myHomeApp | 移动端H5 app | Mobile Application library
kandi X-RAY | myHomeApp Summary
kandi X-RAY | myHomeApp Summary
移动端H5 app
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QUESTION
I need to convert Future
to bool
. I know it can be done with then
and await
but how?
ANSWER
Answered 2020-Jan-27 at 15:16bool checkDatabase() async{ // change return type to bool
Directory directory = await getApplicationDocumentsDirectory();
String path = directory.path + 'koca.db';
bool exists = await databaseExists(path); // await to get bool value
return exists; // return bool value
}
QUESTION
I'm trying to build a screen in flutter where, I have three rows in a column, each consists of:
- text
- IconButton(add icon)
- text
When I'm clicking on the add icon I need to increment a counter variable and display it as Text(third bullet point)
Checkout the screenn here : https://ibb.co/37v4rDj
But I'm writing different functions for different counter variables, I don't want that, I want to write a single function which can increment different counter variables
This is my code :
...ANSWER
Answered 2019-Sep-17 at 15:44Add a Text field for each counter, looks like it's missing. Each text field will use its variable to display.
No need for outer function. in every onPressed() the specific counter should be incremented, for instance, just by calling upactr++
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