一次

once

Want to run/show a piece of code/widget once (Once - Hourly - Daily - Weekly - Monthly - Every new version - Any custom duration)? We cove your back.

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Some things should happen once.

• Users should only get the guided tour once.
• Release notes should only pop up once every new app version comes.
• Etc.. once every (Whatever you want).

Once supports runOnce, runUntilDone, runOnEveryNewVersion, runEvery12Hours, runHourly, runDaily, runOnNewDay, runWeekly, runMonthly, runOnNewMonth, runYearly and runCustom.

Some widgets should show once.

• Users should only get this alert OnceWidget.
• Hello it new version widget shows OnceWidget every new app version comes.
• Etc.. OnceWidget every (Whatever you want).

OnceWidgets supports showOnce, showUntilDone, showOnEveryNewVersion, showEvery12Hours, showHourly, showDaily, showOnNewDay, showWeekly, showMonthly, showOnNewMonth, showYearly and showCustom.

Usage

Once

Mainly runner functions consists of callbacks and fallbacks

• callback is the generic function that runs and returns a future<T?> .
• fallback is the same but only runs in case that callback future returns null.

Now you're ready to go. Say you wanted to show the new features dialog when new version of the app come:

Once.runOnEveryNewVersion(
  callback: () {
    /* What's new in 2.3.2 version? dialog */
  },
  fallback: () {
   /* Navigate to new screen */
  },
);

Or maybe you want to show the rate this app dialog weekly:

if (!rated) {
  Once.runWeekly("ratingDialog",
    callback: () { 
       /* Like our app, Please rate us. dialog */ 
    },
    fallback: () {
      /* Thanks */
    },
  );
}

Or maybe you want to show a feature prompt until the user explicitly dismisses it:

Once.runUntilDone("feature_prompt",
  callback: (dismiss) { 
     /* Show feature prompt dialog */ 
     // Call dismiss() when the user clicks "Got it"
     dismiss();
  },
  fallback: () {
    /* Feature already acknowledged */
  },
);

OnceWidget

Mainly builder functions consists of builders and fallbacks

• builder is the generic function that shows and returns a Widget and provide for BuildContext.
• fallback is the same but only shows in case that callback future returns null (defaults to SizedBox.shrink()) and provide for BuildContext.

Now you're ready to go. Say you wanted to view a banner widget when the app is updated:

OnceWidget.showOnEveryNewVersion(
  builder: (context) {
   return Container(...);
  },
);

Or maybe you want to show the hello new week widget weekly:

OnceWidget.showWeekly("weekWidget",
  builder: (context) {
     return Text('Hello, New Week');
   },
  fallback: (context) {
     return Text('Hello!');
   },
);

Or maybe you want to show a banner until the user dismisses it:

OnceWidget.showUntilDone("onboarding_banner",
  builder: (dismiss) {
     return Row(
       children: [
         Text('New feature available!'),
         ElevatedButton(
           onPressed: dismiss, // Will not show again after being clicked
           child: Text('Got it'),
         ),
       ],
     );
   },
  fallback: () {
     return SizedBox.shrink();
   },
);

Additional

Functions

• clear removes the Once or OnceWidget data for a specific key.
• clearAll removes all the Once and OnceWidget data.
• markDone manually flags a key as completed for untilDone operations.

Parameters

• debugCallback used to debug the callback function.
• debugFallback used to debug the fallback function.

Note: The debug parameters are only works in debug mode.

Contributors

• Mostafa Soliman
• Nour Magdi

Inspired by the Java library Once made by Jon Finerty