I see people are doing like this:
import com.inducesmile.androidlocationtracking.database.DatabaseQuery;
and regards that import, this variable
private DatabaseQuery mQuery;
turns red.
it's different from something familiar like this:
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
can someone explain what it is:
com.inducesmile.androidlocationtracking.database.DatabaseQuery
and how do we fix it,
or how do we change it to our own website?
basically, I don't understand how to fix that error. thank you very much.
So, it turns out. it has a class name DatabaseQuery
and the com.inducesmile.androidlocationtracking.database is the package hierarcy, so, just follow the rule, you're good to go
Related
I created an application that uses the Room, ViewModel approach. I created subfolders to organize my code as shown in the photo:
How do I make my Main Activity recognize the code created in the subfolders? I tried invalidate caches/restart already and tried many times to rebuild the project.
There was an issue when I created my folders. I used New->Folder->Java Folder when the right process should be New->Package
You have to write an import statement for the classes to be recognized:
import com.example.laundry.data.ViewModel.CustomerViewModel
I think there are various ways to solve this problem.
Process 1.
For your Adapter import this
import com.example.laundry.adapter.CustomerListAdapter;
For your ViewModel import this
import com.example.laundry.data.ViewModel.CustomerViewModel;
Process 2
If you write down your adapter/model class name it will show some popup. From there you can select.
just like when I tried to import InfiniteScrollAdapter I got these options
Process 3
Please check if you have already import that adapter/model class with the different package names. Just delete that line and import again with alt+ enter
so i'm following a guide online to make a room db. In the adapter section i followed his way of doing it but when i did it, i keep having the "No Type Argument expected for Interface ListAdapter".
Error example: https://imgur.com/kPT7DkE
Here's the whole project so far on github.
https://github.com/OlivierLabelle/BudgetProject/tree/master/app/src/main/java/com/example/android/budgetproject
And the guide i was following.
https://medium.com/#trionkidnapper/recyclerview-more-animations-with-less-code-using-support-library-listadapter-62e65126acdb
So with the help of devboi, i found out i was using the wrong import.
In the top right corner on the Dev documentation it show the right import.
https://imgur.com/vGrCOVd
And here how the import on my project should look like.
import android.support.v7.recyclerview.extensions.ListAdapter
Just came across this very problem myself.
If you're using AndroidX/Jetpack/whatever the official name is I'm still new at this, Android Studio might
import android.widget.ListAdapter
automatically, but the one you want is
import androidx.recyclerview.widget.ListAdapter
From what I see in your code, you should replace ListAdapter<Transaction> with ListAdapter<Transaction, Viewholder>.
You can see an example in the docs here :(https://developer.android.com/reference/android/support/v7/recyclerview/extensions/ListAdapter.html), where ListAdapter has 2 arguments inside the diamonds: one for the list-object and the other for your custom viewholder.
Hope this helps.
I am working on a simple application of tabs but when I do the return I throw this error I do not really know how to solve it, I read something about importing and you put "import android.app.Fragment;" But I already have it that way. I would appreciate if I can resolve my doubt to the point of this error thanks
As I cannot comment yet I will give a full answer altho you haven't provided full details I can guess your problem.
Answer:
You probably have different imports on your Fragment class and on your Activity as from your pic on your activity you import this:
import android.app.Fragment;
and on your fragment you probably import this:
import android.support.v4.app.Fragment;
meaning its not the same class therefore your ide yells that you have a class mismatch
you should import only one of these on both your activity and fragment..
gl!
I used Android Studio wrapping feature to ensure code does not exceed 120 characters. This works fine for almost anything, but Android Studio keeps wrapping import statements which is ugly. I would instead prefer to say to Android Studio to never wrap import statements.
current:
import com.acme.projet.ui.very.long.package.name
.InstallationCoreFeatureActivity;
import com.acme.projet.ui.very.long.package.name
.InstallationSelectorActivity;
import com.acme.projet.ui.very.long.package
.InstallationOtherFeatureActivity;
wanted:
import com.acme.projet.ui.very.long.package.name.InstallationCoreFeatureActivity;
import com.acme.projet.ui.very.long.package.name.InstallationSelectorActivity;
import com.acme.projet.ui.very.long.package.InstallationOtherFeatureActivity;
Does anybody know if it's possible and if possible, how to achieve this?
Edit: To crazy reviewer/editer, the wrapping in the current code example is done on purpose.
i want import
import android.provider.Calendar;
how can i import this class in my application
I believe this is still not part of the public SDK.
You can still read the data though, I wrote an article about it: http://jimblackler.net/blog/?p=151
The class isn't public.
See http://groups.google.com/group/android-developers/browse_thread/thread/ae95c372af20f39e?pli=1
you can use the GIT file,it's free from google.in the git you will find all the classes of calender for android.