Flutter image picker

lib

image_picker: ^0.6.7+14

Info.plist

<key>NSCameraUsageDescription</key>
<string>App requires access to the camera for avatar upload</string>
<key>NSPhotoLibraryUsageDescription</key>
<string>App requires access to the photo library for avatar upload</string>

AndroidManifest.xml

android:requestLegacyExternalStorage="true"

function

Future<void> _selectImageSource(BuildContext context) async {
    // Close keyboard
    FocusScope.of(context).requestFocus(FocusNode());

    // Define max size of image
    const double maxWidth = 350;
    const double maxHeight = 500;

    // Show choose image source
    final List<String> source = <String>['Camera', 'Gallery'];
    final List<CupertinoActionSheetAction> actions = source
        .map((String it) => CupertinoActionSheetAction(
              isDefaultAction: true,
              onPressed: () {
                // pop value
                Navigator.pop<int>(context, source.indexOf(it));
              },
              child: Text(
                it,
                style: boldTextStyle(14, Colors.black),
              ),
            ))
        .toList(growable: false);

    final int index = await showCupertinoModalPopup<int>(
      context: context,
      builder: (BuildContext context) => CupertinoActionSheet(
        actions: actions,
        cancelButton: CupertinoActionSheetAction(
          isDefaultAction: true,
          isDestructiveAction: true,
          onPressed: () {
            // pop null
            Navigator.pop(context);
          },
          child: Text(
            'Close',
            style: boldTextStyle(14, Colors.red),
          ),
        ),
      ),
    );

    if (index != null) {
      final ImagePicker _imagePicker = ImagePicker();
      final PickedFile image = await _imagePicker.getImage(
        source: index == 0 ? ImageSource.camera : ImageSource.gallery,
        maxWidth: maxWidth,
        maxHeight: maxHeight,
      );
      if (image != null) {
        final File file = File(image.path);

        // Upload media image
        firebaseCallSafety(() {
          return CloudStorage.I.uploadFile(file);
        }, onStart: () async {
          AppLoadingProvider.show(context);
        }, onCompleted: (bool status, void _) async {
          AppLoadingProvider.hide(context);
          if (status) {
            AppHelper.showToast('success');
          }
        });
      }
    }
  }

Usage

IconButton(
  icon: const Icon(Icons.photo_library),
  onPressed: () {
    selectImageSource(context);
  },
),

@nhancv