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react-native-image-resizer
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Load and resize assets on iOS with proper orientation

This commit is contained in:
Florian Rival 2015-12-06 18:04:53 +01:00
parent e9b1dec7b0
commit 7d19fab226
1 changed files with 12 additions and 3 deletions
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15
RNImageResizer/ImageResizerModule.m
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@ -45,9 +45,18 @@ RCT_EXPORT_METHOD(createResizedImage:(NSString *)path width:(float)width height:
// Ask for the "Asset" for the URL. An asset is a representation of an image in the Photo application.
[library assetForURL:url resultBlock:^(ALAsset *asset) {
// Here, we have the asset, let's retrieve the image from it
CGImageRef imgRef = [[asset defaultRepresentation] fullResolutionImage];
UIImage * image = [UIImage imageWithCGImage:imgRef];
ALAssetRepresentation* representation = [asset defaultRepresentation];
// Retrieve the image orientation from the ALAsset
UIImageOrientation orientation = UIImageOrientationUp;
NSNumber* orientationValue = [asset valueForProperty:@"ALAssetPropertyOrientation"];
if (orientationValue != nil) {
orientation = [orientationValue intValue];
}
CGFloat scale = 1;
UIImage* image = [UIImage imageWithCGImage:[representation fullResolutionImage]
scale:scale orientation:orientation];
//Do the resizing
UIImage * scaledImage = [image scaleToSize:newSize];