Flutter_how i can solve the test problem? - flutter

I am facing one error when i try to test my codes like in the picture in bellow.

You are getting the error because you have a wrong import statment.
Go to the top of your code and remove the line that has import dart:ui.
That would solve the problem. I hope this helps.

Related

ionic navigation not working and giving cannot find module path

This is the error , i have checked everything in my modules and component and there is nothing missing (click to see photo)
your second-page import path is wrong please change it
import { SecondPage } from '../second/second'
i hope its work for you.

radial progress bar to ionic v.2?

I need a radial progress bar Ionic. V.2, but found only for Ionic v.1 (https://github.com/tgarlanger/ion-radial-progress).
Has anyone done or figured out how to do it?
I know it's too late. But, it might help someone else. I was looking for same kind of thing and found this. Worked like a charm! Follow the instructions on this link: https://github.com/crisbeto/angular-svg-round-progressbar and import the module like this =>
import { RoundProgressModule } from "angular-svg-round-progressbar/dist";
#NgModule({
imports: [
RoundProgressModule
]
})
Notice: import statement is the important part which I have demonstrated above. Copy the import statement from above, not from the link. Other instructions are very clear on that github page.

NSTableview reloadDataForRowIndexes sounds in mac

I am developing an app for Mac, I am getting a weird issue. When ever i reload a row and for a particular column when the reload code executes i am getting a sound output from my mac.
Below is the code
myTableView.reloadDataForRowIndexes(myTableView.selectedRowIndexes, columnIndexes: NSIndexSet.init(index: myTableView.columnWithIdentifier("source")))
I have a column with identifier "source", When ever i try to reload and after the execution of the above line i am getting sound in my mac.
I am using Xcode 7.3, OSX 10.11.6
Have you tried setting a breakpoint on NSBeep()? My gues would be that the table, or some other code trigger by the update is sending an error message.
Finally i found the issue. I debugged the code in depth and found the root cause.
Sound is coming when ever i am calling below code, here sourceTextField is a NSTextField. I commented this code and every thing is working fine.(i can directly give the value to text field like sourceTextField.stringValue.)
sourceTextField.insertText(itemText)
Thanks to all of you who made some time to write a comment/ post a message, Sorry for bothering you all guys.

What will be reason behind this error?

I am fresher in iphone programming.Whenever i create a new project in x-code it's giving this error.Please anybody, help me to solve this problem.I am attaching snapshot below:-
It'll be a great help. Thank you
You just need to add those missing headers to your project.
check out your .h file.
Might be you had deleted #end by mistake or somewhere ‘;’ is missing after statement declarations.

uitableview not showing data

i followed the tutorial -> http://icodeblog.com/2008/09/02/iphone-programming-tutorial-creating-a-todo-list-using-sqlite-part-2/
but the thing is my uitableview isnt showing anything from database!! i did an nslog and able to query the data..so what could be the possible error?
i went through line by line with the source..but still can't find any problem..anyone tried the tutorial and face similiar problem as me?
Delegate and Datasources are connected?
I downloaded the sample code and it works with no problems under OS 3.0 and 3.1.2 and
http://icodeblog.com/wp-content/uploads/2008/09/todo-part-21.zip