视频单选模式下，已经选择了照片后，视频置灰

TZImagePickerController/TZImagePickerController/TZAssetCell.m

@@ -236,7 +236,8 @@
         self.index = [tzImagePickerVc.selectedAssetIds indexOfObject:self.model.asset.localIdentifier] + 1;
     }
     self.indexLabel.hidden = !self.selectPhotoButton.isSelected;
-    if (tzImagePickerVc.selectedModels.count >= tzImagePickerVc.maxImagesCount && tzImagePickerVc.showPhotoCannotSelectLayer && !self.model.isSelected) {
+    BOOL notSelectable = [TZCommonTools isAssetNotSelectable:self.model tzImagePickerVc:tzImagePickerVc];
+    if (notSelectable && tzImagePickerVc.showPhotoCannotSelectLayer && !self.model.isSelected) {
         self.cannotSelectLayerButton.backgroundColor = tzImagePickerVc.cannotSelectLayerColor;
         self.cannotSelectLayerButton.hidden = NO;
     } else {

TZImagePickerController/TZImagePickerController/TZImagePickerController.h

@@ -360,6 +360,7 @@
 + (BOOL)tz_isRightToLeftLayout;
 + (void)configBarButtonItem:(UIBarButtonItem *)item tzImagePickerVc:(TZImagePickerController *)tzImagePickerVc;
 + (BOOL)isICloudSyncError:(NSError *)error;
++ (BOOL)isAssetNotSelectable:(TZAssetModel *)model tzImagePickerVc:(TZImagePickerController *)tzImagePickerVc;
 @end
 
 

TZImagePickerController/TZImagePickerController/TZImagePickerController.m

@@ -1021,6 +1021,16 @@
     return NO;
 }
 
++ (BOOL)isAssetNotSelectable:(TZAssetModel *)model tzImagePickerVc:(TZImagePickerController *)tzImagePickerVc {
+    BOOL notSelectable = tzImagePickerVc.selectedModels.count >= tzImagePickerVc.maxImagesCount;
+    if (tzImagePickerVc.selectedModels && tzImagePickerVc.selectedModels.count > 0 && !tzImagePickerVc.allowPickingMultipleVideo) {
+        if (model.asset.mediaType == PHAssetMediaTypeVideo) {
+            notSelectable = true;
+        }
+    }
+    return notSelectable;
+}
+
 @end
 
 

TZImagePickerController/TZImagePickerController/TZPhotoPickerController.m

@@ -593,7 +593,8 @@ static CGFloat itemMargin = 5;
     cell.showSelectBtn = tzImagePickerVc.showSelectBtn;
     cell.allowPreview = tzImagePickerVc.allowPreview;
     
-    if (tzImagePickerVc.selectedModels.count >= tzImagePickerVc.maxImagesCount && tzImagePickerVc.showPhotoCannotSelectLayer && !model.isSelected) {
+    BOOL notSelectable = [TZCommonTools isAssetNotSelectable:model tzImagePickerVc:tzImagePickerVc];
+    if (notSelectable && tzImagePickerVc.showPhotoCannotSelectLayer && !model.isSelected) {
         cell.cannotSelectLayerButton.backgroundColor = tzImagePickerVc.cannotSelectLayerColor;
         cell.cannotSelectLayerButton.hidden = NO;
     } else {