Does not launch comparison report with less than 2 groups

app/src/main/java/net/pokeranalytics/android/ui/fragment/ReportsFragment.kt

@@ -4,6 +4,7 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import android.widget.Toast
 import androidx.recyclerview.widget.LinearLayoutManager
 import io.realm.Realm
 import kotlinx.android.synthetic.main.fragment_stats.*
@@ -14,6 +15,7 @@ import net.pokeranalytics.android.R
 import net.pokeranalytics.android.calculus.Calculator
 import net.pokeranalytics.android.calculus.Stat
 import net.pokeranalytics.android.model.Criteria
+import net.pokeranalytics.android.model.combined
 import net.pokeranalytics.android.ui.activity.ReportDetailsActivity
 import net.pokeranalytics.android.ui.adapter.RowRepresentableAdapter
 import net.pokeranalytics.android.ui.adapter.RowRepresentableDelegate
@@ -105,6 +107,11 @@ class ReportsFragment : PokerAnalyticsFragment(), StaticRowRepresentableDataSour
 	 */
 	private fun launchComputation(criteria: List<Criteria>, reportName: String) {
 
+		if (criteria.combined().size < 2) {
+			Toast.makeText(context, R.string.less_then_2_values_for_comparison, Toast.LENGTH_LONG).show()
+			return
+		}
+
 		showLoader()
 
 		GlobalScope.launch {
@@ -114,6 +121,7 @@ class ReportsFragment : PokerAnalyticsFragment(), StaticRowRepresentableDataSour
 
 			val requiredStats: List<Stat> = listOf(Stat.NET_RESULT)
 			val options = Calculator.Options(evolutionValues = Calculator.Options.EvolutionValues.STANDARD, stats = requiredStats)
+
 			val report = Calculator.computeStatsWithComparators(realm, criteria = criteria, options = options)
 
 			Timber.d("launchComputation: ${System.currentTimeMillis() - startDate.time}ms")
@@ -124,6 +132,7 @@ class ReportsFragment : PokerAnalyticsFragment(), StaticRowRepresentableDataSour
 					ReportDetailsActivity.newInstance(requireContext(), report, reportName)
 				}
 			}
+			realm.close()
 		}
 	}
 

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

@@ -11,8 +11,8 @@
 		android:background="@color/green_header"
 		android:layout_width="0dp"
 		android:layout_height="0dp"
-		app:layout_constraintBottom_toTopOf="@+id/counter"
+		app:layout_constraintBottom_toBottomOf="@+id/stat1Value"
-		android:layout_marginBottom="4dp"
+		android:layout_marginBottom="0dp"
 		app:layout_constraintEnd_toEndOf="parent"
 		app:layout_constraintStart_toStartOf="parent"
 		app:layout_constraintTop_toTopOf="parent" />

app/src/main/res/values/strings.xml

@@ -9,6 +9,7 @@
     <string name="variant">Variant</string>
     <string name="line">Line</string>
     <string name="initial_value">Initial Value</string>
+    <string name="less_then_2_values_for_comparison">There is less than two values to compare! Please change your habits :)</string>
     <!--<string name="session_missing_end_date">Please set the end date for the session</string>-->
     <!--<string name="default_error_message">Sorry, something went wrong...please contact us!</string>-->