.progress = progress;
             if (progress >= 1) {
                 if (strongSelf.isSelectOriginalPhoto) [strongSelf showPhotoBytes];
                 if (strongSelf.alertView && [strongCollectionView.visibleCells containsObject:strongCell]) {
-                    [strongTzImagePickerVc hideAlertView:strongSelf.alertView];
+                    [strongSelf.alertView dismissViewControllerAnimated:YES completion:^{
                         strongSelf.alertView = nil;
                         [strongSelf doneButtonClick];
+                    }];
                 }
             }
         }];