async_executor

Description:

async executor

Async Executor #
Async Executor is a tool what allow you execute any asynchronous functions handling the loading process and error catch, with normal popups.
Example #

class MyHomePage extends StatelessWidget {
final AsyncExecutor normal = AsyncExecutor();
final AsyncExecutor custom = AsyncExecutor(loadingMessage: ({
BuildContext context,
}) async {
return await showDialog(
context: context,
barrierDismissible: false,
builder: (context) {
return WillPopScope(
onWillPop: () async => false,
child: Column(
mainAxisSize: MainAxisSize.min,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Material(
color: Colors.transparent,
child: Container(
height: 60,
child: Center(
child: CircularProgressIndicator(
backgroundColor: Colors.green,
),
),
),
)
],
),
);
},
);
}, errorMessage: ({
dynamic error,
BuildContext context,
}) async {
return await showDialog(
context: context,
builder: (dialogContext) {
return AlertDialog(
title: Text("Error"),
content: Text(
"$error",
style: TextStyle(color: Colors.red),
),
actions: [
FlatButton(
child: Text("OK"),
onPressed: () {
Navigator.pop(dialogContext);
},
)
],
);
},
);
});

@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Async Executor Demo'),
),
body: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
RaisedButton(
onPressed: () {
normal.run(
context: context,
onExecute: () async {
await Future.delayed(Duration(seconds: 3));
},
onFinish: (value) {
log("on finish");
});
},
child: Text("normal"),
),
RaisedButton(
onPressed: () {
normal.run(
context: context,
onExecute: () async {
await Future.delayed(Duration(seconds: 3));
int count;
count++;
},
onFinish: (value) {
log("on finish");
});
},
child: Text("normal with error"),
),
RaisedButton(
onPressed: () {
custom.run(
context: context,
onExecute: () async {
await Future.delayed(Duration(seconds: 3));
},
onFinish: (value) {
log("on finish");
});
},
child: Text("custom"),
),
RaisedButton(
onPressed: () {
custom.run(
context: context,
onExecute: () async {
await Future.delayed(Duration(seconds: 3));
int count;
count++;
},
onFinish: (value) {
log("on finish");
});
},
child: Text("custom with error"),
),
],
),
);
}
}

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