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keithdmoore opened this issue Feb 21, 2025 · 3 comments · May be fixed by #1247
Open

Error on iOS with RNFS.read function #1246

keithdmoore opened this issue Feb 21, 2025 · 3 comments · May be fixed by #1247

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@keithdmoore
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keithdmoore commented Feb 21, 2025 •
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When attempting to read a file with RNFS.read like this:

const chunk = await RNFS.read(uri, CHUNK_SIZE, position, 'base64')

I get this error:
[Error: RNFSManager.read(): Error while converting JavaScript argument 1 to Objective C type NSInteger. Objective C type NSInteger is unsupported.]

"react-native-fs": "^2.20.0",
"react-native": "0.76.5",
@keithdmoore
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This issue is with the length and position parameters in RNFSManager.m read method:

Should be:
RCT_EXPORT_METHOD(read:(NSString *)filepath
length: (NSInteger)length
position: (NSInteger)position
resolver:(RCTPromiseResolveBlock)resolve
rejecter:(RCTPromiseRejectBlock)reject)

instead of:
RCT_EXPORT_METHOD(read:(NSString *)filepath
length: (NSInteger *)length
position: (NSInteger *)position
resolver:(RCTPromiseResolveBlock)resolve
rejecter:(RCTPromiseRejectBlock)reject)

Here is a patch file in case others run into this issue:

react-native-fs+2.20.0.patch

keithdmoore added a commit to keithdmoore/react-native-fs that referenced this issue Feb 21, 2025
@keithdmoore
Fix NSInteger parameter types for length and position in read function
49dc793 
Fixes itinance#1246
@keithdmoore keithdmoore linked a pull request Feb 21, 2025 that will close this issue
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@AtilMohAmine
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AtilMohAmine commented Mar 16, 2025 •
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I am facing the same issue
The patch worked

@dgreasi
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dgreasi commented Apr 28, 2025

Same issue for me on iOS:

"react-native": "^0.78.2",
"react-native-fs": "2.20.0",

The patch worked

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Fix NSInteger parameter types for length and position in read function keithdmoore/react-native-fs
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@keithdmoore @dgreasi @AtilMohAmine