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105 lines
3.0 KiB
105 lines
3.0 KiB
# Platform Design
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Instead of transliterating widgets one by one between Cupertino and Material,
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Android and iOS apps often follow different information architecture patterns
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that require some design decisions.
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This sample project shows a Flutter app that maximizes application code reuse
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while adhering to different design patterns on Android and iOS. On
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Android, it uses Material's [lateral navigation](https://material.io/design/navigation/understanding-navigation.html#types-of-navigation)
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based on a drawer and on iOS, it adheres to Apple Human Interface Guideline's
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[flat navigation](https://developer.apple.com/design/human-interface-guidelines/ios/app-architecture/navigation/)
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by using a bottom tab bar.
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Visually, the app presents platform-agnostic content surrounded by
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platform-specific 'chrome'.
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# Preview
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See https://youtu.be/svhbbFZg1IA for a longer non-gif format.
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# Features
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## Home
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Defines the top level navigation structure of the app and shows the contents
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of the songs tab on launch.
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### Android
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* Uses the drawer paradigm on the root page.
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### iOS
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* Uses bottom tab bars with parallel navigation stacks.
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## Songs feed tab
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Shows platform-agnostic cards that is tappable and that performs a hero
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transition on top of the platform native page transitions.
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Both platforms also show a button in their app/nav bar to toggle the platform.
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### Android
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* Android uses a static pull-to-refresh pattern with an additional refresh
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button in the app bar.
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* The song details page must be popped in order to change tabs on Android.
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### iOS
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* The iOS songs tab uses a scrollable iOS 11 large title style navigation bar.
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* iOS uses an overscrolling pull-to-refresh pattern.
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* On iOS, parallel tabs are always accessible and the songs tab's navigation
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stack is preserved when changing tabs.
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## News Tab
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Shows platform-agnostic news boxes.
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### Android
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* The news tab always appears on top of the songs tab when summoned from the
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drawer.
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### iOS
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* The news tab appears instead of the songs tab on iOS when switching tabs from
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the tab bar.
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## Profile Tab
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Shows a number of user preferences.
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### Android
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* The profile tab appears on top of the songs tab on Android.
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* Has tappable preference cards which shows a multiple-choice dialog on Android.
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* The log out button shows a 2 button dialog on Android.
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### iOS
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* The profile tab appears instead of the songs tab on iOS.
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* Has tappable preference cards which shows a picker on iOS.
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* The log out button shows a 3 choice action sheet on iOS.
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## Settings Tab
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Shows a number of app settings via Material switches which auto adapt to the
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platform.
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### Android
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* The settings is directly available in the drawer on Android since a Material
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Design drawer can fit many tabs.
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### iOS
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* The settings is accessible from a button inside the profile tab's nav bar on
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iOS. This is a common pattern since there are conventionally more items in the
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drawer than there are tabs.
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* On iOS, the settings page is shown as a full screen dialog instead of a tab
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in the tab scaffold.
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