Fixed issue with NullPointerException with addOnTutorialPageChangeListener() called before onCreate()

Author: ValeryGes

CHANGELOG.md

@@ -6,6 +6,7 @@
 
 Version | Changes
 ---     | ---
+v.1.0.8 | Fixed issue with NullPointerException with addOnTutorialPageChangeListener() called before onCreate()
 v.1.0.7 | <ul><li>Fixed import for SupportTutorialFragment</li><li>Updated versions of dependencies</li></ul>
 v.1.0.6 | <ul><li>Added new simple way of creation of tutorial</li><li>Fixed memory leaks issues</li><li>Updated default sizes of page indicator's elements</li><li>Updated default colors of page indicator</li><li>Updated versions of dependencies</li><li>Removed unused or unnecessary methods</li></ul>
 v.1.0.5 | <ul><li>Fixed NullPointerException & IndexOutOfBoundsException inside ViewPager.</li><li>Added SlidingTutorialViewPager</li></ul>

gradle.properties

@@ -1,5 +1,5 @@
-VERSION_NAME=1.0.7
-VERSION_CODE=17
+VERSION_NAME=1.0.8
+VERSION_CODE=18
 GROUP=com.cleveroad
 
 POM_DESCRIPTION=Sliding tutorial is simple library that help other developers easy create great tutotial

lib/build.gradle

@@ -7,8 +7,8 @@ android {
     defaultConfig {
         minSdkVersion 14
         targetSdkVersion 25
-        versionCode 17
-        versionName "1.0.7"
+        versionCode 18
+        versionName "1.0.8"
     }
     buildTypes {
         release {

lib/src/main/java/com/cleveroad/slidingtutorial/TutorialFragment.java

@@ -108,6 +108,8 @@ public int getSeparatorResId() {
         }
     };
 
+
+
     /**
      * Create new {@link TutorialOptions.Builder} instance.
      *
@@ -123,11 +125,14 @@ public static TutorialFragment newInstance(@NonNull TutorialOptions tutorialOpti
         return new TutorialFragmentImpl(tutorialOptions);
     }
 
+    public TutorialFragment() {
+        mTutorial = new TutorialImpl<>(mInternalFragment);
+    }
+
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setRetainInstance(true);
-        mTutorial = new TutorialImpl<>(mInternalFragment);
     }
 
     @Override

lib/src/main/java/com/cleveroad/slidingtutorial/TutorialSupportFragment.java

@@ -119,11 +119,14 @@ public static TutorialSupportFragment newInstance(@NonNull TutorialOptions tutor
         return new TutorialSupportFragmentImpl(tutorialOptions);
     }
 
+    public TutorialSupportFragment() {
+        mTutorial = new TutorialImpl<>(mInternalFragment);
+    }
+
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setRetainInstance(true);
-        mTutorial = new TutorialImpl<>(mInternalFragment);
     }
 
     @Override