material-intro
A simple material design app intro with cool animations and a fluent API.
Very inspired by Google's app intros.
Demo:
A demo app is available on Google Play:
Screenshots:
Simple slide | Custom slide | Fade effect | Permission request |
---|---|---|---|
SimpleSlide.java | FragmentSlide.java | IntroActivity.java | SimpleSlide.java |
Features:
- Material design ( check the docs)
- Easy customization
- Predefined slide layouts
- Custom slides
- Autoplay
- Parallax slides
- Fluent API
Table of Contents
- Setup
- Slides
- Customization
- Navigation
- Tips & Tricks
- Apps using this library
- Changes
- Open-source libraries
- License
Setup:
Gradle Dependency:
material-intro is available on jitpack.io.
Add this in your root build.gradle
file ( not your module build.gradle
file):
allprojects {
repositories {
maven {
url 'https://jitpack.io'
}
}
}
Add this in your module build.gradle
file:
android {
...
dataBinding {
enabled = true
}
}
dependencies {
compile 'com.heinrichreimersoftware:material-intro:1.6.2'
}
Requirements:
The activity must extend IntroActivity
and have a theme extending @style/Theme.Intro
:
public class MainIntroActivity extends IntroActivity{
@Override protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
// Add slides, edit configuration...
}
}
<manifest ...>
<application ...>
<activity android:name=".MainIntroActivity"
android:theme="@style/Theme.Intro"/>
</application> </manifest>
(Unless mentioned otherwise all of the following method calls should go in the activity's onCreate()
.)
Slides:
material-intro has fluent style builders for both a simple text/image slide, as seen in Google's apps, and for slides featuring a custom Fragment
or layout resource.
Feel free to submit an issue or pull request if you think any slide types are missing.
Standard slide ( SimpleSlide
):
Standard slide featuring a title, short description and image like Google's intros.
addSlide(new SimpleSlide.Builder()
.title(R.string.title_1)
.description(R.string.description_1)
.image(R.drawable.image_1)
.background(R.color.background_1)
.backgroundDark(R.color.background_dark_1)
.scrollable(false)
.permission(Manifest.permission.CAMERA)
.build());
Fragment slide ( FragmentSlide
):
Custom slide containing a Fragment
or a layout resource.
addSlide(new FragmentSlide.Builder()
.background(R.color.background_2)
.backgroundDark(R.color.background_dark_2)
.fragment(R.layout.fragment_2, R.style.FragmentTheme)
.build());
(When using FragmentSlide
with a Fragment
, you should extend SlideFragment
to proxy navigation calls to the intro activity.)
Custom slide ( Slide
):
Base slide. If you want to modify what's shown in your slide this is the way to go.
Customization:
Left ("back") button:
Control left button behavior or hide/show it.
/* Show/hide button */ setButtonBackVisible(true);
/* Use skip button behavior */ setButtonBackFunction(BUTTON_BACK_FUNCTION_SKIP);
/* Use back button behavior */ setButtonBackFunction(BUTTON_BACK_FUNCTION_BACK);
Right ("next") button:
Control right button behavior or hide/show it.
/* Show/hide button */ setButtonNextVisible(true);
/* Use next and finish button behavior */ setButtonNextFunction(BUTTON_NEXT_FUNCTION_NEXT_FINISH);
/* Use next button behavior */ setButtonNextFunction(BUTTON_NEXT_FUNCTION_NEXT);
CTA button:
Change the appearance of the "call to action" button:
/* Show/hide button */ setButtonCtaVisible(getStartedEnabled);
/* Tint button text */ setButtonCtaTintMode(BUTTON_CTA_TINT_MODE_TEXT);
/* Tint button background */ setButtonCtaTintMode(BUTTON_CTA_TINT_MODE_BACKGROUND);
/* Set custom CTA label */ setButtonCtaLabel(R.string.start) /**/ setButtonCtaClickListener(new View.OnClickListener() {
}
);
Fullscreen:
Display the intro activity at fullscreen. This hides the status bar.
public class MainIntroActivity extends IntroActivity{
@Override protected void onCreate(Bundle savedInstanceState){
setFullscreen(true);
super.onCreate(savedInstanceState);
...
}
}
Make sure to call setFullscreen()
before calling super.onCreate()
Scroll duration:
Adjust how long a single slide scroll takes.
setPageScrollDuration(500);
(The page scroll duration is dynamically adapted when scrolling more than one position to reflect dynamic durations from the Material design docs.
The exact formula for calculating the scroll duration is duration * (distance + sqrt(distance)) / 2
.)
Navigation:
Block navigation:
There are three ways to block navigation for a slide:
- In a
SlideFragment
(using aFragmentSlide
) by overridingcanGoForward()
/canGoBackward()
methods. - For a
SimpleSlide
by settingSimpleSlide.Builder#canGoForward(boolean)
/SimpleSlide.Builder#canGoBackward(boolean)
.
(If at least one permission is set to theSimpleSlide
, navigation is automatically blocked until every permission is granted.) - From your
IntroActivity
by setting aNavigationPolicy
:setNavigationPolicy(new NavigationPolicy() { @Override public boolean canGoForward(int position) { return true; } @Override public boolean canGoBackward(int position) { return false; } } );
Navigate to slides
Navigate through the intro manually using one of the following methods e.g. from a listeners callback. Each of them will respect blocked navigation settings.
/* Scroll to any position */ goToSlide(5);
/* Scroll to the next slide in the intro */ nextSlide();
/* Scroll to the previous slide in the intro */ previousSlide();
/* Scroll to the last slide of the intro */ goToLastSlide();
/* Scroll to the first slide of the intro */ goToFirstSlide();
Autoplay
Automatically scroll through the intro until user interacts with the intro.
/* Start an auto slideshow with 2500ms delay between scrolls and infinite repeats */ autoplay(2500, INFINITE);
/* Start an auto slideshow with default configuration */ autoplay();
/* Cancel the slideshow */ cancelAutoplay()
Callbacks
If any of the above returns false
when a user tries to navigate to a slide, a OnNavigationBlockedListener
callback is fired that you can use to display a message. Additionally you can add plain-old ViewPager.OnPageChangeListener
s to listen for page scrolls:
addOnNavigationBlockedListener(new OnNavigationBlockedListener() {
@Override public void onNavigationBlocked(int position, int direction) {
...
}
}
);
addOnPageChangeListener(new ViewPager.OnPageChangeListener(){
@Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
...
}
@Override public void onPageSelected(int position) {
...
}
@Override public void onPageScrollStateChanged(int state) {
...
}
}
);
Tips & Tricks:
Activity result:
You can check if the user canceled the intro (by pressing back) or finished it including all slides. Just call up the activity using startActivityForResult(intent, REQUEST_CODE_INTRO);
and then listen for the result:
@Override protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_CODE_INTRO) {
if (resultCode == RESULT_OK) {
// Finished the intro
}
else {
// Cancelled the intro. You can then e.g. finish this activity too.
finish();
}
}
}
Parallax slides:
You can easily acheive a nice looking parallax effect for any slide by using either ParallaxFrameLayout.java
, ParallaxLinearLayout.java
or ParallaxRelativeLayout.java
and defining layout_parallaxFactor
for its direct childrens.
A higher factor means a stronger parallax effect, 0
means no parallax effect at all.
<com.heinrichreimersoftware.materialintro.view.parallax.ParallaxLinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
... >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_parallaxFactor="0"
... />
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_parallaxFactor="1.25"
... /> </com.heinrichreimersoftware.materialintro.view.parallax.ParallaxLinearLayout>
Check the "Canteen"-demo for a layout example.
Splash screens:
If you want to show the intro only at the first app start you can use onActivityResult()
to store a shared preference when the user finished the intro.
See the demo app for a sample splash screen implementation:
- SplashActivity.java: A fake splash screen
- SplashIntroActivity.java: The intro started from FinishActivity
- FinishActivity.java: The activity started after the splash screen
Apps using this library:
- Simply Unroot by @pinpong
- Prodigal Music Player by @SpongeBobSun
- Puff Password Utility by @SpongeBobSun
- QualityGate by @FrontEndART
- Monitor by @daniel-stoneuk
- Contact Lenses Time by @ste23droid
- Antidote Danmark by @AntidoteDanmark
- Speed Boost Lite by @tjmille2
Changes:
See the releases section for changelogs.
Open-source libraries:
material-intro uses the following open-source files:
- CheatSheet.java by @Roman Nurik (Apache License 2.0)
- AnimUtils.java by @Nick Butcher (Apache License 2.0), modified version
- InkPageIndicator.java by @Nick Butcher (Apache License 2.0)
License:
MIT License Copyright (c) 2017 Jan Heinrich Reimer Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.