BannerViewPager

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Tencent Video,QQ Music,KuGou,AliPay,Tmall,TaoBao,YouKu,Himalaya,NetEase Music,Bilibili ect. All of above App's Banner can be implements By BannerViewPager.

What's new in version 3.x

Migrate to ViewPager2
Multiple item type supported
setOrientation supported
addPageTransformer and removeTransformer supported
setAdapter replaces setHolderCreator
getData replaces getList
registerOnPageChangeCallback replaces setOnPageChangeListener
setUserInputEnabled replaces disableTouchScroll
remove setPageTransformerStyle
remove some deprecate methods in v2.x
no longer support android.support library
SCALE slide mode and COLOR slide mode supported(V3.1.0)
refreshData() supported (V3.1.0)

Preview

Click here or scan the QR code to download demo apk

1.PageStyle

Sample Click Here

MULTI_PAGE	MULTI_PAGE_SCALE	MULTI_PAGE_OVERLAP

2.Indicator

The Indicator library was split from BannerViewPager,the new repo is ViewPagerIndicator，Click the link to see more information about ViewPagerIndicator

(1)setIndicatorStyle and setIndicatorSlideMode

BannerViewPager supports three Indicator Styles and five Indicator Slide mode now.

Sample Click Here

Attrs	CIRCLE	DASH	ROUND_RECT
NORMAL
SMOOTH
WORM
COLOR
SCALE

(2)Custom Indicator

It's also support to custom indicator style,just need extends BaseIndicatorView or implement the IIndicator and override methods, then you can draw Indicators for whatever you want.

Sample Click Here

Figure Indicator	Drawable Indicator	Indicator below of Banner

API

Methods	Description	Default
BannerViewPager<T, VH> setCanLoop(boolean)	set it's can loop	default value is true
BannerViewPager<T, VH> setAutoPlay(boolean)	set can auto play	default value is true
BannerViewPager<T, VH> setInterval(int)	set the interval of item switch	unit is millisecond，default value is 3000ms
BannerViewPager<T, VH> setScrollDuration(int)	set item scroll duration	Unit is millisecond，default value is equals ViewPager2 item scroll time
BannerViewPager<T, VH> setRoundCorner(int)	set round corner for BVP. equals setRoundRect method	Require SDK_INT>=LOLLIPOP
BannerViewPager<T, VH> setOnPageClickListener(OnPageClickListener)	set a callback that when the item is clicked
BannerViewPager<T, VH> setAdapter(BaseBannerAdapter<T, VH>)	set Adapter for BVP	This method must be called，Otherwise,BVP will throw a NullPointerException
BannerViewPager<T, VH> setIndicatorVisibility(int)	indicator visibility	default is VISIBLE
BannerViewPager<T, VH> setIndicatorStyle(int)	set indicator style	enum(CIRCLE, DASH、ROUND_RECT) default value is CIRCLE
BannerViewPager<T, VH> setIndicatorGravity(int)	set gravity of indicator	enum(CENTER、START、END),default value is CENTER
BannerViewPager<T, VH> setIndicatorColor(int,int)	set indicator slider color	default normalColor: "#8C6C6D72"，default checkedColor:"#8C18171C"
BannerViewPager<T, VH> setIndicatorSlideMode(int slideMode)	set indicator slider mode	enum（NORMAL;SMOOTH;WORM;COLOR;SCALE），default value NORMAL
BannerViewPager<T, VH> setIndicatorSliderRadius(int radius)	set indicator slider radius	default value is 4dp
BannerViewPager<T, VH> setIndicatorSliderRadius(int normalRadius,int checkRadius)	set indicator slider radius	default value is 4dp
BannerViewPager<T, VH> setIndicatorSliderWidth(int)	set Indicator slider width	default value is 8dp
BannerViewPager<T, VH> setIndicatorSliderWidth(int normalWidth, int checkWidth)	set indicator slider width	default value is 8dp
BannerViewPager<T, VH> setIndicatorHeight(int)	set indicator slider height	default value is normalIndicatorSliderWidth/2
BannerViewPager<T, VH> setIndicatorSliderGap(int)	set space for indicator slider	default value is normalIndicatorSliderWidth
BannerViewPager<T, VH> setIndicatorView(IIndicator)	set custom indicator	Custom indicator must extends BaseIndicatorView or implements IIndicator
BannerViewPager<T, VH> setPageTransformer(ViewPager2.PageTransformer)	set page transformer,call this method will cover old transformer
BannerViewPager<T, VH> addPageTransformer(ViewPager2.PageTransformer)	add page transformer	supported v3.0.0
BannerViewPager<T, VH> removeTransformer(ViewPager2.PageTransformer)	Remvoe page transformer	supported v3.0.0
BannerViewPager<T, VH> setCurrentItem(int)	Set the currently selected page.	supported v2.3.5
int getCurrentItem()	return current position	Supported v2.3.5
BannerViewPager<T, VH> setPageStyle(PageStyle)	set page style for BVP	supported v2.4.0 enum(MULTI_PAGE_SCALE;MULTI_PAGE_OVERLAP)
BannerViewPager<T, VH> setPageMargin(int)		supported v2.4.0
BannerViewPager<T, VH> setIndicatorMargin(int left, int top, int right, int bottom)	set margin for indicator	supported v2.4.1
BannerViewPager<T, VH> registerOnPageChangeCallback(OnPageChangeListener)	Set a callback that will be invoked whenever the page changes or is incrementally scrolled.
BannerViewPager<T, VH> setRoundRect(int)	set round corner for BVP	Require SDK_INT>=LOLLIPOP
BannerViewPager<T, VH> setOrientation(int)	Sets the orientation of the BVP	support in v3.0.0 {@link #ORIENTATION_HORIZONTAL} or {@link #ORIENTATION_VERTICAL}
BannerViewPager<T, VH> setUserInputEnabled(int)	Enable or disable user initiated scrolling
void startLoop()	start loop	Don't need call this method while init BVP
void stopLoop()	Stop loop
List<T> getData()	return data in BVP
void create(List list)	Create BannerViewPager with data	If data has fetched while you setup BannerViewPager,you can call this method
void create()	Create BannerViewPager with no data	You can call this，If fetching data asynchronously(for example,The data is from remote server or database).While fetch data successfully,just need call refreshData() method to refresh
void refreshData(List)	Refresh if data is update	Supported in v3.1.0

Attributes

Attributes	format	description
bvp_interval	integer	set the interval of item switch
bvp_scroll_duration	integer	set item scroll duration
bvp_can_loop	boolean	set BVP can cycle
bvp_auto_play	boolean	set BVP can auto play
bvp_indicator_checked_color	color	set checked color for indicator slider
bvp_indicator_normal_color	color	set normal color for indicator slider
bvp_indicator_radius	dimension	if it's circle style the value is radius of circle,if the indicator style is DASH or ROUND_RECT the value is width/2
bvp_round_corner	dimension	set round corner for BVP
bvp_page_margin	dimension	set item margin
bvp_reveal_width	dimension	it's only used when the page style is MULTI_PAGE_SCALE/MULTI_PAGE_OVERLAP,the value is two side item reveal width
bvp_indicator_style	enum	indicator style(circle/dash/round_rect)
bvp_indicator_slide_mode	enum	indicator slide mode(normal;smooth;worm;color;scale)
bvp_indicator_gravity	enum	indicator gravity(center/start/end)
bvp_page_style	enum	page style(normal/multi_page/multi_page_overlap/multi_page_scale)
bvp_indicator_visibility	enum	indicator visibility(visible/gone/invisible)

Usage

Because Viewpager2 is not supported in android.support library, So BannerViewPager V3.0 is no longer support android support.library. If you are still using android.support library, please use BannerViewPager v2.x

1.Gradle dependency

Add it in your root build.gradle at the end of repositories:

allprojects {
		repositories {
			...
			maven { url 'https://jitpack.io' }
		}
	}

Then Add the dependency

implementation 'com.github.zhpanvip:BannerViewPager:latestVersion'

latestVersion:

2.Add BannerViewPager in layout.xml

    <com.zhpan.bannerview.BannerViewPager
            android:id="@+id/banner_view"
            android:layout_width="match_parent"
            android:layout_margin="10dp"
            android:layout_height="160dp" />

3.The item layout of banner:

Attention:The layout width and height required "match_parent".Otherwise,the ViewPager2 will throws a IllegalStateException.

    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <ImageView
            android:id="@+id/banner_image"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:scaleType="centerCrop" />

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentBottom="true"
            android:gravity="center_vertical">

            <TextView
                android:id="@+id/tv_describe"
                android:layout_width="wrap_content"
                android:layout_height="match_parent"
                android:layout_gravity="center_vertical"
                android:layout_marginStart="15dp"
                android:gravity="center_vertical"
                android:paddingTop="5dp"
                android:paddingBottom="5dp"
                android:textColor="#FFFFFF"
                android:textSize="16sp" />
        </LinearLayout>

    </RelativeLayout>

4.Extends BaseViewHolder,and override methods.

Attention:Don't use {@link RecyclerView.ViewHolder#getAdapterPosition} method to get position in ViewHolder，this method will return a fake position.

    public class NetViewHolder extends BaseViewHolder<BannerData> {

        public NetViewHolder(@NonNull View itemView) {
            super(itemView);
            CornerImageView imageView = findView(R.id.banner_image);
            imageView.setRoundCorner(BannerUtils.dp2px(0));
        }

        @Override
        public void bindData(BannerData data, int position, int pageSize) {
            CornerImageView imageView = findView(R.id.banner_image);
            Glide.with(imageView).load(data.getImagePath()).placeholder(R.drawable.placeholder).into(imageView);
        }
    }

If you need get position with getAdapterPosition() method,you can do like the following code to get real position:

     int adapterPosition = getAdapterPosition();
     int realPosition = BannerUtils.getRealPosition(isCanLoop, adapterPosition, mList.size());

5.Extends BaseBannerAdapter,and override methods

public class HomeAdapter extends BaseBannerAdapter<BannerData, NetViewHolder> {
    @Override
    protected void onBind(NetViewHolder holder, BannerData data, int position, int pageSize) {
        holder.bindData(data, position, pageSize);
    }

    @Override
    public NetViewHolder createViewHolder(View itemView, int viewType) {
        return new NetViewHolder(itemView);
    }

    @Override
    public int getLayoutId(int viewType) {
        return R.layout.item_net;
    }
}

5.Use in Activity or Fragment:

You can call create() method with no parameter，If fetching data asynchronously(for example,The data is from remote server or database):

Java code

    private BannerViewPager<CustomBean, NetViewHolder> mViewPager;
    ...
	private void setupViewPager() {
             mViewPager = findViewById(R.id.banner_view);
             mViewPager
                       .setAutoPlay(true)
                       .setScrollDuration(800)
                       .setIndicatorStyle(IndicatorStyle.ROUND_RECT)
                       .setIndicatorSliderGap(getResources().getDimensionPixelOffset(R.dimen.dp_4))
                       .setIndicatorSliderWidth(getResources().getDimensionPixelOffset(R.dimen.dp_4), getResources().getDimensionPixelOffset(R.dimen.dp_10))
                       .setIndicatorSliderColor(getColor(R.color.red_normal_color), getColor(R.color.red_checked_color))
                       .setOrientation(ViewPager2.ORIENTATION_VERTICAL)
                       .setInterval(2000)
                       .setAdapter(new HomeAdapter())
                       .registerOnPageChangeCallback(new ViewPager2.OnPageChangeCallback() {
                           @Override
                           public void onPageSelected(int position) {
                               super.onPageSelected(position);
                               BannerData bannerData = mViewPagerHorizontal.getData().get(position);
                               mTvTitle.setText(bannerData.getTitle());
                           }
                       }).create();
        }

Kotlin Code

    private lateinit var mViewPager: BannerViewPager<CustomBean, NetViewHolder>
    ...

    private fun setupViewPager() {
            mViewPager = findViewById(R.id.banner_view)
            mViewPager.apply {
                adapter = HomeAdapter()
                setAutoPlay(true)
                setIndicatorStyle(IndicatorStyle.ROUND_RECT)
                setIndicatorSliderGap(getResources().getDimensionPixelOffset(R.dimen.dp_4))
                setIndicatorMargin(0, 0, 0, resources.getDimension(R.dimen.dp_100).toInt())
                setIndicatorSlideMode(IndicatorSlideMode.SMOOTH)
                setIndicatorSliderRadius(resources.getDimension(R.dimen.dp_3).toInt(), resources.getDimension(R.dimen.dp_4_5).toInt())
                setIndicatorSliderColor(ContextCompat.getColor(this@WelcomeActivity, R.color.white),
                        ContextCompat.getColor(this@WelcomeActivity, R.color.white_alpha_75))
                registerOnPageChangeCallback(object : ViewPager2.OnPageChangeCallback() {
                                     override fun onPageSelected(position: Int) {
                                         BannerUtils.log("position:$position")
                                     }
                                 })
            }.create()
        }

While fetch data successfully,just need call refreshData() method to refresh:

    mViewPager.refreshData(data)

If fetching data synchronously，you can call create(List) method with parameters.

     private lateinit var mViewPager: BannerViewPager<CustomBean, NetViewHolder>
     ...

     private fun setupViewPager() {
             mViewPager = findViewById(R.id.banner_view)
             mViewPager.apply {
                 adapter = HomeAdapter()
                 setAutoPlay(true)
                 setIndicatorStyle(IndicatorStyle.ROUND_RECT)
                 setIndicatorSliderGap(getResources().getDimensionPixelOffset(R.dimen.dp_4))
                 setIndicatorMargin(0, 0, 0, resources.getDimension(R.dimen.dp_100).toInt())
                 setIndicatorSlideMode(IndicatorSlideMode.SMOOTH)
                 setIndicatorSliderRadius(resources.getDimension(R.dimen.dp_3).toInt(), resources.getDimension(R.dimen.dp_4_5).toInt())
                 setIndicatorSliderColor(ContextCompat.getColor(this@WelcomeActivity, R.color.white),
                         ContextCompat.getColor(this@WelcomeActivity, R.color.white_alpha_75))
                 registerOnPageChangeCallback(object : ViewPager2.OnPageChangeCallback() {
                                      override fun onPageSelected(position: Int) {
                                          BannerUtils.log("position:$position")
                                      }
                                  })
             }.create(data)
         }

6.startLoop and stopLoop

If the version you used is later than 2.5.0,you don't need care of startLoop and stopLoop in Activity or Fragment. But the two methods is still public.

Recommend call stopLoop in onPause() and startLoop in onResume() to improve performance：

    @Override
    protected void onPause() {
        if (mBannerViewPager != null)
                mBannerViewPager.stopLoop();
        super.onPause();
    }

    @Override
    protected void onResume() {
        super.onResume();
        if (mBannerViewPager != null)
            mBannerViewPager.startLoop();
    }

7.Advanced Features---Custom IndicatorView

The example will implement an custom IndicatorView as the follow gif.

Custom IndicatorView Style

(1)Custom View and extends BaseIndicatorView

public class FigureIndicatorView extends BaseIndicatorView {

    private int radius = DpUtils.dp2px(20);

    private int backgroundColor = Color.parseColor("#88FF5252");

    private int textColor = Color.WHITE;

    private int textSize=DpUtils.dp2px(13);

    public FigureIndicatorView(Context context) {
        this(context, null);
    }

    public FigureIndicatorView(Context context, @Nullable AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public FigureIndicatorView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        mPaint = new Paint();
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        setMeasuredDimension(2 * radius, 2 * radius);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        mPaint.setColor(backgroundColor);
        canvas.drawCircle(getWidth() / 2, getHeight() / 2, radius, mPaint);
        mPaint.setColor(textColor);
        mPaint.setTextSize(textSize);
        String text = currentPosition + 1 + "/" + pageSize;
        int textWidth = (int) mPaint.measureText(text);
        Paint.FontMetricsInt fontMetricsInt = mPaint.getFontMetricsInt();
        int baseline = (getMeasuredHeight() - fontMetricsInt.bottom + fontMetricsInt.top) / 2 - fontMetricsInt.top;
        canvas.drawText(text, (getWidth() - textWidth) / 2, baseline, mPaint);
    }

    public void setRadius(int radius) {
        this.radius = radius;
    }

    @Override
    public void setBackgroundColor(@ColorInt int backgroundColor) {
        this.backgroundColor = backgroundColor;
    }

    public void setTextSize(int textSize) {
        this.textSize = textSize;
    }

    public void setTextColor(int textColor) {
        this.textColor = textColor;
    }
}

(2)Set custom indicator for BannerViewPager

    FigureIndicatorView indicatorView = new FigureIndicatorView(mContext);
    indicatorView.setRadius(getResources().getDimensionPixelOffset(R.dimen.dp_18));
    indicatorView.setTextSize(getResources().getDimensionPixelSize(R.dimen.sp_13));
    indicatorView.setBackgroundColor(Color.parseColor("#aa118EEA"));

    mViewPager.setAutoPlay(false).setCanLoop(true)
               .setIndicatorSlideMode(IndicatorSlideMode.NORMAL)
               .setIndicatorVisibility(View.VISIBLE)
               .setIndicatorGravity(IndicatorGravity.END)
               .setIndicatorView(indicatorView).create(getPicList(4));

8. Proguard

you must add proguard rules，If you have called setScrollDuration method in your project:

    -keep class androidx.recyclerview.widget.**{*;}
    -keep class androidx.viewpager2.widget.**{*;}

TODO

FAQ

If you have any question regard to BannerViewPager, please scan the QR code and join the QQ group to communicate.

Sponsor

如果您觉得BannerViewPager库还不错，帮您省了不少时间，可以点击Star表示对作者的支持，也可以扫描二维码请作者喝杯咖啡。

AliPay	WeChat

Thanks

玩Android

finite-cover-flow

zguop-banner

License

Copyright 2017-2020 zhpanvip

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.

Grimness/BannerViewPager

BannerViewPager

English | 中文

What's new in version 3.x

Preview

Click here or scan the QR code to download demo apk

1.PageStyle

2.Indicator

(1)setIndicatorStyle and setIndicatorSlideMode

(2)Custom Indicator

API

Attributes

Usage

1.Gradle dependency

2.Add BannerViewPager in layout.xml

3.The item layout of banner:

4.Extends BaseViewHolder,and override methods.

5.Extends BaseBannerAdapter,and override methods

5.Use in Activity or Fragment:

Java code

Kotlin Code

6.startLoop and stopLoop

7.Advanced Features---Custom IndicatorView

8. Proguard

TODO

FAQ

Sponsor

Thanks

License