1 files changed, 37 insertions, 0 deletions
diff --git a/src/android/app/src/main/java/org/yuzu/yuzu_emu/utils/PreferenceUtil.kt b/src/android/app/src/main/java/org/yuzu/yuzu_emu/utils/PreferenceUtil.kt
new file mode 100644
index 000000000..a233ba25c
--- /dev/null
+++ b/src/android/app/src/main/java/org/yuzu/yuzu_emu/utils/PreferenceUtil.kt
@@ -0,0 +1,37 @@
+// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package org.yuzu.yuzu_emu.utils
+
+import android.content.SharedPreferences
+
+object PreferenceUtil {
+    /**
+     * Retrieves a shared preference value and then deletes the value in storage.
+     * @param key Associated key for the value in this preferences instance
+     * @return Typed value associated with [key]. Null if no such key exists.
+     */
+    inline fun <reified T> SharedPreferences.migratePreference(key: String): T? {
+        if (!this.contains(key)) {
+            return null
+        }
+
+        val value: Any = when (T::class) {
+            String::class -> this.getString(key, "")!!
+
+            Boolean::class -> this.getBoolean(key, false)
+
+            Int::class -> this.getInt(key, 0)
+
+            Float::class -> this.getFloat(key, 0f)
+
+            Long::class -> this.getLong(key, 0)
+
+            else -> throw IllegalStateException("Tried to migrate preference with invalid type!")
+        }
+        deletePreference(key)
+        return value as T
+    }
+
+    fun SharedPreferences.deletePreference(key: String) = this.edit().remove(key).apply()
+}