Comparison method violates its general contract

Author: AbandonedCart

Diff for: app/src/main/java/com/hiddenramblings/tagmo/amiibo/AmiiboComparator.kt

@@ -19,24 +19,12 @@ class AmiiboComparator(var settings: BrowserSettings) : Comparator<Amiibo> {
                     null == amiibo1 && null == amiibo2 -> 0
                     null == amiibo1 -> 1
                     null == amiibo2 -> -1
-                    sort == SORT.NAME.value -> {
-                        compareAmiiboName(amiibo1, amiibo2)
-                    }
-                    sort == SORT.AMIIBO_SERIES.value -> {
-                        compareAmiiboSeries(amiibo1, amiibo2)
-                    }
-                    sort == SORT.AMIIBO_TYPE.value -> {
-                        compareAmiiboType(amiibo1, amiibo2)
-                    }
-                    sort == SORT.GAME_SERIES.value -> {
-                        compareGameSeries(amiibo1, amiibo2)
-                    }
-                    sort == SORT.CHARACTER.value -> {
-                        compareCharacter(amiibo1, amiibo2)
-                    }
-                    else -> {
-                        amiibo1.compareTo(amiibo2)
-                    }
+                    sort == SORT.NAME.value -> compareAmiiboName(amiibo1, amiibo2)
+                    sort == SORT.AMIIBO_SERIES.value -> compareAmiiboSeries(amiibo1, amiibo2)
+                    sort == SORT.AMIIBO_TYPE.value -> compareAmiiboType(amiibo1, amiibo2)
+                    sort == SORT.GAME_SERIES.value -> compareGameSeries(amiibo1, amiibo2)
+                    sort == SORT.CHARACTER.value -> compareCharacter(amiibo1, amiibo2)
+                    else -> 0
                 }
             }
             if (value == 0) value = compareAmiiboId(amiiboId1, amiiboId2)
@@ -52,18 +40,9 @@ class AmiiboComparator(var settings: BrowserSettings) : Comparator<Amiibo> {
         val name1 = amiibo1.name
         val name2 = amiibo2.name
         return when {
-            null == name1 && null == name2 -> {
-                0
-            }
-
-            null == name1 -> {
-                1
-            }
-
-            null == name2 -> {
-                -1
-            }
-
+            null == name1 && null == name2 -> 0
+            null == name1 -> 1
+            null == name2 -> -1
             else -> name1.compareTo(name2)
         }
     }
@@ -72,18 +51,9 @@ class AmiiboComparator(var settings: BrowserSettings) : Comparator<Amiibo> {
         val amiiboSeries1 = amiibo1.amiiboSeries
         val amiiboSeries2 = amiibo2.amiiboSeries
         return when {
-            null == amiiboSeries1 && null == amiiboSeries2 -> {
-                0
-            }
-
-            null == amiiboSeries1 -> {
-                1
-            }
-
-            null == amiiboSeries2 -> {
-                -1
-            }
-
+            null == amiiboSeries1 && null == amiiboSeries2 -> 0
+            null == amiiboSeries1 -> 1
+            null == amiiboSeries2 -> -1
             else -> amiiboSeries1.compareTo(amiiboSeries2)
         }
     }
@@ -92,18 +62,9 @@ class AmiiboComparator(var settings: BrowserSettings) : Comparator<Amiibo> {
         val amiiboType1 = amiibo1.amiiboType
         val amiiboType2 = amiibo2.amiiboType
         return when {
-            null == amiiboType1 && null == amiiboType2 -> {
-                0
-            }
-
-            null == amiiboType1 -> {
-                1
-            }
-
-            null == amiiboType2 -> {
-                -1
-            }
-
+            null == amiiboType1 && null == amiiboType2 -> 0
+            null == amiiboType1 -> 1
+            null == amiiboType2 -> -1
             else -> amiiboType1.compareTo(amiiboType2)
         }
     }
@@ -112,18 +73,9 @@ class AmiiboComparator(var settings: BrowserSettings) : Comparator<Amiibo> {
         val gameSeries1 = amiibo1.gameSeries
         val gameSeries2 = amiibo2.gameSeries
         return when {
-            null == gameSeries1 && null == gameSeries2 -> {
-                0
-            }
-
-            null == gameSeries1 -> {
-                1
-            }
-
-            null == gameSeries2 -> {
-                -1
-            }
-
+            null == gameSeries1 && null == gameSeries2 -> 0
+            null == gameSeries1 -> 1
+            null == gameSeries2 -> -1
             else -> gameSeries1.compareTo(gameSeries2)
         }
     }
@@ -132,18 +84,9 @@ class AmiiboComparator(var settings: BrowserSettings) : Comparator<Amiibo> {
         val character1 = amiibo1.character
         val character2 = amiibo2.character
         return when {
-            null == character1 && null == character2 -> {
-                0
-            }
-
-            null == character1 -> {
-                1
-            }
-
-            null == character2 -> {
-                -1
-            }
-
+            null == character1 && null == character2 -> 0
+            null == character1 -> 1
+            null == character2 -> -1
             else -> character1.compareTo(character2)
         }
     }

Diff for: app/src/main/java/com/hiddenramblings/tagmo/fragment/SettingsFragment.kt

@@ -497,7 +497,7 @@ class SettingsFragment : PreferenceFragmentCompat() {
                     override fun onResults(result: String?, isRawJSON: Boolean) {
                         result?.let {
                             val amiiboManager = if (isRawJSON) parse(it) else parseAmiiboAPI(it)
-                            saveDatabase(amiiboManager, requireContext().applicationContext)
+                            saveDatabase(amiiboManager, TagMo.appContext)
                             CoroutineScope(Dispatchers.Main).launch {
                                 if (syncMessage.isShown) syncMessage.dismiss()
                                 buildSnackbar(