[UI] Show nightly version badge in main activity.

app/src/main/java/pl/szczodrzynski/edziennik/MainActivity.kt

@@ -18,6 +18,7 @@ import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity
 import androidx.appcompat.widget.PopupMenu
 import androidx.core.graphics.ColorUtils
+import androidx.core.view.isVisible
 import androidx.lifecycle.Observer
 import androidx.navigation.NavOptions
 import com.danimahardhika.cafebar.CafeBar
@@ -294,6 +295,13 @@ class MainActivity : AppCompatActivity(), CoroutineScope {
         mainSnackbar.setCoordinator(b.navView.coordinator, b.navView.bottomBar)
         errorSnackbar.setCoordinator(b.navView.coordinator, b.navView.bottomBar)
 
+        if (BuildConfig.VERSION_NAME.contains("nightly")) {
+            b.nightlyText.isVisible = true
+            b.nightlyText.text = "Nightly\n"+BuildConfig.VERSION_NAME.substringAfterLast(".")
+        }
+        else
+            b.nightlyText.isVisible = false
+
         navLoading = true
 
         b.navView.apply {

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

@@ -32,6 +32,22 @@
 
         </pl.szczodrzynski.navlib.NavView>
 
+        <TextView
+            android:id="@+id/nightlyText"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="bottom|end"
+            android:layout_marginHorizontal="48dp"
+            android:layout_marginVertical="8dp"
+            android:background="@drawable/bg_rounded_4dp"
+            android:backgroundTint="#a0ff0000"
+            android:fontFamily="sans-serif-light"
+            android:gravity="center"
+            android:padding="4dp"
+            android:textAllCaps="true"
+            android:textSize="12sp"
+            android:textStyle="bold"
+            tools:text="Nightly\n20200503" />
     </FrameLayout>
 
-</layout>
+</layout>