IOS RCTScrollView x RCTScrollViewComponentView error patch-fix.

[Hasan-Jafri]

Hi! 👋

Firstly, thanks for your work on this project! 🙂

Today I used patch-package to patch react-native-view-shot@4.0.3 for the project I'm working on.

Basically, this is a patch only for IOS where RCTScrollView is required for long screenCapture when snapshotContentContainer is true, it checks for this component and when it does not find it, raises an error "snapshotContentContainer can only be used on a RCTScrollView. instead got something something.......".

Now this is a temporary fix :), if you want to keep long screenshots on IOS without any issue, I will not recommend it until and unless there is no other option :). I created this because I think it should be known, I don't know if its good or bad, but for time being this works OK.

You can try and use the patch.

Here is the diff that solved my problem:

diff --git a/node_modules/react-native-view-shot/ios/RNViewShot.mm b/node_modules/react-native-view-shot/ios/RNViewShot.mm
index 2cf632f..b53897b 100644
--- a/node_modules/react-native-view-shot/ios/RNViewShot.mm
+++ b/node_modules/react-native-view-shot/ios/RNViewShot.mm
@@ -4,7 +4,7 @@
 #import <React/UIView+React.h>
 #import <React/RCTUtils.h>
 #import <React/RCTConvert.h>
-#import <React/RCTScrollView.h>
+#import <React/RCTScrollViewComponentView.h>
 #import <React/RCTUIManager.h>
 #if __has_include(<React/RCTUIManagerUtils.h>)
 #import <React/RCTUIManagerUtils.h>
@@ -80,12 +80,12 @@ - (dispatch_queue_t)methodQueue
     UIView* rendered;
     UIScrollView* scrollView;
     if (snapshotContentContainer) {
-      if (![view isKindOfClass:[RCTScrollView class]]) {
-        reject(RCTErrorUnspecified, [NSString stringWithFormat:@"snapshotContentContainer can only be used on a RCTScrollView. instead got: %@", view], nil);
-        return;
-      }
-      RCTScrollView* rctScrollView = view;
-      scrollView = rctScrollView.scrollView;
+      // if (![view isKindOfClass:[RCTScrollViewComponentView class]]) {
+      //   reject(RCTErrorUnspecified, [NSString stringWithFormat:@"snapshotContentContainer can only be used on a RCTScrollView. instead got: %@", view], nil);
+      //   return;
+      // }
+      RCTScrollViewComponentView* RCTScrollViewComponentView = view;
+      scrollView = RCTScrollViewComponentView.scrollView;
       rendered = scrollView;
     }
     else {

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