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Replace ALAssets* with PHPhoto* in RCTCameraRoll

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Summary: Replaced all deprecated ALAssets* references to roughly equivalent PHPhoto* references in RCTCameraRoll library. There are still some minor inconsistencies between iOS/Android and documentation that existed prior to this diff that need to be resolved after this.

Reviewed By: fkgozali, PeteTheHeat

Differential Revision: D13513777

fbshipit-source-id: 3f0c4ae259823fae78eba875a6c259733715ab56
This commit is contained in:
Joshua Gross
2018-12-21 23:11:04 -08:00
committed by Facebook Github Bot
parent 34ea65e3d9
commit 8ce9b47626
6 changed files with 270 additions and 264 deletions
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147
Libraries/CameraRoll/RCTAssetsLibraryRequestHandler.m
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@@ -11,41 +11,26 @@
#import <dlfcn.h>
#import <objc/runtime.h>
#import <AssetsLibrary/AssetsLibrary.h>
#import <Photos/Photos.h>
#import <MobileCoreServices/MobileCoreServices.h>
#import <React/RCTBridge.h>
#import <React/RCTUtils.h>
@implementation RCTAssetsLibraryRequestHandler
{
ALAssetsLibrary *_assetsLibrary;
}
RCT_EXPORT_MODULE()
@synthesize bridge = _bridge;
static Class _ALAssetsLibrary = nil;
static void ensureAssetsLibLoaded(void)
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
void * handle = dlopen("/System/Library/Frameworks/AssetsLibrary.framework/AssetsLibrary", RTLD_LAZY);
#pragma unused(handle)
_ALAssetsLibrary = objc_getClass("ALAssetsLibrary");
});
}
- (ALAssetsLibrary *)assetsLibrary
{
ensureAssetsLibLoaded();
return _assetsLibrary ?: (_assetsLibrary = [_ALAssetsLibrary new]);
}
#pragma mark - RCTURLRequestHandler
- (BOOL)canHandleRequest:(NSURLRequest *)request
{
return [request.URL.scheme caseInsensitiveCompare:@"assets-library"] == NSOrderedSame;
if (![PHAsset class]) {
return NO;
}
return [request.URL.scheme caseInsensitiveCompare:@"assets-library"] == NSOrderedSame
|| [request.URL.scheme caseInsensitiveCompare:@"ph"] == NSOrderedSame;
}
- (id)sendRequest:(NSURLRequest *)request
@@ -55,58 +40,75 @@ static void ensureAssetsLibLoaded(void)
void (^cancellationBlock)(void) = ^{
atomic_store(&cancelled, YES);
};
if (!request.URL) {
NSString *const msg = [NSString stringWithFormat:@"Cannot send request without URL"];
[delegate URLRequest:cancellationBlock didCompleteWithError:RCTErrorWithMessage(msg)];
return cancellationBlock;
}
PHFetchResult<PHAsset *> *fetchResult;
if ([request.URL.scheme caseInsensitiveCompare:@"ph"] == NSOrderedSame) {
// Fetch assets using PHAsset localIdentifier (recommended)
NSString *const localIdentifier = [request.URL.absoluteString substringFromIndex:@"ph://".length];
fetchResult = [PHAsset fetchAssetsWithLocalIdentifiers:@[localIdentifier] options:nil];
} else if ([request.URL.scheme caseInsensitiveCompare:@"assets-library"] == NSOrderedSame) {
// This is the older, deprecated way of fetching assets from assets-library
// using the "assets-library://" protocol
fetchResult = [PHAsset fetchAssetsWithALAssetURLs:@[request.URL] options:nil];
} else {
NSString *const msg = [NSString stringWithFormat:@"Cannot send request with unknown protocol: %@", request.URL];
[delegate URLRequest:cancellationBlock didCompleteWithError:RCTErrorWithMessage(msg)];
return cancellationBlock;
}
if (![fetchResult firstObject]) {
NSString *errorMessage = [NSString stringWithFormat:@"Failed to load asset"
" at URL %@ with no error message.", request.URL];
NSError *error = RCTErrorWithMessage(errorMessage);
[delegate URLRequest:cancellationBlock didCompleteWithError:error];
return cancellationBlock;
}
if (atomic_load(&cancelled)) {
return cancellationBlock;
}
[[self assetsLibrary] assetForURL:request.URL resultBlock:^(ALAsset *asset) {
if (atomic_load(&cancelled)) {
return;
}
PHAsset *const _Nonnull asset = [fetchResult firstObject];
if (asset) {
ALAssetRepresentation *representation = [asset defaultRepresentation];
NSInteger length = (NSInteger)representation.size;
CFStringRef MIMEType = UTTypeCopyPreferredTagWithClass((__bridge CFStringRef _Nonnull)(representation.UTI), kUTTagClassMIMEType);
NSURLResponse *response =
[[NSURLResponse alloc] initWithURL:request.URL
MIMEType:(__bridge NSString *)(MIMEType)
expectedContentLength:length
textEncodingName:nil];
[delegate URLRequest:cancellationBlock didReceiveResponse:response];
NSError *error = nil;
uint8_t *buffer = (uint8_t *)malloc((size_t)length);
if ([representation getBytes:buffer
fromOffset:0
length:length
error:&error]) {
NSData *data = [[NSData alloc] initWithBytesNoCopy:buffer
length:length
freeWhenDone:YES];
[delegate URLRequest:cancellationBlock didReceiveData:data];
[delegate URLRequest:cancellationBlock didCompleteWithError:nil];
} else {
free(buffer);
[delegate URLRequest:cancellationBlock didCompleteWithError:error];
}
} else {
NSString *errorMessage = [NSString stringWithFormat:@"Failed to load asset"
" at URL %@ with no error message.", request.URL];
NSError *error = RCTErrorWithMessage(errorMessage);
// By default, allow downloading images from iCloud
PHImageRequestOptions *const requestOptions = [PHImageRequestOptions new];
requestOptions.networkAccessAllowed = YES;
[[PHImageManager defaultManager] requestImageDataForAsset:asset
options:requestOptions
resultHandler:^(NSData * _Nullable imageData,
NSString * _Nullable dataUTI,
UIImageOrientation orientation,
NSDictionary * _Nullable info) {
NSError *const error = [info objectForKey:PHImageErrorKey];
if (error) {
[delegate URLRequest:cancellationBlock didCompleteWithError:error];
}
} failureBlock:^(NSError *loadError) {
if (atomic_load(&cancelled)) {
return;
}
[delegate URLRequest:cancellationBlock didCompleteWithError:loadError];
}];
NSInteger const length = [imageData length];
CFStringRef const dataUTIStringRef = (__bridge CFStringRef _Nonnull)(dataUTI);
CFStringRef const mimeType = UTTypeCopyPreferredTagWithClass(dataUTIStringRef, kUTTagClassMIMEType);
NSURLResponse *const response = [[NSURLResponse alloc] initWithURL:request.URL
MIMEType:(__bridge NSString *)(mimeType)
expectedContentLength:length
textEncodingName:nil];
CFRelease(mimeType);
[delegate URLRequest:cancellationBlock didReceiveResponse:response];
[delegate URLRequest:cancellationBlock didReceiveData:imageData];
[delegate URLRequest:cancellationBlock didCompleteWithError:nil];
}];
return cancellationBlock;
}
@@ -116,12 +118,3 @@ static void ensureAssetsLibLoaded(void)
}
@end
@implementation RCTBridge (RCTAssetsLibraryImageLoader)
- (ALAssetsLibrary *)assetsLibrary
{
return [[self moduleForClass:[RCTAssetsLibraryRequestHandler class]] assetsLibrary];
}
@end