adaptive_app_icon

Declare one source image per icon; the codegen produces every platform asset and bundles it. No hand-cut densities, and no Xcode Copy Bundle Resources step.

Breaking

• The ios_asset: key is gone — iOS app-icon sets are now named after the icon itself, so the name is derived. Codegen errors with a migration hint if the key is still present. android_asset: is now optional too, defaulting to ic_launcher for the primary icon and ic_launcher_<name> for alternates.
• Icon name must be lower_snake_case: it becomes an iOS app-icon set name and an Android component name.
• iOS alternate icons move from loose PNGs in ios/Runner/ to app-icon sets in Assets.xcassets. Delete the old AppIcon-*@2x.png / @3x.png files in Xcode (codegen warns while any remain); the CFBundleIcons block that referenced them is stripped from ios/Runner/Info.plist automatically. See the migration steps in the README.

Added

• image: renders the Android density PNGs (mdpi→xxxhdpi, alpha preserved) and the iOS app-icon sets (flattened, since iOS renders an alpha channel as a black square) from a single square master.
• Config can live in pubspec.yaml under adaptive_app_icon:; a standalone adaptive_app_icon.yaml still works as a fallback.
• Xcode asset-catalog build settings are set on every build configuration, so alternates are bundled without editing Copy Bundle Resources — the silent blank-icon failure that layout allowed is gone.
• background: (per icon or top level) sets what iOS icons are flattened onto.
• preview: defaults to image:, so the gallery needs no extra file.
• --no-images wires up existing assets without re-rendering.
• Codegen warns when a preview isn't declared under flutter: assets:, which otherwise shows a placeholder at runtime with no error.

Fixed

• The manifest emitted android:icon="@mipmap/…" even when validation had accepted a drawable-*/ resource, producing a reference that failed to resolve. The container is now detected and the matching prefix emitted.

Initial release.

• Runtime app-icon switching on iOS (setAlternateIconName) and Android (activity-alias toggling). On Android every icon is its own alias and the main activity is never toggled, so switching never disables the running component. androidApplyMode chooses when the change lands: whenBackgrounded (default, no visible close) or immediately (app closes; the user reopens). IconGallery.confirmChange lets you gate a switch behind a dialog.
• Config-driven codegen (dart run adaptive_app_icon:generate_icon_config) that reads adaptive_app_icon.yaml and updates Info.plist, AndroidManifest.xml, and a typed app_icons.g.dart, with asset validation and an icon-count warning.
• Type-safe native bridge generated with Pigeon.
• DynamicAppIcon API with shared_preferences-backed selection caching.
• Drop-in IconGallery widget with optimistic selection and rollback.