[image_picker_ios] Return an error for undecodable image data

packages/image_picker/image_picker_ios/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.8.13+7
+
+* Returns an error when selected image data cannot be decoded.
+
 ## 0.8.13+6
 
 * Replaces deprecated `kUTTypeGIF` with `UTTypeGIF` to fix iOS 15+ deprecation warnings.

packages/image_picker/image_picker_ios/example/ios/RunnerTests/PickerSaveImageToPathOperationTests.m

@@ -229,6 +229,44 @@ - (void)testFailingImageLoad API_AVAILABLE(ios(14)) {
   [self waitForExpectationsWithTimeout:30 handler:nil];
 }
 
+- (void)testUndecodableImageDataReturnsErrorAndFinishes API_AVAILABLE(ios(14)) {
+  NSData *undecodableImageData = [@"not an image" dataUsingEncoding:NSUTF8StringEncoding];
+
+  id mockItemProvider = OCMClassMock([NSItemProvider class]);
+  OCMStub([mockItemProvider hasItemConformingToTypeIdentifier:UTTypeImage.identifier])
+      .andReturn(YES);
+  [[mockItemProvider stub]
+      loadDataRepresentationForTypeIdentifier:UTTypeImage.identifier
+                            completionHandler:[OCMArg invokeBlockWithArgs:undecodableImageData,
+                                                                          [NSNull null], nil]];
+
+  id pickerResult = OCMClassMock([PHPickerResult class]);
+  OCMStub([pickerResult itemProvider]).andReturn(mockItemProvider);
+
+  XCTestExpectation *errorExpectation = [self expectationWithDescription:@"invalid image error"];
+  XCTestExpectation *operationExpectation =
+      [self expectationWithDescription:@"Operation completed"];
+
+  FLTPHPickerSaveImageToPathOperation *operation = [[FLTPHPickerSaveImageToPathOperation alloc]
+           initWithResult:pickerResult
+                maxHeight:@100
+                 maxWidth:@100
+      desiredImageQuality:@100
+             fullMetadata:YES
+           savedPathBlock:^(NSString *savedPath, FlutterError *error) {
+             XCTAssertNil(savedPath);
+             XCTAssertEqualObjects(error.code, @"invalid_image");
+             [errorExpectation fulfill];
+           }];
+  operation.completionBlock = ^{
+    [operationExpectation fulfill];
+  };
+
+  [operation start];
+  [self waitForExpectationsWithTimeout:30 handler:nil];
+  XCTAssertTrue(operation.isFinished);
+}
+
 - (void)testSavePNGImageWithoutFullMetadata API_AVAILABLE(ios(14)) {
   id photoAssetUtil = OCMClassMock([PHAsset class]);
 

packages/image_picker/image_picker_ios/ios/image_picker_ios/Sources/image_picker_ios/FLTPHPickerSaveImageToPathOperation.m

@@ -127,6 +127,13 @@ - (void)start {
 /// Processes the image.
 - (void)processImage:(NSData *)pickerImageData API_AVAILABLE(ios(14)) {
   UIImage *localImage = [[UIImage alloc] initWithData:pickerImageData];
+  if (localImage == nil) {
+    FlutterError *flutterError = [FlutterError errorWithCode:@"invalid_image"
+                                                     message:@"Could not decode image data."
+                                                     details:nil];
+    [self completeOperationWithPath:nil error:flutterError];
+    return;
+  }
 
   if (self.maxWidth != nil || self.maxHeight != nil) {
     localImage = [FLTImagePickerImageUtil scaledImage:localImage

packages/image_picker/image_picker_ios/pubspec.yaml

@@ -2,7 +2,7 @@ name: image_picker_ios
 description: iOS implementation of the image_picker plugin.
 repository: https://github.com/flutter/packages/tree/main/packages/image_picker/image_picker_ios
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+image_picker%22
-version: 0.8.13+6
+version: 0.8.13+7
 
 environment:
   sdk: ^3.10.0