App Crashes, When The Button to Navigate to Another Screen, Is Pressed Twice in Succession

[afolabisamguy]

E FATAL EXCEPTION: main (Ask Gemini)
Process: com.alphatech.crypto, PID: 18748
java.lang.IllegalArgumentException: Key presentation.screen.ScanQrScreen:transition was used multiple times
at androidx.compose.runtime.saveable.SaveableStateHolderImpl$SaveableStateProvider$1$1.invoke(SaveableStateHolder.kt:89)
at androidx.compose.runtime.saveable.SaveableStateHolderImpl$SaveableStateProvider$1$1.invoke(SaveableStateHolder.kt:88)
at androidx.compose.runtime.DisposableEffectImpl.onRemembered(Effects.kt:83)
at androidx.compose.runtime.CompositionImpl$RememberEventDispatcher.dispatchRememberObservers(Composition.kt:1295)
at androidx.compose.runtime.CompositionImpl.applyChangesInLocked(Composition.kt:984)
at androidx.compose.runtime.CompositionImpl.applyChanges(Composition.kt:1005)
at androidx.compose.runtime.Recomposer$runRecomposeAndApplyChanges$2$1.invoke(Recomposer.kt:639)
at androidx.compose.runtime.Recomposer$runRecomposeAndApplyChanges$2$1.invoke(Recomposer.kt:551)
at androidx.compose.ui.platform.AndroidUiFrameClock$withFrameNanos$2$callback$1.doFrame(AndroidUiFrameClock.android.kt:41)
at androidx.compose.ui.platform.AndroidUiDispatcher.performFrameDispatch(AndroidUiDispatcher.android.kt:109)
at androidx.compose.ui.platform.AndroidUiDispatcher.access$performFrameDispatch(AndroidUiDispatcher.android.kt:41)
at androidx.compose.ui.platform.AndroidUiDispatcher$dispatchCallback$1.doFrame(AndroidUiDispatcher.android.kt:69)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:978)
at android.view.Choreographer.doCallbacks(Choreographer.java:804)
at android.view.Choreographer.doFrame(Choreographer.java:735)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:965)
at android.os.Handler.handleCallback(Handler.java:883)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:264)
at android.app.ActivityThread.main(ActivityThread.java:7684)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:507)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:980)
Suppressed: kotlinx.coroutines.internal.DiagnosticCoroutineContextException: [androidx.compose.runtime.PausableMonotonicFrameClock@3962b5f, androidx.compose.ui.platform.MotionDurationScaleImpl@2a199ac, StandaloneCoroutine{Cancelling}@2a90675, AndroidUiDispatcher@56d960a]

[ibraheemzulfiqar]

You can either provide a uniqueScreenKey for every screen class:

class MyScreen : Screen {
    override val key: ScreenKey = uniqueScreenKey
} 

or create some helper method to only navigate once:

public infix fun Stack<Screen>.pushOnce(item: Screen) {
    val lastScreen = lastItemOrNull

    if (lastScreen == null || lastScreen::class != item::class) {
        push(item)
    }
}

check official docs