BannerView-Android

Android Kotlin基于ViewPage2和ViewBinding的轻量级BannerView，功能全面，易定制扩展

Demo效果图

使用

• 添加gradle依赖（version=）

  //Add it in your root build.gradle at the end of repositories:
  allprojects {
    repositories {
    	...
  		maven { url 'https://jitpack.io' }
  	}
  }
  
  //Add it in your app build.gradle
  dependencies {
      implementation 'com.github.zhzc0x:banner-android:$version'
  }

• 布局文件中声明（更多属性说明详见 #自定义属性说明）

  <com.zhzc0x.banner.BannerView
          android:id="@+id/bannerView1"
          android:layout_width="match_parent"
          android:layout_height="0dp"
          app:autoplay="true"
          app:loopPlay="true"
          app:displayTextBackground="#4D000000"
          app:displayTextColor="@color/white"
          app:displayTextGravity="left"
          app:displayTextSize="16sp"
          app:displayTextStyle="bold"
          app:indicatorGravity="bottom|right"
          app:isNumberIndicator="false"
          app:layout_constraintBottom_toTopOf="@+id/bannerView2"
          app:layout_constraintTop_toTopOf="parent" /> 

• 代码调用（Kotlin）

  val dataList1 = listOf(
          BannerInfo(R.drawable.ic_test1,"我是图片test1"),
          BannerInfo(R.drawable.ic_test2,"我是图片test2"),
          BannerInfo(R.drawable.ic_test3,"我是图片test3"),
          BannerInfo(R.drawable.ic_test4,"我是图片test4")
      )
  //加载本地图片
  binding.bannerView1.setData(dataList1, dataList1.map { it.displayText }) { itemBinding, data ->
          itemBinding.root.setImageResource(data.imageId)
          itemBinding.root.setOnClickListener {
              Toast.makeText(this, "${data.displayText}: 被点击了！", Toast.LENGTH_SHORT).show()
          }
      }
  val dataList3 = listOf(
          BannerInfo(imageUrl = "http://photocq.photo.store.qq.com/psc?/V14Rxniv2U0S9D/cXP39dXjFtymXNK2lOGni7w0LiIWS5IckQE9TG0t1ftC89uRDmF.vB14O6fOc2FZphzCrtsdqH6GAsbLCpfsG5wov8Ozz7TyS45UyAVf6WI!/b&bo=ngL2AZ4C9gEFFzQ!&rf=viewer_4",
              displayText = "我是图片test9"),
          BannerInfo(imageUrl = "http://photocq.photo.store.qq.com/psc?/V14Rxniv2U0S9D/cXP39dXjFtymXNK2lOGni83Es8qQnOlse*pbVd1M1HZfzu7HzvPNEeBfuKoXEYcKLv1MAEx0HFHwpgoyGSM8VNqmeINMJcNRtyDKTGIKK*0!/b&bo=LAIgAywCIAMFFzQ!&rf=viewer_4",
              displayText = "我是图片test10"),
          BannerInfo(imageUrl = "http://photocq.photo.store.qq.com/psc?/V14Rxniv2U0S9D/cXP39dXjFtymXNK2lOGni0YAeqnprq8Bz*2LVpYQXcbygVY1K8xi7t8fOe6KdEK6V*hj6vlsz2CJbP5obbQKYYelaUfvptiyFC83Y9SAB84!/b&bo=CQI3AQkCNwEFFzQ!&rf=viewer_4",
              displayText = "我是图片test11"),
          BannerInfo(imageUrl = "http://photocq.photo.store.qq.com/psc?/V14Rxniv2U0S9D/cXP39dXjFtymXNK2lOGni1tyipuKGV5Qo53j5*PS*1xryaKKaT1QibzItxvf4i*fiw8m9aV86cUhG0SGknOczhjV.TQ6DgyUkyXyhIHFEIY!/b&bo=ngLOAZ4CzgEFFzQ!&rf=viewer_4",
              displayText = "我是图片test12")
      )
  //加载网络图片
  binding.bannerView3.setData(dataList3, dataList3.map { it.displayText }) { itemBinding, data ->
              Glide.with(this).load(data.imageUrl).into(itemBinding.root)
              itemBinding.root.setOnClickListener {
                  Toast.makeText(this, "${data.displayText}: 被点击了！", Toast.LENGTH_SHORT).show()
              }
          }
  binding.bannerView1.setPageTransformer(MarginPageTransformer(48))
  //Activity可见时恢复自动播放
  override fun onResume() {
      super.onResume()
      binding.bannerView1.setAutoplay(true)
      binding.bannerView3.setAutoplay(true)
  }
  //Activity不可见时停止自动播放
  override fun onPause() {
      super.onPause()
      binding.bannerView1.setAutoplay(false)
      binding.bannerView3.setAutoplay(false)
  }

• 代码调用（Java）

  	private ActivityTestJavaBinding viewBinding;
  
      @Override
      protected void onCreate(@Nullable Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          viewBinding = ActivityTestJavaBinding.inflate(getLayoutInflater());
          setContentView(viewBinding.getRoot());
          List<Integer> dataList = new ArrayList<>();
          dataList.add(R.drawable.ic_test1);
          dataList.add(R.drawable.ic_test2);
          dataList.add(R.drawable.ic_test3);
          viewBinding.bannerView1.setData(dataList, new Function2<ItemBannerImageBinding, Integer, Unit>() {
              @Override
              public Unit invoke(ItemBannerImageBinding itemBannerImageBinding, Integer integer) {
                  itemBannerImageBinding.getRoot().setBackgroundResource(integer);
                  return Unit.INSTANCE;
              }
          });
          List<String> textList = new ArrayList<>();
          textList.add("我是图片test1");
          textList.add("我是图片test2");
          textList.add("我是图片test3");
          viewBinding.bannerView2.setData(dataList, textList, ItemBannerImageBinding.class,
                  new Function2<ItemBannerImageBinding, Integer, Unit>() {
              @Override
              public Unit invoke(ItemBannerImageBinding itemBannerImageBinding, Integer integer) {
                  itemBannerImageBinding.getRoot().setBackgroundResource(integer);
                  return Unit.INSTANCE;
              }
          });
      }

• API说明

  //设置Banner数据，可完全自定义Banner Item布局，默认使用ItemBannerImageBinding， 
  fun <VB: ViewBinding, M> setData(dataList: List<M>, displayTextList: List<String>? = null,
                                       itemBinding: KClass<VB>, bind: (VB, M) -> Unit)
  //设置自动播放开关
  fun setAutoplay(autoplay: Boolean)
  //设置跳转指定Item
  fun setCurrentItem(item: Int)}
  //设置是否允许用户滑动
  fun setAllowUserScrollable(scrollable: Boolean) }
  //设置ViewPage2的overScrollMode
  fun setPageOverScrollMode(overScrollMode: Int)
  //添加ViewPage2的OnPageChangeCallback
  fun addOnPageChangeCallback(@NonNull callback: ViewPager2.OnPageChangeCallback)
  //移除ViewPage2的OnPageChangeCallback
  fun removeOnPageChangeCallback(@NonNull callback: ViewPager2.OnPageChangeCallback)
  //设置自定义PageTransformer
  fun setPageTransformer(@Nullable transformer: ViewPager2.PageTransformer)

自定义属性说明

<declare-styleable name="BannerView">
    <!-- 是否显示指示器 -->
    <attr name="showIndicator" format="boolean" />
    <!-- 指示器背景 -->
    <attr name="indicatorBackground" format="reference|color" />
    <!-- 指示器 -->
    <attr name="indicatorDrawable" format="reference" />
    <!-- 指示器高度 -->
    <attr name="indicatorHeight" format="dimension" />
    <!-- 指示器间距 -->
    <attr name="indicatorSpacing" format="dimension" />
    <!-- 指示器的位置 -->
    <attr name="indicatorGravity" format="integer">
        <flag name="top" value="0x30" />
        <flag name="bottom" value="0x50" />
        <flag name="left" value="0x03" />
        <flag name="right" value="0x05" />
        <flag name="center_horizontal" value="0x01" />
    </attr>
    <!-- 指示器左内边距 -->
    <attr name="indicatorPaddingStart" format="dimension" />
    <!-- 指示器右内边距 -->
    <attr name="indicatorPaddingEnd" format="dimension" />
    <!-- 指示器左外边距 -->
    <attr name="indicatorMarginStart" format="dimension" />
    <!-- 指示器右外边距 -->
    <attr name="indicatorMarginEnd" format="dimension" />
    <!-- 指示器上外边距 -->
    <attr name="indicatorMarginTop" format="dimension" />
    <!-- 指示器下外边距 -->
    <attr name="indicatorMarginBottom" format="dimension" />

    <!-- 是否是数字指示器 -->
    <attr name="isNumberIndicator" format="boolean" />
    <!-- 数字指示器文字颜色 -->
    <attr name="numberIndicatorTextColor" format="reference|color" />
    <!-- 数字指示器文字大小 -->
    <attr name="numberIndicatorTextSize" format="dimension" />

    <!-- 是否开启自动轮播 -->
    <attr name="autoplay" format="boolean" />
    <!-- 是否开启循环播放 -->
    <attr name="loopPlay" format="boolean" />
    <!-- 自动轮播的时间间隔 -->
    <attr name="autoplayInterval" format="integer" />
    <!-- 页码切换过程的时间长度 -->
    <attr name="pageChangeDuration" format="integer" />
    <attr name="pageLimit" format="integer" />
    <!-- 页面区域距离 BannerView 顶部的距离 -->
    <attr name="pagePaddingTop" format="dimension" />
    <!-- 页面区域距离 BannerView 底部的距离 -->
    <attr name="pagePaddingBottom" format="dimension" />
    <!-- 页面区域距离 BannerView 左边的距离 -->
    <attr name="pagePaddingStart" format="dimension" />
    <!-- 页面区域距离 BannerView 右边 的距离 -->
    <attr name="pagePaddingEnd" format="dimension" />

    <!-- 是否显示文本 -->
    <attr name="showDisplayText" format="boolean" />
    <!-- 文本颜色 -->
    <attr name="displayTextColor" format="reference|color" />
    <!-- 文本大小 -->
    <attr name="displayTextSize" format="dimension" />
    <!-- 文本最多显示行数 -->
    <attr name="displayTextLines" format="integer" />
    <!-- 文本style Default text typeface style. -->
    <attr name="displayTextStyle"  format="integer">
        <flag name="normal" value="0" />
        <flag name="bold" value="1" />
        <flag name="italic" value="2" />
    </attr>
    <!-- 文本背景 -->
    <attr name="displayTextBackground" format="reference|color" />
    <!-- 文本背景高度 -->
    <attr name="displayTextBgHeight" format="dimension" />
    <attr name="displayTextMarginTop" format="dimension" />
    <attr name="displayTextMarginBottom" format="dimension" />
    <attr name="displayTextPaddingStart" format="dimension" />
    <attr name="displayTextPaddingEnd" format="dimension" />
    <!-- 文本相对于父布局的位置 -->
    <attr name="displayTextLayoutGravity" format="integer">
        <flag name="top" value="0x30" />
        <flag name="bottom" value="0x50" />
        <flag name="center_vertical" value="0x10" />
    </attr>
    <!-- 文本内部的位置 -->
    <attr name="displayTextGravity" format="integer">
        <flag name="left" value="0x03" />
        <flag name="right" value="0x05" />
        <flag name="center_horizontal" value="0x01" />
    </attr>
</declare-styleable>

混淆配置

-keepclassmembers class * implements androidx.viewbinding.ViewBinding {
	public static ** inflate(...);
}

License

Copyright 2022 zhzc0x

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.