GregKluska

fun isConnectedToTheInternet(): Boolean {
    val cm = application.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
    try {
        return cm.activeNetworkInfo.isConnected
    } catch (e: Exception) {
        Log.e(TAG, "isConnectedToTheInternet: ${e.message}", )
    }
    return false
}

GregKluska

Gist of generic classes from codingwithmitch.com

List:
- StateResource.kt
- DataState.kt
- BaseViewModel.kt

GregKluska

import androidx.lifecycle.LiveData
import retrofit2.Call
import retrofit2.CallAdapter
import retrofit2.Callback
import retrofit2.Response
import java.lang.reflect.Type
import java.util.concurrent.atomic.AtomicBoolean

class LiveDataCallAdapter<R>(private val responseType: Type) :
    CallAdapter<R, LiveData<GenericApiResponse<R>>> {

GregKluska

// Run this in the F12 javascript console in chrome
// if a redirect happens, the page will pause
// this helps because chrome's network tab's
// "preserve log" seems to technically preserve the log
// but you can't actually LOOK at it...
// also the "replay xhr" feature does not work after reload
// even if you "preserve log".

window.addEventListener("beforeunload", function() { debugger; }, false)

GregKluska

/**
 * Used as a wrapper for data that is exposed via a LiveData that represents an event.
 */
class Event<T>(private val content: T) {

    var hasBeenHandled = false
        private set // Allow external read but not write

    /**
     * Returns the content and prevents its use again.

GregKluska

import android.content.Context
import androidx.fragment.app.Fragment
import com.codingwithmitch.mviexample.ui.DataStateListener
import java.lang.ClassCastException


class ExampleFragment : Fragment() {

    lateinit var dataStateHandler: DataStateListener

GregKluska

import androidx.lifecycle.LiveData

/**
 * A LiveData class that has `null` value.
 */
class AbsentLiveData<T : Any?> private constructor(): LiveData<T>() {

    init {
        // use post instead of set since this can be created on any thread
        postValue(null)

GregKluska

import android.util.Log
import retrofit2.Response

/**
 * Copied from Architecture components google sample:
 * https://github.com/googlesamples/android-architecture-components/blob/master/GithubBrowserSample/app/src/main/java/com/android/example/github/api/ApiResponse.kt
 */
@Suppress("unused") // T is used in extending classes
sealed class GenericApiResponse<T> {