Kotlin | All Algorithms implemented in Kotlin | RecyclerView library

let returns the result of last expression inside it, in this case the value of builder.create(), a non-nullable AlertDialog.

Since you use ?.let, if activity is null, let won't be called, and you will effectively have null ?: throw....

builder.create() never returns null, so this throw expression is only reached when activity is null, so the error message doesn't make sense.

The version ID value inside your string appears to be surrounded with double quotes. Also, I suggest making the decimal portion optional, in case some versions might not have a minor version component:

Upgrade your dagger-hilt dependencies to the same version.

Your project's root gradle file

classpath "com.google.dagger:hilt-android-gradle-plugin:2.31.2-alpha"

Your app level gradle file

implementation "com.google.dagger:hilt-android:2.31.2-alpha"

kapt "com.google.dagger:hilt-android-compiler:2.31.2-alpha"

This is exactly the reason why coroutines were invented and how they differ from threaded concurrency. Coroutines don't block, but suspend (well, they can do both). And "suspend" isn't just another name for "block". When they suspend (e.g. by invoking join()), they effectively free the thread that runs them, so it can do something else somewhere else. And yes, it sounds like something that is technically impossible, because we are in the middle of executing the code of some function and we have to wait there, but well... welcome to coroutines :-)

You can think of it as the function is being cut into two parts: before join() and after it. First part schedules the background operation and immediately returns. When background operation finishes, it schedules the second part on the main thread. This is not how coroutines works internally (functions aren't really cut, they create continuations), but this is how you can easily imagine them working if you are familiar with executors or event loops.

delay() is also a suspending function, so it frees the thread running it and schedules execution of the code below it after a specified duration.

I'm leaving this question up in case anyone else ever gets stuck in my situation, but the code works as it is meant to, I just committed a folly.

I didn't account for height changes with asynchronous image loading and as such, the list would not be at its saved position upon composable navigation, due to the list state being smaller than the screen height on returning to the composable.

However, If the images were given static containers to load into to that don't change their size, then upon back navigation, the composable would correctly display the saved list state.

You're calling findViewById on your current Activity, which doesn't contain R.id.pizza_selection. Therefore I suspect you'll see

val pizzaDropdown = findViewById(R.id.pizzaSelection)

return null.

Try something like this:

You need to use the "remember" keyword for the recomposition to happen each time, as explained here: https://foso.github.io/Jetpack-Compose-Playground/general/state/

In short, your composable would look like this:

Make Sure "http://" is in your URL Address .

1. change from localhost to your ip
2. add http://

http://192.168.43.49:3000/user/

I faced same issue, it happens in Android, but works well in IOS. I guess this issue about Flipper Network.

For while, I commented

initializeFlipper(this, getReactNativeHost().getReactInstanceManager())

in this file /android/app/src/main/java/com/{your_project}/MainApplication.java

Whoever is still struggling with this issue. it's happening because of Flipper network plugin. I disabled it and things work just fine.

My workaround to make this work is commenting out line number 43

The response from the mapbox API is not DirectionsRoute. It is DirectionsResponse, a structure that looks like this: