MaterialViewPager

Material Design ViewPager easy to use library

#Sample

You can find a sample APK : Link

And have a look on a sample Youtube Video : Youtube Link

#Download

In your module

compile ('com.github.florent37:materialviewpager:1.0.3@aar'){
    transitive = true
}

#Usage

Add MaterialViewPager to your activity's layout

<com.github.florent37.materialviewpager.MaterialViewPager
    android:id="@+id/materialViewPager"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:viewpager_logo="@layout/header_logo"
    app:viewpager_logoMarginTop="100dp"
    app:viewpager_color="@color/colorPrimary"
    app:viewpager_headerHeight="200dp"
    app:viewpager_headerAlpha="1.0"
    app:viewpager_hideLogoWithFade="false"
    app:viewpager_hideToolbarAndTitle="true"
    app:viewpager_enableToolbarElevation="true"
    app:viewpager_parallaxHeaderFactor="1.5"
    app:viewpager_headerAdditionalHeight="20dp"
    />

with header_logo.xml

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/logo_white"
    android:layout_width="wrap_content"
    android:layout_height="@dimen/materialviewpager_logoHeight"
    android:text="Material is Good"
    android:textSize="30sp"
    android:textColor="@android:color/white"/>

You will see on Android Studio Preview :

To get a beautiful screen and enable preview, you theme may follow

<style name="AppBaseTheme" parent="@style/Theme.AppCompat.Light">
</style>

<style name="AppTheme" parent="AppBaseTheme">

   <item name="android:textColorPrimary">@android:color/white</item>
   <item name="drawerArrowStyle">@style/DrawerArrowStyle</item>
   <item name="android:windowTranslucentStatus" tools:targetApi="21">true</item>

   <item name="android:windowContentOverlay">@null</item>
   <item name="windowActionBar">false</item>
   <item name="windowNoTitle">true</item>

   <!-- Toolbar Theme / Apply white arrow -->
   <item name="colorControlNormal">@android:color/white</item>
   <item name="actionBarTheme">@style/AppTheme.ActionBarTheme</item>

   <!-- Material Theme -->
   <item name="colorPrimary">@color/colorPrimary</item>
   <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
   <item name="colorAccent">@color/accent_color</item>

   <item name="android:navigationBarColor" tools:targetApi="21">@color/navigationBarColor</item>
   <item name="android:windowDrawsSystemBarBackgrounds" tools:targetApi="21">true</item>

</style>

<style name="AppTheme.ActionBarTheme" parent="@style/ThemeOverlay.AppCompat.ActionBar">
    <!-- White arrow -->
    <item name="colorControlNormal">@android:color/white</item>
</style>

<style name="DrawerArrowStyle" parent="Widget.AppCompat.DrawerArrowToggle">
    <item name="spinBars">true</item>
    <item name="color">@color/drawerArrowColor</item>
</style>

#Retrieve the MaterialViewPager

You can use MaterialViewPager as an usual Android View, and get it by findViewById

public class MainActivity extends ActionBarActivity {

    private MaterialViewPager mViewPager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mViewPager = (MaterialViewPager) findViewById(R.id.materialViewPager);
    }
}

#Customisation

First choose your color and height

<com.github.florent37.materialviewpager.MaterialViewPager
        android:id="@+id/materialViewPager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        ...
        app:viewpager_color="@color/colorPrimary"
        app:viewpager_headerHeight="200dp"
        ...
        />

##Set your logo

<com.github.florent37.materialviewpager.MaterialViewPager
        ...
        app:viewpager_logo="@layout/header_logo" <-- look custom logo layout
        app:viewpager_logoMarginTop="100dp" <-- look at the preview
        ...
        />

###Titlebar Logo

Your logo's layout must

layout_height="@dimen/materialviewpager_logoHeight"

header_logo.xml

<ImageView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/logo_white"
    android:layout_width="200dp"
    android:layout_height="@dimen/materialviewpager_logoHeight"
    android:fitsSystemWindows="true"
    android:adjustViewBounds="true"
    android:layout_centerHorizontal="true"
    android:src="@drawable/logo_white" />

<com.github.florent37.materialviewpager.MaterialViewPager`
        ...
        app:viewpager_hideLogoWithFade="false"
        ...
        />

###Fading Logo

header_logo.xml

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="80dp"
    android:layout_height="80dp"
    android:layout_centerHorizontal="true"
    android:background="@drawable/circle">

    <ImageView
        android:layout_width="30dp"
        android:layout_height="30dp"
        android:fitsSystemWindows="true"
        android:adjustViewBounds="true"
        android:layout_gravity="center"
        android:src="@drawable/flying" />
</FrameLayout>

<com.github.florent37.materialviewpager.MaterialViewPager`
        ...
        app:viewpager_hideLogoWithFade="true"
        ...
        />

##Toolbar Animation

##Hide Logo and Toolbar

<com.github.florent37.materialviewpager.MaterialViewPager`
        ...
        app:hideToolbarAndTitle="true"
        ...
        />

###Sticky Toolbar

<com.github.florent37.materialviewpager.MaterialViewPager`
        ...
        app:hideToolbarAndTitle="false"
        ...
        />

##Custom Tab Bar

You can set you own tab bar, by default I provided 2 implementations

###Standard

<com.github.florent37.materialviewpager.MaterialViewPager`
        ...
        app:viewpager_pagerTitleStrip="@layout/material_view_pager_pagertitlestrip_standard"
        ...
        />

###News Stand

<com.github.florent37.materialviewpager.MaterialViewPager`
        ...
        app:viewpager_pagerTitleStrip="@layout/material_view_pager_pagertitlestrip_newstand"
        ...
        />

###Or create your own tab bar

Create your own layout using a PagerSlidingTabStrip

my_tabs.xml

<com.astuetz.PagerSlidingTabStrip
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@id/materialviewpager_pagerTitleStrip"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:pstsPaddingMiddle="true"
    app:pstsDividerPadding="20dp"
    app:pstsIndicatorColor="#FFF"
    app:pstsIndicatorHeight="2dp"
    app:pstsShouldExpand="true"
    app:pstsTabPaddingLeftRight="10dp"
    app:pstsTextAllCaps="true"
    tools:background="#A333"
     />

Don't forget to give it id="@id/materialviewpager_pagerTitleStrip"

<com.github.florent37.materialviewpager.MaterialViewPager`
        ...
        app:viewpager_pagerTitleStrip="@layout/my_tabs"
        ...
        />

#Animate Header

Simply listen to the ViewPager Page Change and modify the header's color and image

//it's a sample ViewPagerAdapter
mViewPager.setAdapter(new FragmentStatePagerAdapter(getSupportFragmentManager()) {

            int oldPosition = -1;

            @Override
            public Fragment getItem(int position) {
                return RecyclerViewFragment.newInstance();
            }

            @Override
            public int getCount() {
                return 4;
            }

            @Override
            public CharSequence getPageTitle(int position) {
                return "Tab "+position;
            }

            //called when the current page has changed
            @Override
            public void setPrimaryItem(ViewGroup container, int position, Object object) {
                super.setPrimaryItem(container, position, object);

                //only if position changed
                if(position == oldPosition)
                    return;
                oldPosition = position;

                int color = 0;
                String imageUrl = "";
                switch (position){
                    case 0:
                        imageUrl = "http://cdn1.tnwcdn.com/wp-content/blogs.dir/1/files/2014/06/wallpaper_51.jpg";
                        color = getResources().getColor(R.color.blue);
                        break;
                    case 1:
                        imageUrl = "https://fs01.androidpit.info/a/63/0e/android-l-wallpapers-630ea6-h900.jpg";
                        color = getResources().getColor(R.color.green);
                        break;
                    case 2:
                        imageUrl = "http://www.droid-life.com/wp-content/uploads/2014/10/lollipop-wallpapers10.jpg";
                        color = getResources().getColor(R.color.cyan);
                        break;
                    case 3:
                        imageUrl = "http://www.tothemobile.com/wp-content/uploads/2014/07/original.jpg";
                        color = getResources().getColor(R.color.red);
                        break;
                }

                final int fadeDuration = 400;

                //change header's color and image
                mViewPager.setImageUrl(imageUrl,fadeDuration);
                mViewPager.setColor(color,fadeDuration);

            }

        });

#Toolbar

Toolbar toolbar = mViewPager.getToolbar();

if (toolbar != null) {
     setSupportActionBar(toolbar);

     ActionBar actionBar = getSupportActionBar();
     actionBar.setDisplayHomeAsUpEnabled(true);
     actionBar.setDisplayShowHomeEnabled(true);
     actionBar.setDisplayShowTitleEnabled(true);
     actionBar.setDisplayUseLogoEnabled(false);
     actionBar.setHomeButtonEnabled(true);
}

#ViewPager

ViewPager viewPager = mViewPager.getViewPager();
viewPage.setAdapter(...);

//After set an adapter to the ViewPager
mViewPager.getPagerTitleStrip().setViewPager(mViewPager.getViewPager());

#Register your Scrollable

First thing, your fragment view and your scrollable must be transparent, so do not use android:backgound="..." Sample :

<android.support.v7.widget.RecyclerView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/recyclerView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    />

##RecyclerView

From your fragment

mAdapter = new RecyclerViewMaterialAdapter(new ***Adapter(mList));
mRecyclerView.setAdapter(mAdapter);

MaterialViewPagerHelper.registerRecyclerView(getActivity(), mRecyclerView, null);

###ReyclerView.OnScrollListener

If you already use ReyclerView.OnScrollListener (maybe for load more, or anything else)

MaterialViewPagerHelper.registerRecyclerView(getActivity(), mRecyclerView, myRecyclerViewOnScrollListener);

So myRecyclerViewOnScrollListener will be still notified

##ScrollView

The ScrollView must be an ObservableScrollView

MaterialViewPagerHelper.registerScrollView(getActivity(), mScrollView, null);

###CallBacks If you already use ObservableScrollViewCallbacks (maybe for load more, or anything else)

MaterialViewPagerHelper.registerScrollView(getActivity(), mScrollView, myObservableScrollViewCallbacks);

So myObservableScrollViewCallbacks will be still notified

###Layout

And must include @layout/material_view_pager_placeholder as first child

<com.github.ksoichiro.android.observablescrollview.ObservableScrollView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/scrollView"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <include layout="@layout/material_view_pager_placeholder"/>

        ...your content...

    </LinearLayout>
</com.github.ksoichiro.android.observablescrollview.ObservableScrollView>

##[Killed for less...] WebView

The WebView must be an ObservableWebView

//must be called before loadUrl()
MaterialViewPagerHelper.preLoadInjectHeader(mWebView);

//have to inject header when WebView page loaded
mWebView.setWebViewClient(new WebViewClient() {
    @Override
    public void onPageFinished(WebView view, String url) {
        MaterialViewPagerHelper.injectHeader(mWebView, true);
    }
    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        view.loadUrl(url);
        return true;
    }
});

mWebView.loadUrl("http://...");

MaterialViewPagerHelper.registerWebView(getActivity(), mWebView, null);

##[Deprecated] ListView

Smoother if using RecyclerView !

The ListView must be an ObservableListView

mAdapter = new ListViewMaterialAdapter(new ***Adapter(getActivity(),mList));
mListView.setAdapter(mAdapter);
MaterialViewPagerHelper.registerListView(getActivity(), mListView, null);

#CHANGELOG

##1.0.3

Fixed : Rapid scrolling results in varying Toolbar height

RecyclerViewMaterialAdapter can handle a custom placeholder cells count (usefull for GridLayoutManager)

public RecyclerViewMaterialAdapter(RecyclerView.Adapter adapter, int placeholderSize)

##1.0.2

Added attributes

app:viewpager_parallaxHeaderFactor="1.5"
app:viewpager_headerAdditionalHeight="20dp"

parallaxHeaderFactor Modify the speed of parallax header scroll (not the speed of KenBurns effect) parallaxHeaderFactor Set up the height of the header's layout displayed behind the first cards view

Fixed issue when scroll down & scroll up multiples time while hideToolbarAndTitle="true"

##1.0.1

Added attributes

viewpager_headerAlpha="0.6"

#TODO

Header image does not load every time
Remove Webviews from Android SDK !!!

#Community

Looking for contributors, feel free to fork !

Tell me if you're using my library in your application, I'll share it in this README

#Dependencies

Picasso (from Square)
KenBurnsView (from flavioarfaria)
Material PagerSlidingTabStrip (from jpardogo, forked from astuetz)
Android-Observablescrollview (from ksoichiro)

#Credits

Author: Florent Champigny

License

Copyright 2015 florent37, Inc.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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