fixed issue

Author: sergey_polohach_cr

CHANGELOG.md

@@ -6,6 +6,7 @@
 
 Version | Changes
 ---     | ---
+v.1.0.9 | <ul><li>Fixed issue #65 https://github.com/Cleveroad/SlidingTutorial-Android/issues/65</li><li>Scrolling in one direction. Added flag for rollback?</li></ul>
 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>

README.md

@@ -28,6 +28,14 @@ All you need to do is:
 
 ## Full Documentation
 
+## Setup
+To include this library to your project add dependency in **build.gradle** file:
+```groovy
+    dependencies {
+        implementation "com.cleveroad:slidingtutorial:1.0.9"
+    }
+```
+
 [Quick Start]
 
 * [Configure your tutorial with TutorialOptions]

build.gradle

@@ -1,11 +1,18 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
+    ext.junit_version = '4.12'
+    ext.support_version = '28.0.0'
+    ext.constraint_layout_version = '1.1.3'
+    ext.leakcanary_version = '1.5.4'
+    ext.tools_build_gradle_version = '3.1.3'
+
     repositories {
         jcenter()
+        google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.0'
+        classpath "com.android.tools.build:gradle:$tools_build_gradle_version"
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
     }
@@ -14,5 +21,6 @@ buildscript {
 allprojects {
     repositories {
         jcenter()
+        google()
     }
-}
+}

gradle.properties

@@ -1,5 +1,5 @@
-VERSION_NAME=1.0.8
-VERSION_CODE=18
+VERSION_NAME=1.0.9
+VERSION_CODE=19
 GROUP=com.cleveroad
 
 POM_DESCRIPTION=Sliding tutorial is simple library that help other developers easy create great tutotial

gradle/wrapper/gradle-wrapper.jar

@@ -0,0 +1,6 @@
+#Wed Nov 14 13:57:01 EET 2018
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-all.zip

gradle/wrapper/gradle-wrapper.properties

@@ -1,14 +1,13 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.2"
+    compileSdkVersion 28
 
     defaultConfig {
-        minSdkVersion 14
-        targetSdkVersion 25
-        versionCode 18
-        versionName "1.0.8"
+        minSdkVersion 15
+        targetSdkVersion 28
+        versionCode 19
+        versionName "1.0.9"
     }
     buildTypes {
         release {
@@ -21,8 +20,10 @@ android {
 }
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile 'com.android.support:support-v4:25.3.1'
+    final support_version = '28.0.0'
+
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation "com.android.support:support-v4:$support_version"
 }
 
 apply from: './gradle-mvn-push.gradle'

lib/build.gradle

@@ -1,2 +1 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.cleveroad.slidingtutorial"/>
+<manifest package="com.cleveroad.slidingtutorial" />

lib/src/main/AndroidManifest.xml

@@ -29,6 +29,7 @@
 import android.app.FragmentTransaction;
 import android.os.Build;
 import android.os.Parcelable;
+import android.support.annotation.NonNull;
 import android.support.v4.view.PagerAdapter;
 import android.util.Log;
 import android.view.View;
@@ -71,16 +72,17 @@ abstract class FragmentPagerAdapter extends PagerAdapter {
     public abstract Fragment getItem(int position);
 
     @Override
-    public void startUpdate(ViewGroup container) {
+    public void startUpdate(@NonNull ViewGroup container) {
         if (container.getId() == View.NO_ID) {
             throw new IllegalStateException("ViewPager with adapter " + this
                     + " requires a view id");
         }
     }
 
+    @NonNull
     @SuppressLint("CommitTransaction")
     @Override
-    public Object instantiateItem(ViewGroup container, int position) {
+    public Object instantiateItem(@NonNull ViewGroup container, int position) {
         if (mCurTransaction == null) {
             mCurTransaction = mFragmentManager.beginTransaction();
         }
@@ -115,7 +117,7 @@ private void setUserVisibilityHint(Fragment fragment, boolean isVisible) {
 
     @SuppressLint("CommitTransaction")
     @Override
-    public void destroyItem(ViewGroup container, int position, Object object) {
+    public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
         if (mCurTransaction == null) {
             mCurTransaction = mFragmentManager.beginTransaction();
         }
@@ -125,31 +127,29 @@ public void destroyItem(ViewGroup container, int position, Object object) {
     }
 
     @Override
-    public void setPrimaryItem(ViewGroup container, int position, Object object) {
+    public void setPrimaryItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
         Fragment fragment = (Fragment) object;
         if (fragment != mCurrentPrimaryItem) {
             if (mCurrentPrimaryItem != null) {
                 mCurrentPrimaryItem.setMenuVisibility(false);
                 setUserVisibilityHint(mCurrentPrimaryItem, false);
             }
-            if (fragment != null) {
-                fragment.setMenuVisibility(true);
-                setUserVisibilityHint(fragment, true);
-            }
+            fragment.setMenuVisibility(true);
+            setUserVisibilityHint(fragment, true);
             mCurrentPrimaryItem = fragment;
         }
     }
 
     @Override
-    public void finishUpdate(ViewGroup container) {
+    public void finishUpdate(@NonNull ViewGroup container) {
         if (mCurTransaction != null) {
             mCurTransaction.commitAllowingStateLoss();
             mCurTransaction = null;
         }
     }
 
     @Override
-    public boolean isViewFromObject(View view, Object object) {
+    public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {
         return ((Fragment) object).getView() == view;
     }
 

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

@@ -35,5 +35,4 @@ public interface OnTutorialPageChangeListener {
      * @param position Position index of the new selected page.
      */
     void onPageChanged(int position);
-
 }