cobi_flutter_settings

An application settings screen that persists values via the shared_preferences package. This is a material-only version of cobi_flutter_platform_settings

Getting Started

All widgets come with a property 'settingsKey' which is used to store them in shared_preferences, so you can retrieve the value from anywhere using the same key. The only exceptions from this are SettingsScreen, SettingsGroup and CustomSetting (which is intended to launch navigation routes or to just show some information).

Widgets

SettingsScreen

The uppermost settings container. Use this as a starting point.

SettingsScreen (
  title: 'App Settings',
  children: [],
)

SettingsGroup

A container that groups various settings together

SettingsGroup (
  title: 'First Group',
  children: [],
)

CustomSetting

A settings widget that takes an onPressed action, useful e.g. to launch navigation routes.

CustomSetting (
  title: 'My Custom Setting',
  subtitle: 'My subtitle',
  onPressed: () => debugPrint('hello world!'),
)

TextSetting

A widget that shows a textfield

TextSetting<int>(
  settingsKey: 'text-setting',
  title: 'A text setting for integers only',
  keyboardType: TextInputType.number,
  defaultValue: 42000,
  validator: (value) {
    if (value == null || value < 1024 || value > 65536) {
      return 'Integer number between 1024 and 65536 expected';
    }
  },
),

SwitchSetting

A widget with a two-state switch

SwitchSetting(
  settingsKey: 'switch-setting',
  title: 'This is a switch setting',
  defaultValue: true,
)

CheckboxSetting

A widget with a checkbox

CheckboxSetting(
  settingsKey: 'checkbox-setting',
  title: 'This is a checkbox setting',
  defaultValue: false,
),

RadioSetting

This shows a list of radio buttons

RadioSetting<int>(
  settingsKey:  'radio-setting',
  title:  'This is a radio setting',
  items: [
    ListItem<int>(value: 1, caption: 'One'),
    ListItem<int>(value: 2, caption: 'Two'),
    ListItem<int>(value: 3, caption: 'Three'),
    ListItem<int>(value: 4, caption: 'Four'),
    ListItem<int>(value: 5, caption: 'Five'),
  ],
),

RadioModalSetting

The radio buttons in this one are shown in a dialog

RadioModalSetting<int>(
  settingsKey: 'radio-modal-setting',
  title: 'This is a modal radio setting',
  defaultValue: 5,
  items: [
    ListItem<int>(value: 1, caption: 'One'),
    ListItem<int>(value: 2, caption: 'Two'),
    ListItem<int>(value: 3, caption: 'Three'),
    ListItem<int>(value: 4, caption: 'Four'),
    ListItem<int>(value: 5, caption: 'Five'),
    ListItem<int>(value: 6, caption: 'Six'),
  ],
),

SliderSetting

You guessed right, a widget with a slider

SliderSetting(
  settingsKey: 'slider-setting',
  title: 'This is a slider setting',
  minValue: 0.0,
  maxValue: 100.0,
  divisions: 100,
  defaultValue: 25.0,
),

You can find more example use cases in the included example app.

Extensibility

You can define your own widgets by subclassing SettingsWidgetBase<T> and SettingsWidgetBaseState<T, YourSettingsWidgetClass> with T being the type stored via shared_preferences. If you need a data type not supplied by shared_preferences, you can override SettingsWidgetBaseState::persist() and do the serialization yourself.

Libraries

cobi_flutter_settings
A flutter package that uses the packages shared_preferences for persistence