add: LICENSE, ui mode

app/src/main/java/com/stardust/scriptdroid/Pref.java

@@ -1,5 +1,6 @@
 package com.stardust.scriptdroid;
 
+import android.content.Context;
 import android.content.SharedPreferences;
 import android.preference.PreferenceManager;
 
@@ -8,10 +9,28 @@ import android.preference.PreferenceManager;
  */
 public class Pref {
 
+    private static final SharedPreferences DISPOSABLE_BOOLEAN = App.getApp().getSharedPreferences("DISPOSABLE_BOOLEAN", Context.MODE_PRIVATE);
+
     public static final String SAMPLE_SCRIPTS_COPIED = "SAMPLE_SCRIPTS_COPIED";
 
+
     public static SharedPreferences def() {
         return PreferenceManager.getDefaultSharedPreferences(App.getApp());
     }
 
+    public static boolean isFirstEnableAssistMode() {
+        return getDisposableBoolean("isFirstEnableAssistMode", true);
+    }
+
+    private static boolean getDisposableBoolean(String key, boolean defaultValue) {
+        boolean b = DISPOSABLE_BOOLEAN.getBoolean(key, defaultValue);
+        if (b == defaultValue) {
+            DISPOSABLE_BOOLEAN.edit().putBoolean(key, !defaultValue).apply();
+        }
+        return b;
+    }
+
+    public static boolean isFirstGoToAccessibilitySetting() {
+        return getDisposableBoolean("isFirstGoToAccessibilitySetting", true);
+    }
 }