Merge pull request miguelpruivo#1041 from blaugold/fix/file-utils-resolve-type

Miguel Ruivo · web-flow · commit c321e9d8c9ac · 2022-06-01T11:15:16.000+01:00
Handle `UTTypeCreatePreferredIdentifierForTag` returning `NULL`
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## 4.6.1
+
+#### iOS
+Handle `UTTypeCreatePreferredIdentifierForTag` returning `NULL`. This prevents a crash observed
+on the iOS simulator on Apple Silicon ([#1040](https://github.com/miguelpruivo/flutter_file_picker/issues/783)).
+
 ## 4.6.0
 
 #### iOS
diff --git a/ios/Classes/FileUtils.m b/ios/Classes/FileUtils.m
@@ -47,15 +47,18 @@ + (BOOL) clearTemporaryFiles {
         
         NSMutableArray<NSString*>* utis = [[NSMutableArray<NSString*> alloc] init];
         
-        for(int i = 0 ; i<allowedExtensions.count ; i++){
+        for(int i = 0 ; i<allowedExtensions.count ; i++) {
             NSString * format = [NSString stringWithFormat:@"dummy.%@", allowedExtensions[i]];
             CFStringRef UTI = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, (__bridge CFStringRef)[format pathExtension], NULL);
             NSString * UTIString = (__bridge NSString *)(UTI);
-            CFRelease(UTI);
-            if([UTIString containsString:@"dyn."]){
+            if (UTI) CFRelease(UTI);
+            if (!UTI) {
+                Log(@"[Skipping type] Resolving type from extension is not supported: %@", allowedExtensions[i]);
+                continue;
+            } else if ([UTIString containsString:@"dyn."]) {
                 Log(@"[Skipping type] Unsupported file type: %@", UTIString);
                 continue;
-            } else{
+            } else {
                 Log(@"Custom file type supported: %@", UTIString);
                 [utis addObject: UTIString];
             }
diff --git a/pubspec.yaml b/pubspec.yaml
@@ -3,7 +3,7 @@ description: A package that allows you to use a native file explorer to pick sin
 homepage: https://github.com/miguelpruivo/plugins_flutter_file_picker
 repository: https://github.com/miguelpruivo/flutter_file_picker
 issue_tracker: https://github.com/miguelpruivo/flutter_file_picker/issues
-version: 4.6.0
+version: 4.6.1
 
 dependencies:
   flutter:
