iOS从UIImagePickerController获取GIF和其他图片

部分代码&＃xff1a;

ALAssetsLibrary *library &＃61; [[ALAssetsLibrary alloc] init];
[library assetForURL:[info objectForKey:UIImagePickerControllerReferenceURL]resultBlock:^(ALAsset *asset) {&＃64;strongify(filePath)&＃64;strongify(imagePath)&＃64;strongify(photoName)ALAssetRepresentation *representation &＃61; [asset defaultRepresentation];NSLog(&＃64;"size of asset in bytes: %lld", [representation size]);Byte *buffer &＃61; (Byte*)malloc(representation.size);NSUInteger buffered &＃61; [representation getBytes:buffer fromOffset:0.0 length:representation.size error:nil];NSData *imgData &＃61; [NSData dataWithBytesNoCopy:buffer length:buffered freeWhenDone:YES];NSLog(&＃64;"imagePath &＃61;&＃61;&＃61; %&＃64;", imagePath);NSLog(&＃64;"photoName &＃61;&＃61;&＃61; %&＃64;", photoName);if ([[self typeForImageData:imgData] isEqualToString:&＃64;"image/gif"]) {NSLog(&＃64;"GIF image");filePath &＃61; [imagePath stringByAppendingPathComponent:[NSString stringWithFormat:&＃64;"%&＃64;.gif", photoName]];NSLog(&＃64;"filePath 3 &＃61;&＃61;&＃61; %&＃64;", filePath);[imgData writeToFile:filePath atomically:YES];NSLog(&＃64;"Check &＃61;&＃61;&＃61; %d", [imgData writeToFile:filePath atomically:YES]);} else {NSLog(&＃64;"not GIF image");filePath &＃61; [imagePath stringByAppendingPathComponent:[NSString stringWithFormat:&＃64;"%&＃64;.jpg", photoName]];NSLog(&＃64;"filePath 4 &＃61;&＃61;&＃61; %&＃64;", filePath);CGRect rect &＃61; CGRectMake(0, 0, 750, 750 / image.size.width *image.size.height);UIGraphicsBeginImageContext( rect.size );[image drawInRect:rect];UIImage *picture &＃61; UIGraphicsGetImageFromCurrentImageContext();UIGraphicsEndImageContext();[UIImageJPEGRepresentation(picture, 1) writeToFile:filePath atomically:YES];}NSLog(&＃64;"photoName 1 &＃61;&＃61;&＃61; %&＃64;", photoName);[self.wkWebView evaluateJavascript:[NSString stringWithFormat:&＃64;"%&＃64;(%&＃64;)", [ConfigHelper getStringValueForKey:&＃64;"uploadImageIdMethod"], photoName] completionHandler:nil];}failureBlock:^(NSError *error) {NSLog(&＃64;"couldn&＃39;t get asset: %&＃64;", error);[self showHud:&＃64;"图片上传有误&＃xff01;"];}
];