Mixing
flutter dart - i have a complicated function that cause the app to lose connection/freeze completely
i wrote a dart function that uses 9 levels nested arrays and objects that will generate from multiple json files. basically, it's the hall app in one function and it can not split.
when the user presses a button, this function is called, but sometimes when the user chooses lots of information to process, the app completely freeze (on a physical device) or lose connection in the emulator without any specific error message.
i thought of "async function" but no luck, or i didn't do it like I'm supposed to (example attached).
i can't get a backend for this process also.
sorry if my question is vague or not specific, first time asking here, i can provide additional information if needed.
FutureBuilder(
future: myFunction(),
builder: (BuildContext context, AsyncSnapshot snapshot) {
if (snapshot.hasData) {
return gridViewFromJson(snapshot.data);
} else if (snapshot.hasError) {
print(snapshot.error);
print('error');
return null;
}
return new CircularProgressIndicator();
})
Future myFunction() async {
return await generateInfo();
}
//////////////
Future generateInfo() async {
/// processing here
return listOfDate;
}
dart
flutter freeze asked Jan 2 at 1:37
Waleed AlenaziWaleed Alenazi
81
add a comment |
i wrote a dart function that uses 9 levels nested arrays and objects that will generate from multiple json files. basically, it's the hall app in one function and it can not split.
when the user presses a button, this function is called, but sometimes when the user chooses lots of information to process, the app completely freeze (on a physical device) or lose connection in the emulator without any specific error message.
i thought of "async function" but no luck, or i didn't do it like I'm supposed to (example attached).
i can't get a backend for this process also.
sorry if my question is vague or not specific, first time asking here, i can provide additional information if needed.
FutureBuilder(
future: myFunction(),
builder: (BuildContext context, AsyncSnapshot snapshot) {
if (snapshot.hasData) {
return gridViewFromJson(snapshot.data);
} else if (snapshot.hasError) {
print(snapshot.error);
print('error');
return null;
}
return new CircularProgressIndicator();
})
Future myFunction() async {
return await generateInfo();
}
//////////////
Future generateInfo() async {
/// processing here
return listOfDate;
}
dart
flutter freeze asked Jan 2 at 1:37
Waleed AlenaziWaleed Alenazi
81
You may have to useisolate...flutter.io/docs/cookbook/networking/…
– Dinesh Balasubramanian
Jan 2 at 2:22
i can't afford servers to do this
– Waleed Alenazi
Jan 2 at 16:00
No servers. Useisolateto do the computation heavy task
– Dinesh Balasubramanian
Jan 2 at 16:29
add a comment |
i wrote a dart function that uses 9 levels nested arrays and objects that will generate from multiple json files. basically, it's the hall app in one function and it can not split.
when the user presses a button, this function is called, but sometimes when the user chooses lots of information to process, the app completely freeze (on a physical device) or lose connection in the emulator without any specific error message.
i thought of "async function" but no luck, or i didn't do it like I'm supposed to (example attached).
i can't get a backend for this process also.
sorry if my question is vague or not specific, first time asking here, i can provide additional information if needed.
FutureBuilder(
future: myFunction(),
builder: (BuildContext context, AsyncSnapshot snapshot) {
if (snapshot.hasData) {
return gridViewFromJson(snapshot.data);
} else if (snapshot.hasError) {
print(snapshot.error);
print('error');
return null;
}
return new CircularProgressIndicator();
})
Future myFunction() async {
return await generateInfo();
}
//////////////
Future generateInfo() async {
/// processing here
return listOfDate;
}
dart
flutter freeze asked Jan 2 at 1:37
Waleed AlenaziWaleed Alenazi
81
i wrote a dart function that uses 9 levels nested arrays and objects that will generate from multiple json files. basically, it's the hall app in one function and it can not split.
when the user presses a button, this function is called, but sometimes when the user chooses lots of information to process, the app completely freeze (on a physical device) or lose connection in the emulator without any specific error message.
i thought of "async function" but no luck, or i didn't do it like I'm supposed to (example attached).
i can't get a backend for this process also.
sorry if my question is vague or not specific, first time asking here, i can provide additional information if needed.
FutureBuilder(
future: myFunction(),
builder: (BuildContext context, AsyncSnapshot snapshot) {
if (snapshot.hasData) {
return gridViewFromJson(snapshot.data);
} else if (snapshot.hasError) {
print(snapshot.error);
print('error');
return null;
}
return new CircularProgressIndicator();
})
Future myFunction() async {
return await generateInfo();
}
//////////////
Future generateInfo() async {
/// processing here
return listOfDate;
}
dart
flutter freeze dart
flutter freeze asked Jan 2 at 1:37
Waleed AlenaziWaleed Alenazi
81
asked Jan 2 at 1:37
Waleed AlenaziWaleed Alenazi
81
asked Jan 2 at 1:37
Waleed AlenaziWaleed Alenazi
81
asked Jan 2 at 1:37
Waleed AlenaziWaleed Alenazi
81
asked Jan 2 at 1:37
Waleed AlenaziWaleed Alenazi
81
81
You may have to useisolate...flutter.io/docs/cookbook/networking/…
– Dinesh Balasubramanian
Jan 2 at 2:22
i can't afford servers to do this
– Waleed Alenazi
Jan 2 at 16:00
No servers. Useisolateto do the computation heavy task
– Dinesh Balasubramanian
Jan 2 at 16:29
add a comment |
You may have to useisolate...flutter.io/docs/cookbook/networking/…
– Dinesh Balasubramanian
Jan 2 at 2:22
i can't afford servers to do this
– Waleed Alenazi
Jan 2 at 16:00
No servers. Useisolateto do the computation heavy task
– Dinesh Balasubramanian
Jan 2 at 16:29
You may have to use
isolate...flutter.io/docs/cookbook/networking/…– Dinesh Balasubramanian
Jan 2 at 2:22
You may have to use
isolate...flutter.io/docs/cookbook/networking/…– Dinesh Balasubramanian
Jan 2 at 2:22
i can't afford servers to do this
– Waleed Alenazi
Jan 2 at 16:00
i can't afford servers to do this
– Waleed Alenazi
Jan 2 at 16:00
No servers. Use
isolate to do the computation heavy task– Dinesh Balasubramanian
Jan 2 at 16:29
No servers. Use
isolate to do the computation heavy task– Dinesh Balasubramanian
Jan 2 at 16:29
add a comment |
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You may have to use
isolate...flutter.io/docs/cookbook/networking/…– Dinesh Balasubramanian
Jan 2 at 2:22
i can't afford servers to do this
– Waleed Alenazi
Jan 2 at 16:00
No servers. Use
isolateto do the computation heavy task– Dinesh Balasubramanian
Jan 2 at 16:29