Android Image Picker Launcher: onResult Callback Not Invoked on Dismissal

[blakelee]

Description:

When using rememberImagePickerLauncher, the onResult callback is never invoked if the user dismisses the image picker without selecting an image. This causes the consumer’s state to remain in a “picker active” state, expecting a result that never comes, which then requires an extra click to recover.

Current Behavior:

• If an image is selected, the callback correctly processes the image.
• If the user cancels/dismisses the picker (i.e., no image is selected), the callback is not triggered at all, and onCanceled() is never called.

Code Example:

val imagePicker = rememberImagePickerLauncher(
  scope = scope
) { result ->
  if (result.isNotEmpty()) {
    // Do something with result
  } else {
    onCanceled()
  }
}

Expected Behavior:

The onResult callback should always be invoked—regardless of whether the user selects an image or cancels the picker. When dismissed, it should trigger the callback with an empty result (or a null value) so that the consumer can correctly handle the cancellation via onCanceled().

Steps to Reproduce:

1. Launch the image picker using rememberImagePickerLauncher.
2. Dismiss the image picker without selecting an image.
3. Notice that onResult is not called, and the UI remains in an inconsistent state.

Proposed Fix:

Modify the image picker launcher implementation to ensure that onResult is always called. If the image picker is dismissed without a selection, the callback should be triggered with an empty result, allowing consumers to update the UI accordingly.

Please let me know if you need any additional details.