修复预览页的一个小bug

TZImagePickerController.podspec

 Pod::Spec.new do |s|
   s.name         = "TZImagePickerController"
-  s.version      = "1.6.3"
+  s.version      = "1.6.4"
   s.summary      = "A clone of UIImagePickerController, support picking multiple photos、original photo and video"
   s.homepage     = "https://github.com/banchichen/TZImagePickerController"
   s.license      = "MIT"
   s.author       = { "banchichen" => "tanzhenios@foxmail.com" }
   s.platform     = :ios
   s.ios.deployment_target = "6.0"
-  s.source       = { :git => "https://github.com/banchichen/TZImagePickerController.git", :tag => "1.6.3" }
+  s.source       = { :git => "https://github.com/banchichen/TZImagePickerController.git", :tag => "1.6.4" }
   s.requires_arc = true
   s.resources    = "TZImagePickerController/TZImagePickerController/*.{png,xib,nib,bundle}"
   s.source_files = "TZImagePickerController/TZImagePickerController/*.{h,m}"

TZImagePickerController/ViewController.m

@@ -149,6 +149,7 @@
             [self presentViewController:vc animated:YES completion:nil];
         } else { // preview photos / 预览照片
             TZImagePickerController *imagePickerVc = [[TZImagePickerController alloc] initWithSelectedAssets:_selectedAssets selectedPhotos:_selectedPhotos index:indexPath.row];
+            imagePickerVc.maxImagesCount = self.maxCountTF.text.integerValue;
             imagePickerVc.allowPickingOriginalPhoto = self.allowPickingOriginalPhotoSwitch.isOn;
             imagePickerVc.isSelectOriginalPhoto = _isSelectOriginalPhoto;
             [imagePickerVc setDidFinishPickingPhotosHandle:^(NSArray<UIImage *> *photos, NSArray *assets, BOOL isSelectOriginalPhoto) {
@@ -193,6 +194,7 @@
         return;
     }
     TZImagePickerController *imagePickerVc = [[TZImagePickerController alloc] initWithMaxImagesCount:self.maxCountTF.text.integerValue columnNumber:self.columnNumberTF.text.integerValue delegate:self];
+    
 
 #pragma mark - 四类个性化设置，这些参数都可以不传，此时会走默认设置
     imagePickerVc.isSelectOriginalPhoto = _isSelectOriginalPhoto;