轮播图banner 及自定义指示器

依赖

//轮播图
implementation 'com.youth.banner:banner:2.1.0'

xml

<androidx.constraintlayout.widget.ConstraintLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:clipChildren="false">

    <com.youth.banner.Banner
        android:id="@+id/banner"
        android:layout_width="match_parent"
        android:layout_height="@dimen/dp_360"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <LinearLayout
        android:id="@+id/indicator"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="@dimen/dp_12"
        android:background="@drawable/heise_yuanjiao_25"
        android:gravity="center_vertical"
        android:orientation="horizontal"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent">


        <androidx.appcompat.widget.AppCompatTextView
            android:id="@+id/indicator_number"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@drawable/heise_yuanjiao_25"
            android:paddingLeft="@dimen/dp_12"
            android:paddingTop="@dimen/dp_3"
            android:paddingRight="@dimen/dp_12"
            android:paddingBottom="@dimen/dp_3"
            android:text="1/5"
            android:textColor="#FFFFFF"

            android:textSize="@dimen/sp_13" />

        <androidx.appcompat.widget.AppCompatTextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="@dimen/dp_12"
            android:layout_marginRight="@dimen/dp_12"
            android:paddingLeft="@dimen/dp_6"
            android:paddingTop="@dimen/dp_3"
            android:paddingRight="@dimen/dp_6"
            android:paddingBottom="@dimen/dp_3"
            android:text="店铺"
            android:textColor="#FFFFFF"
            android:textSize="@dimen/sp_14"
            android:textStyle="bold" />

        <androidx.appcompat.widget.AppCompatImageView
            android:layout_width="@dimen/dp_18"
            android:layout_height="@dimen/dp_18"
            android:layout_marginRight="@dimen/dp_6"
            android:background="@drawable/bg_yj_baise_25"
            android:padding="@dimen/dp_4"
            android:src="@drawable/icon_jin" />


    </LinearLayout>

    <androidx.constraintlayout.widget.ConstraintLayout
        android:id="@+id/layout_bar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:gravity="center_vertical"
        android:orientation="horizontal"
        android:paddingRight="@dimen/dp_12"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <androidx.appcompat.widget.AppCompatImageView
            android:layout_width="@dimen/dp_26"
            android:layout_height="@dimen/dp_26"
            android:layout_marginLeft="@dimen/dp_12"
            android:background="@drawable/heise_yuanjiao_25"
            android:padding="@dimen/dp_6"
            android:src="@drawable/icon_back_bai"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <androidx.appcompat.widget.AppCompatImageView
            android:id="@+id/shopping_cart"
            android:layout_width="@dimen/dp_26"
            android:layout_height="@dimen/dp_26"
            android:layout_gravity="center_vertical"
            android:layout_marginRight="@dimen/dp_12"
            android:background="@drawable/heise_yuanjiao_25"
            android:padding="@dimen/dp_6"
            android:src="@mipmap/icon_gouwuche_baise"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <androidx.appcompat.widget.AppCompatTextView
            android:layout_width="@dimen/dp_18"
            android:layout_height="@dimen/dp_18"
            android:layout_marginTop="-10dp"
            android:layout_marginRight="-10dp"
            android:background="@drawable/hongse_yj_25"
            android:gravity="center"
            android:text="99"
            android:textColor="@color/white"
            android:textSize="@dimen/sp_10"
            app:layout_constraintRight_toRightOf="@id/shopping_cart"
            app:layout_constraintTop_toTopOf="@id/shopping_cart" />

    </androidx.constraintlayout.widget.ConstraintLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

java

mData=new ArrayList<>();
mData.add("https://bpic.588ku.com/back_origin_min_pic/21/01/14/a4b5d0e569490d6507fee51f2e44b65f.jpg");
mData.add("https://bpic.588ku.com/back_origin_min_pic/19/10/22/c58175ace5dabb2e380fcdf424e21eb0.jpg");
mData.add("https://bpic.588ku.com/back_origin_min_pic/20/03/10/d5a550620432ed1bab3bb4dd67741048.jpg");
mData.add("https://pic.52112.com/180705/JPG-180705_1321/MhN9zu6Fei_small.jpg");
mData.add("https://img95.699pic.com/photo/50158/5392.jpg_wh860.jpg");
binding.banner.setAdapter(new BannerImageAdapter<String>(mData) {

    @Override
    public void onBindView(BannerImageHolder holder, String data, int position, int size) {
        RoundedCorners roundedCorners = new RoundedCorners(10);
        RequestOptions options = RequestOptions.bitmapTransform(roundedCorners);
        Glide.with(holder.itemView).load(data).apply(options).into(holder.imageView);
    }
})
        .setOnBannerListener((OnBannerListener<String>) (data, position) -> ImageZoom.show(requireActivity(),data,mData))
        .addOnPageChangeListener(new OnPageChangeListener() {
    @Override
    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

    }

    @Override
    public void onPageSelected(int position) {
        binding.indicatorNumber.setText((position+1)+"/"+mData.size());
    }

    @Override
    public void onPageScrollStateChanged(int state) {

    }
}).addBannerLifecycleObserver(requireActivity());