Add MainActivity and add error message subscription

Author: enginebai

app/src/androidTest/java/com/enginebai/project/base/ExampleInstrumentedTest.kt

@@ -0,0 +1,32 @@
+package com.enginebai.project
+
+import android.os.Bundle
+import com.enginebai.base.utils.RxErrorHandler
+import com.enginebai.base.view.BaseActivity
+import io.reactivex.android.schedulers.AndroidSchedulers
+import io.reactivex.disposables.Disposable
+import org.koin.android.ext.android.inject
+import java.util.concurrent.TimeUnit
+
+class MainActivity : BaseActivity() {
+
+    private val rxErrorHandler: RxErrorHandler by inject()
+    private var rxErrorDisposable: Disposable? = null
+
+    override fun onStart() {
+        super.onStart()
+        if (null == rxErrorDisposable || false == rxErrorDisposable?.isDisposed) {
+            rxErrorDisposable = rxErrorHandler.errorMessageToDisplay
+                .filter { it.isNotBlank() }
+                .throttleFirst(2, TimeUnit.SECONDS)
+                .observeOn(AndroidSchedulers.mainThread())
+                .doOnNext {
+                    // TODO: display error message
+                }
+                .subscribe()
+                .disposeOnDestroy()
+        }
+    }
+
+    override fun getLayoutId() = R.layout.activity_main
+}

app/src/main/java/com/enginebai/project/MainActivity.kt

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+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:id="@+id/fragmentContainer"/>

app/src/main/res/layout/activity_main.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <!-- TODO: start your main layout -->
+
+</androidx.constraintlayout.widget.ConstraintLayout>