Cleanup realm instance management

app/src/main/java/net/pokeranalytics/android/calculus/bankroll/BankrollCalculator.kt

@@ -32,6 +32,8 @@ class BankrollCalculator {
 				report.addTransaction(it)
 			}
 
+			realm.close()
+
 			return report
 		}
 

app/src/main/java/net/pokeranalytics/android/ui/activity/components/PokerAnalyticsActivity.kt

@@ -21,7 +21,7 @@ open class PokerAnalyticsActivity : AppCompatActivity() {
 		const val PLAY_SERVICES_RESOLUTION_REQUEST = 2000
 	}
 
-	private val realm = Realm.getDefaultInstance()
+	private var realm: Realm? = null
 	private var permissionCallback: ((granted: Boolean) -> Unit)? = null
 
 	override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
@@ -55,14 +55,20 @@ open class PokerAnalyticsActivity : AppCompatActivity() {
 
 	override fun onDestroy() {
 		super.onDestroy()
-		realm.close()
+		this.realm?.close()
 	}
 
 	/**
 	 * Return the realm instance
 	 */
 	fun getRealm(): Realm {
-		return realm
+		this.realm?.let {
+			return it
+		} ?: run {
+			val realm = Realm.getDefaultInstance()
+			this.realm = realm
+			return realm
+		}
 	}
 
 	/**

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

@@ -6,7 +6,7 @@ import io.realm.Realm
 
 open class PokerAnalyticsFragment: Fragment() {
 
-	private lateinit var realm: Realm
+	private var realm: Realm? = null
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -15,14 +15,20 @@ open class PokerAnalyticsFragment: Fragment() {
 
     override fun onDestroyView() {
         super.onDestroyView()
-	    realm.close()
+	    this.realm?.close()
     }
 
 	/**
 	 * Get the realm instance
  	 */
 	fun getRealm(): Realm {
-		return realm
+		this.realm?.let {
+			return it
+		} ?: run {
+			val realm = Realm.getDefaultInstance()
+			this.realm = realm
+			return realm
+		}
 	}
 
 	/**

app/src/main/res/drawable/ic_outline_remove.xml

@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="24"
-    android:viewportHeight="24">
-  <path
-      android:fillColor="#FFFFFFFF"
-      android:pathData="M7,11v2h10v-2L7,11zM12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zM12,20c-4.41,0 -8,-3.59 -8,-8s3.59,-8 8,-8 8,3.59 8,8 -3.59,8 -8,8z"/>
-</vector>