HistoryBrowser: toolbar

app/src/main/AndroidManifest.xml

@@ -73,7 +73,7 @@
         <activity
             android:name=".activities.HistoryBrowseActivity"
             android:exported="false"
-            android:theme="@style/AppTheme.NoActionBar" />
+            android:theme="@style/AppTheme" />
         <!-- Receive new BG readings from other local apps -->
         <receiver
             android:name=".receivers.DataReceiver"

app/src/main/java/info/nightscout/androidaps/activities/HistoryBrowseActivity.kt

@@ -4,10 +4,14 @@ import android.annotation.SuppressLint
 import android.content.Context
 import android.os.Bundle
 import android.util.DisplayMetrics
+import android.view.Menu
+import android.view.MenuInflater
+import android.view.MenuItem
 import android.view.ViewGroup
 import android.widget.LinearLayout
 import android.widget.RelativeLayout
 import android.widget.TextView
+import androidx.core.view.MenuProvider
 import com.google.android.material.datepicker.MaterialDatePicker
 import com.jjoe64.graphview.GraphView
 import dagger.android.HasAndroidInjector
@@ -76,6 +80,10 @@ class HistoryBrowseActivity : TranslatedDaggerAppCompatActivity() {
         binding = ActivityHistorybrowseBinding.inflate(layoutInflater)
         setContentView(binding.root)
 
+        title = rh.gs(info.nightscout.plugins.R.string.nav_history_browser)
+        supportActionBar?.setDisplayHomeAsUpEnabled(true)
+        supportActionBar?.setDisplayShowHomeEnabled(true)
+
         binding.left.setOnClickListener {
             adjustTimeRange(historyBrowserData.overviewData.fromTime - T.hours(rangeToDisplay.toLong()).msecs())
             loadAll("onClickLeft")
@@ -140,6 +148,20 @@ class HistoryBrowseActivity : TranslatedDaggerAppCompatActivity() {
             historyBrowserData.overviewData.fromTime = bundle.getLong("start", 0)
             historyBrowserData.overviewData.toTime = bundle.getLong("end", 0)
         }
+        // Add menu items without overriding methods in the Activity
+        addMenuProvider(object : MenuProvider {
+            override fun onCreateMenu(menu: Menu, menuInflater: MenuInflater) {}
+
+            override fun onMenuItemSelected(menuItem: MenuItem): Boolean =
+                when (menuItem.itemId) {
+                    android.R.id.home -> {
+                        onBackPressedDispatcher.onBackPressed()
+                        true
+                    }
+
+                    else              -> false
+                }
+        })
     }
 
     override fun onPause() {