Release/0.0.4

.travis.yml

@@ -1,15 +1,36 @@
 language: android
+
+jdk:
+- oraclejdk8
+
 android:
   components:
   - tools
+  - tools
   - platform-tools
-  - build-tools-24.0.2
+  - build-tools-24.0.3
   - android-24
   - extra-google-google_play_services
   - extra-google-m2repository
   - extra-android-m2repository
-jdk:
-- oraclejdk8
+
+licenses:
+  - '.+'
+
+before_cache:
+  - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
+  - rm -fr $HOME/.gradle/caches/*/plugin-resolution/
+
+cache:
+  directories:
+    - $HOME/.m2
+    - $HOME/.gradle
+
+before_install:
+  - mkdir "$ANDROID_HOME/licenses" || true
+  - echo -e "\n8933bad161af4178b1185d1a37fbf41ea5269c55" > "$ANDROID_HOME/licenses/android-sdk-license"
+  - echo -e "\n84831b9409646a918e30573bab4c9c91346d8abd" > "$ANDROID_HOME/licenses/android-sdk-preview-license"
+
 notifications:
   slack:
-    secure: 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
+    secure: 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

CHANGELOG.md

@@ -0,0 +1,22 @@
+## CHANGELOG:
+
+#### 0.0.4
+- Added support for showing snackbars
+- Added support for asking permissions in custom slides
+- Fix: canMoveFurther() method works on last slide
+- Fix: Library isn't crashing when no slides provided
+
+#### 0.0.3
+- Added onFinish method
+
+#### 0.0.3
+- Added onFinish method
+
+#### 0.0.2
+- Added API for animations
+- Added Travis config file
+- Added Splash Screen for example app
+- Bug fixes
+
+#### 0.0.1
+- Initial commit with library

CONTRIBUTE.md

@@ -0,0 +1,4 @@
+## Contribute
+Feel free to contribute code to Material Intro Screen. You can do it by forking the repository via Github and sending pull request with changes.
+
+When submitting code, please make every effort to follow existing conventions and style in order to keep the code as readable as possible. Also be sure that all tests are passing. 

README.md

@@ -1,6 +1,7 @@
 # Android Material Intro Screen
  [ ![Download](https://api.bintray.com/packages/tangoagency/maven/material-intro-screen/images/download.svg) ](https://bintray.com/tangoagency/maven/material-intro-screen/_latestVersion)
 [![Build Status](https://travis-ci.org/TangoAgency/material-intro-screen.svg?branch=master)](https://travis-ci.org/TangoAgency/material-intro-screen)
+[![Android Arsenal Material Intro Screen](https://img.shields.io/badge/Android%20Arsenal-Material--Intro--Screen-green.svg?style=true)](http://android-arsenal.com/details/1/4368)
 
 Material intro screen is inspired by [Material Intro] and developed with love from scratch. I decided to rewrite completely almost all features in order to make Android intro screen easy to use for everyone and extensible as possible.
 ## Features
@@ -53,7 +54,7 @@ public class IntroActivity extends MaterialIntroActivity
                 new MessageButtonBehaviour(new View.OnClickListener() {
                     @Override
                     public void onClick(View v) {
-                        Toast.makeText(IntroActivity.this, "We provide solutions to make you love your work", Toast.LENGTH_SHORT).show();
+                        showMessage("We provide solutions to make you love your work");
                     }
                 }, "Work with love"));
 }
@@ -73,7 +74,7 @@ public class IntroActivity extends MaterialIntroActivity
 
 You can set enter, default and exit translation for every view in intro activity. To achive this you need to get translation wrapper for chosen view (for example: ```getNextButtonTranslationWrapper()```) and set there new class which will implement ```IViewTranslation```
 ```java
-getNextButtonTranslationWrapper()
+getBackButtonTranslationWrapper()
                 .setEnterTranslation(new IViewTranslation() {
                     @Override
                     public void translate(View view, @FloatRange(from = 0, to = 1.0) float percentage) {
@@ -117,6 +118,21 @@ All features which are not available in simple Slide Fragment are shown here: [C
  - [InkPageIndicator.java] by [@NickButcher]
  - Images used to create sample app are from [freepik]
 
+## Getting Help
+
+To report a specific problem or feature request, [open a new issue on Github](https://github.com/TangoAgency/material-intro-screen/issues/new).
+
+## Company
+
+[![Facebook](https://github.com/TangoAgency/material-intro-screen/blob/master/images/facebook.png)](https://www.facebook.com/TangoDigitalAgency)     [![Twitter](https://github.com/TangoAgency/material-intro-screen/blob/master/images/twitter.png)](https://twitter.com/Tango_Agency)     [![LinkedIn](https://github.com/TangoAgency/material-intro-screen/blob/master/images/linkedin.png)](https://www.linkedin.com/company/tango-digital-agency)
+
+[Here](https://github.com/TangoAgency/) you can see open source work developed by Tango Agency.
+
+Whether you're searching for a new partner or trusted team for creating your new great product we are always ready to start work with you. 
+
+You can contact us via contact@tango.agency.
+Thanks in advance.
+
 [Custom Slide]: <https://github.com/TangoAgency/material-intro-screen/blob/master/app/src/main/java/agency/tango/materialintro/CustomSlide.java>
 [Material Intro]: <https://github.com/HeinrichReimer/material-intro/tree/master/library/src/main/java/com/heinrichreimersoftware/materialintro/view/parallax>
 [@HeinrichReimer]: <https://github.com/HeinrichReimer>

app/src/main/java/agency/tango/materialintro/IntroActivity.java

@@ -18,7 +18,7 @@ protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         enableLastSlideAlphaExitTransition(true);
 
-        getNextButtonTranslationWrapper()
+        getBackButtonTranslationWrapper()
                 .setEnterTranslation(new IViewTranslation() {
                     @Override
                     public void translate(View view, @FloatRange(from = 0, to = 1.0) float percentage) {
@@ -36,7 +36,7 @@ public void translate(View view, @FloatRange(from = 0, to = 1.0) float percentag
                 new MessageButtonBehaviour(new View.OnClickListener() {
                     @Override
                     public void onClick(View v) {
-                        Toast.makeText(IntroActivity.this, "We provide solutions to make you love your work", Toast.LENGTH_SHORT).show();
+                        showMessage("We provide solutions to make you love your work");
                     }
                 }, "Work with love"));
 
@@ -61,7 +61,7 @@ public void onClick(View v) {
                 new MessageButtonBehaviour(new View.OnClickListener() {
                     @Override
                     public void onClick(View v) {
-                        Toast.makeText(IntroActivity.this, "Try us", Toast.LENGTH_SHORT).show();
+                        showMessage("Try us!");
                     }
                 }, "Tools"));
 

app/src/main/java/agency/tango/materialintro/MainActivity.java

@@ -19,7 +19,7 @@ public void onCreate(Bundle savedInstanceState) {
             @Override
             public void onClick(View v) {
                 Intent intent = new Intent(MainActivity.this, IntroActivity.class);
-                MainActivity.this.startActivity(intent);
+                startActivity(intent);
             }
         });
     }

build.gradle

@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.0-rc2'
+        classpath 'com.android.tools.build:gradle:2.2.1'
 		classpath 'com.novoda:bintray-release:0.3.4'
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files

material-intro-screen/src/main/java/agency/tango/materialintroscreen/MaterialIntroActivity.java

@@ -32,7 +32,6 @@
 import agency.tango.materialintroscreen.listeners.MessageButtonBehaviourOnPageSelected;
 import agency.tango.materialintroscreen.listeners.SwipeStateTouchListener;
 import agency.tango.materialintroscreen.listeners.ViewBehavioursOnPageChangeListener;
-import agency.tango.materialintroscreen.listeners.clickListeners.FinishScreenClickListener;
 import agency.tango.materialintroscreen.listeners.clickListeners.PermissionNotGrantedClickListener;
 import agency.tango.materialintroscreen.listeners.scrollListeners.ParallaxScrollListener;
 import agency.tango.materialintroscreen.widgets.InkPageIndicator;
@@ -95,16 +94,20 @@ protected void onCreate(@Nullable Bundle savedInstanceState) {
         initOnPageChangeListeners();
 
         permissionNotGrantedClickListener = new PermissionNotGrantedClickListener(this, nextButtonTranslationWrapper);
-        finishScreenClickListener = new FinishScreenClickListener(this);
+        finishScreenClickListener = new FinishScreenClickListener();
 
         setBackButtonVisible();
 
         viewPager.post(new Runnable() {
             @Override
             public void run() {
-                int currentItem = viewPager.getCurrentItem();
-                messageButtonBehaviourOnPageSelected.pageSelected(currentItem);
-                nextButtonBehaviour(currentItem, adapter.getItem(currentItem));
+                if (adapter.slidesCount() == 0) {
+                    finish();
+                } else {
+                    int currentItem = viewPager.getCurrentItem();
+                    messageButtonBehaviourOnPageSelected.pageSelected(currentItem);
+                    nextButtonBehaviour(currentItem, adapter.getItem(currentItem));
+                }
             }
         });
     }
@@ -113,7 +116,7 @@ public void run() {
     public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
         SlideFragment fragment = adapter.getItem(viewPager.getCurrentItem());
         boolean hasPermissionToGrant = fragment.hasNeededPermissionsToGrant();
-        if (hasPermissionToGrant == false) {
+        if (!hasPermissionToGrant) {
             viewPager.setAllowedSwipeDirection(SwipeableViewPager.SwipeDirection.all);
             nextButtonBehaviour(viewPager.getCurrentItem(), fragment);
             messageButtonBehaviourOnPageSelected.pageSelected(viewPager.getCurrentItem());
@@ -170,7 +173,7 @@ public void pageScrolled(final int position, float offset) {
                         viewPager.post(new Runnable() {
                             @Override
                             public void run() {
-                                if (adapter.getItem(position).hasNeededPermissionsToGrant() || adapter.getItem(position).canMoveFurther() == false) {
+                                if (adapter.getItem(position).hasNeededPermissionsToGrant() || !adapter.getItem(position).canMoveFurther()) {
                                     viewPager.setCurrentItem(position);
                                     pageIndicator.clearJoiningFractions();
                                 }
@@ -237,6 +240,7 @@ private int color(@ColorRes int color) {
      *
      * @param slideFragment Fragment to add
      */
+    @SuppressWarnings("unused")
     public void addSlide(SlideFragment slideFragment) {
         adapter.addItem(slideFragment);
     }
@@ -247,6 +251,7 @@ public void addSlide(SlideFragment slideFragment) {
      * @param slideFragment          Fragment to add
      * @param messageButtonBehaviour Add behaviour for message button
      */
+    @SuppressWarnings("unused")
     public void addSlide(SlideFragment slideFragment, MessageButtonBehaviour messageButtonBehaviour) {
         adapter.addItem(slideFragment);
         messageButtonBehaviours.put(adapter.getLastItemPosition(), messageButtonBehaviour);
@@ -263,8 +268,8 @@ public void setSkipButtonVisible() {
         skipButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                for (int position = viewPager.getCurrentItem(); position < adapter.getCalculatedCount(); position++) {
-                    if (adapter.getItem(position).canMoveFurther() == false) {
+                for (int position = viewPager.getCurrentItem(); position < adapter.slidesCount(); position++) {
+                    if (!adapter.getItem(position).canMoveFurther()) {
                         viewPager.setCurrentItem(position);
                         showError(adapter.getItem(position).cantMoveFurtherErrorMessage());
                         return;
@@ -313,6 +318,7 @@ public ViewTranslationWrapper getNextButtonTranslationWrapper() {
      *
      * @return ViewTranslationWrapper
      */
+    @SuppressWarnings("unused")
     public ViewTranslationWrapper getBackButtonTranslationWrapper() {
         return backButtonTranslationWrapper;
     }
@@ -322,6 +328,7 @@ public ViewTranslationWrapper getBackButtonTranslationWrapper() {
      *
      * @return ViewTranslationWrapper
      */
+    @SuppressWarnings("unused")
     public ViewTranslationWrapper getPageIndicatorTranslationWrapper() {
         return pageIndicatorTranslationWrapper;
     }
@@ -331,6 +338,7 @@ public ViewTranslationWrapper getPageIndicatorTranslationWrapper() {
      *
      * @return ViewTranslationWrapper
      */
+    @SuppressWarnings("unused")
     public ViewTranslationWrapper getViewPagerTranslationWrapper() {
         return viewPagerTranslationWrapper;
     }
@@ -340,6 +348,7 @@ public ViewTranslationWrapper getViewPagerTranslationWrapper() {
      *
      * @return ViewTranslationWrapper
      */
+    @SuppressWarnings("unused")
     public ViewTranslationWrapper getSkipButtonTranslationWrapper() {
         return skipButtonTranslationWrapper;
     }
@@ -352,6 +361,15 @@ public void enableLastSlideAlphaExitTransition(boolean enableAlphaExitTransition
         adapter.addEmptySlide(new LastEmptySlideFragment());
     }
 
+    /**
+     * Show snackbar message
+     *
+     * @param message Message which will be visible to user
+     */
+    public void showMessage(String message) {
+        showError(message);
+    }
+
     /**
      * Override to execute this method on finish intro activity
      */
@@ -392,4 +410,18 @@ private void tintButtons(ColorStateList color) {
             ViewCompat.setBackgroundTintList(skipButton, color);
         }
     }
+
+    private class FinishScreenClickListener implements View.OnClickListener {
+        @Override
+        public void onClick(View v) {
+            SlideFragment slideFragment = adapter.getItem(adapter.getLastItemPosition());
+            if (!slideFragment.canMoveFurther()) {
+                nextButtonTranslationWrapper.error();
+                showError(slideFragment.cantMoveFurtherErrorMessage());
+            } else {
+                onFinish();
+                finish();
+            }
+        }
+    }
 }

material-intro-screen/src/main/java/agency/tango/materialintroscreen/MessageButtonBehaviour.java

@@ -2,6 +2,7 @@
 
 import android.view.View;
 
+@SuppressWarnings("unused")
 public class MessageButtonBehaviour {
     private View.OnClickListener clickListener;
     private String messageButtonText;

material-intro-screen/src/main/java/agency/tango/materialintroscreen/MoveUpBehaviour.java

@@ -7,6 +7,7 @@
 import android.view.View;
 import android.widget.LinearLayout;
 
+@SuppressWarnings("unused")
 public class MoveUpBehaviour extends CoordinatorLayout.Behavior<LinearLayout> {
     public MoveUpBehaviour(Context context, AttributeSet attrs) {
         super(context, attrs);

material-intro-screen/src/main/java/agency/tango/materialintroscreen/SlideFragment.java

@@ -56,7 +56,7 @@ public static SlideFragment createInstance(SlideFragmentBuilder builder) {
     }
 
     public static boolean isNotNullOrEmpty(String string) {
-        return string != null && string.isEmpty() == false;
+        return string != null && !string.isEmpty();
     }
 
     @Nullable
@@ -93,7 +93,7 @@ public int buttonsColor() {
 
     public boolean hasAnyPermissionsToGrant() {
         boolean hasPermissionToGrant = hasPermissionsToGrant(neededPermissions);
-        if (hasPermissionToGrant == false) {
+        if (!hasPermissionToGrant) {
             hasPermissionToGrant = hasPermissionsToGrant(possiblePermissions);
         }
         return hasPermissionToGrant;
@@ -144,14 +144,14 @@ public void askForPermissions() {
         }
 
         String[] permissionsToGrant = removeEmptyAndNullStrings(notGrantedPermissions);
-        ActivityCompat.requestPermissions(this.getActivity(), permissionsToGrant, PERMISSIONS_REQUEST_CODE);
+        ActivityCompat.requestPermissions(getActivity(), permissionsToGrant, PERMISSIONS_REQUEST_CODE);
     }
 
     private boolean hasPermissionsToGrant(String[] permissions) {
         if (permissions != null) {
-            for (int i = 0; i < permissions.length; i++) {
-                if (isNotNullOrEmpty(permissions[i])) {
-                    if (ContextCompat.checkSelfPermission(getContext(), permissions[i]) != PackageManager.PERMISSION_GRANTED) {
+            for (String permission : permissions) {
+                if (isNotNullOrEmpty(permission)) {
+                    if (ContextCompat.checkSelfPermission(getContext(), permission) != PackageManager.PERMISSION_GRANTED) {
                         return true;
                     }
                 }
@@ -160,6 +160,7 @@ private boolean hasPermissionsToGrant(String[] permissions) {
         return false;
     }
 
+    @SuppressWarnings("SuspiciousMethodCalls")
     private String[] removeEmptyAndNullStrings(final ArrayList<String> permissions) {
         List<String> list = new ArrayList<>(permissions);
         list.removeAll(Collections.singleton(null));

material-intro-screen/src/main/java/agency/tango/materialintroscreen/SlideFragmentBuilder.java

@@ -3,6 +3,7 @@
 import android.support.annotation.ColorRes;
 import android.support.annotation.DrawableRes;
 
+@SuppressWarnings({"unused", "WeakerAccess"})
 public class SlideFragmentBuilder {
     int backgroundColor;
     int buttonsColor;