Summary:
this is a recent regression because the error appeared in my app (from 0.16 to 0.17).
```
<Image source={{ uri: null }} />
```
will make an error:
```
[RCTConvert.m:55] Error setting property 'source' of RCTImageView with tag #317: JSON value '<null>' of type NSNull cannot be converted to NSString
```
The solution attached is to check that uri is a NSString and return nil if not (the same way nil is returned in case of invalid url).
Closes https://github.com/facebook/react-native/pull/4902
Reviewed By: svcscm
Differential Revision: D2779789
Pulled By: nicklockwood
fb-gh-sync-id: cfe429ec5e53e63b7b368c06e693424ca8aaa11e
Summary:
public
The +[RCTConvert UIImage:] function, while convenient, is inherently limited by being synchronous, which means that it cannot be used to load remote images, and may not be efficient for local images either. It's also unable to access the bridge, which means that it cannot take advantage of the modular image-loading pipeline.
This diff introduces a new RCTImageSource class which can be used to pass image source objects over the bridge and defer loading until later.
I've also added automatic application of the `resolveAssetSource()` function based on prop type, and fixed up the image logic in NavigatorIOS and TabBarIOS.
Reviewed By: javache
Differential Revision: D2631541
fb-gh-sync-id: 6604635e8bb5394425102487f1ee7cd729321877
Gaëtan Renaudeau
Nick Lockwood