71 questions
Using the following article as a reference, I am creating an Android app on kotlin.https://akira-watson.com/android/kotlin/soundpool-play.htmlWhat I want to do is create about 50 buttons and make diff...
I think the only thing I can do is initialize the unalterable properties through the primary constructor, but I'm having trouble with how to call the primary constructor using the results calculated b...
After creating and releasing one app on Android Studio, I am now trying to upload the second app from the Play Console.When I try to upload a file with the extension .aab created with Android Studio i...
Realm 2.1.1 + kotlin 1.1.3 environment.The exception RealmMigrationNeedException: Field count is more than expected always occurs during maigration.Before migration public open class TestObject():Real...
I created the settings screen using the PreferenceLibrary and kotlin, but once I close the application and reopen it, it will be reflected, but if I use it as it is, the settings will not be reflected...
I created a login function using the Android app.I use userid and password to log in.After that, after the second time, I want to automatically log in without going through the login screen and transi...
How do I check if the document exists in the Firestore?The language is Kotolin.
So I wrote a code saying that if the document of the UserID entered exists, it will return an error.However, ➀In the code, the dbError variable is returned null instead of being updated.➁If you use th...
I would like to create a Tap each item in ListView to see the details screen corresponding to the item flow in Kotlin.I don't know how to get the id of the item I tapped and give it to the detail scre...
On kotlin's command-line interpreter (kotlinc-jvm1.1.2-2), first define the function id and >> funid(x:Int)=xThen I tried to define the function applyTo10 and got an error.>>fun applyTo10(...
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