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0

I'm getting started with flutter and did this guide (https://flutter.dev/docs/get-started/codelab). I wanted to extend this app by providing the option to unselect saved entrys. My code works in that sense that you can unselect entrys but the 'Saved Suggestions' list is not rerendered after a tap on the icon.

The whole code can be found here: https://gist.githubusercontent.com/Sfshaza/a95ff8ed0473073197d28437c8d68492/raw/6fb529524047c8c093cb6212dfb66635202ba272/main.dart

I simply edited this part in the _pushSaved() methode:

final Iterable<ListTile> tiles = _saved.map(
 (WordPair pair) 
 return new ListTile(
 title: new Text(
 pair.asPascalCase,
 style: _biggerFont,
 ),
 trailing: new Icon(
 Icons.favorite,
 color: Colors.red,
 ),
 onTap: () 
 setState(() 
 _saved.remove(pair);
 );
 ,
 );
 ,
);

I read setState() reruns the build() methode but the methode _pushSaved() does not seem to be rerun. Is this because _pushSaved() is only run when the onPressed event is triggered by pressing on the list icon? I tried to rerun the build method manually after removing the word pair but it didn't work.

setState(() 
 _saved.remove(pair);
 this.build(context);
);

Appreciate your help!

dart flutter

share|improve this question

asked Mar 28 at 20:47

mxcxxmxcxx

1833 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  it's calling setState but on the first widget, you should extract the Saved Suggestions widget in a separated StatefulWidget
  
  – diegoveloper
  Mar 28 at 21:04
  

  
  
  
  

add a comment
 | 

0

I'm getting started with flutter and did this guide (https://flutter.dev/docs/get-started/codelab). I wanted to extend this app by providing the option to unselect saved entrys. My code works in that sense that you can unselect entrys but the 'Saved Suggestions' list is not rerendered after a tap on the icon.

The whole code can be found here: https://gist.githubusercontent.com/Sfshaza/a95ff8ed0473073197d28437c8d68492/raw/6fb529524047c8c093cb6212dfb66635202ba272/main.dart

I simply edited this part in the _pushSaved() methode:

final Iterable<ListTile> tiles = _saved.map(
 (WordPair pair) 
 return new ListTile(
 title: new Text(
 pair.asPascalCase,
 style: _biggerFont,
 ),
 trailing: new Icon(
 Icons.favorite,
 color: Colors.red,
 ),
 onTap: () 
 setState(() 
 _saved.remove(pair);
 );
 ,
 );
 ,
);

I read setState() reruns the build() methode but the methode _pushSaved() does not seem to be rerun. Is this because _pushSaved() is only run when the onPressed event is triggered by pressing on the list icon? I tried to rerun the build method manually after removing the word pair but it didn't work.

setState(() 
 _saved.remove(pair);
 this.build(context);
);

Appreciate your help!

dart flutter

share|improve this question

asked Mar 28 at 20:47

mxcxxmxcxx

1833 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  it's calling setState but on the first widget, you should extract the Saved Suggestions widget in a separated StatefulWidget
  
  – diegoveloper
  Mar 28 at 21:04
  

  
  
  
  

add a comment
 | 

I'm getting started with flutter and did this guide (https://flutter.dev/docs/get-started/codelab). I wanted to extend this app by providing the option to unselect saved entrys. My code works in that sense that you can unselect entrys but the 'Saved Suggestions' list is not rerendered after a tap on the icon.

The whole code can be found here: https://gist.githubusercontent.com/Sfshaza/a95ff8ed0473073197d28437c8d68492/raw/6fb529524047c8c093cb6212dfb66635202ba272/main.dart

I simply edited this part in the _pushSaved() methode:

final Iterable<ListTile> tiles = _saved.map(
 (WordPair pair) 
 return new ListTile(
 title: new Text(
 pair.asPascalCase,
 style: _biggerFont,
 ),
 trailing: new Icon(
 Icons.favorite,
 color: Colors.red,
 ),
 onTap: () 
 setState(() 
 _saved.remove(pair);
 );
 ,
 );
 ,
);

I read setState() reruns the build() methode but the methode _pushSaved() does not seem to be rerun. Is this because _pushSaved() is only run when the onPressed event is triggered by pressing on the list icon? I tried to rerun the build method manually after removing the word pair but it didn't work.

setState(() 
 _saved.remove(pair);
 this.build(context);
);

Appreciate your help!

dart flutter

share|improve this question

asked Mar 28 at 20:47

mxcxxmxcxx

1833 bronze badges

final Iterable<ListTile> tiles = _saved.map(
 (WordPair pair) 
 return new ListTile(
 title: new Text(
 pair.asPascalCase,
 style: _biggerFont,
 ),
 trailing: new Icon(
 Icons.favorite,
 color: Colors.red,
 ),
 onTap: () 
 setState(() 
 _saved.remove(pair);
 );
 ,
 );
 ,
);

setState(() 
 _saved.remove(pair);
 this.build(context);
);

dart flutter

dart flutter

share|improve this question

asked Mar 28 at 20:47

mxcxxmxcxx

1833 bronze badges

share|improve this question

asked Mar 28 at 20:47

mxcxxmxcxx

1833 bronze badges

asked Mar 28 at 20:47

mxcxxmxcxx

1833 bronze badges

asked Mar 28 at 20:47

mxcxxmxcxx

1833 bronze badges