android复杂首页布局

示例图

原型图

分析：
通过分析原型图，分为4个模块

1.轮播图
2.公告
3.指示器
4.内容列表

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实现：
轮播图使用BGABanner-Android库
公告使用ViewFlipper控件
指示器切换使用MagicIndicator库
内容列表使用ViewPager+Fragment（RecyclerView）

实现图

其他依赖：

anko
BaseRecyclerViewAdapterHelper
glide
gson

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源码：
homepage

目录结构：
activity
-HomeViewPagerActivity
adapter
-ViewPagerAdapter
fragment
-TabFragment

---

代码：

activity_home_viewpager.xml

分析：
使用CoordinatorLayout+AppBarLayout+Toolbar实现tab头部依附效果

列表图

MagicIndicator指示器控件
ViewPager指示器滑动切换

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item_banner.xml

item_banner.xml实现了轮播图+公告

轮播图+广告

BGABanner轮播图
ViewFlipper公告

---

上下滚动动画：

anim/anim_come_in.xml

anim/anim_get_out.xml

---

HomeViewPagerActivity.kt

class HomeViewPagerActivity :AppCompatActivity() {

    var tabList = arrayListOf("tab1","tab2","tab3","tab4","tab5","tab6","tab7")
    var imgList:ArrayList = arrayListOf("https://images.unsplash.com/photo-1531026383433-6ed5a112afbc?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=c010c700aac502636ad0b579ce1274a4&auto=format&fit=crop&w=1650&q=80","https://images.unsplash.com/photo-1531075515553-b4d1f75ff534?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=b3f6b409e70fca36a74369d882e85f49&auto=format&fit=crop&w=1567&q=80","https://images.unsplash.com/photo-1531130744926-1d86103aebeb?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=28f240aae3de685fc4742f09c922f6f8&auto=format&fit=crop&w=1714&q=80")
    var mesList = arrayListOf("您的公告1","您的公告2","您的公告3")
    var dataList = arrayListOf("hhhhhh","sssss","aaa","bbb","zzz","aaa","bbb","kkk","aaa","bbb","shaomiao","aaa","bbb","ojj","aaa","bbb","fjkjk","aaa","bbb","dfkdkjk","aaa","bbb")


    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_home_viewpager)
        setSupportActionBar(toolbar)

        initBanner()
        initViewFlipper()
        initViewpager()
        initMagicIndicator()
    }

    fun initBanner() {
        banner.setAdapter(BGABanner.Adapter { banner, itemView, model, position ->
            Glide.with(itemView.context)
                    .load(model)
                    .apply(RequestOptions().placeholder(R.mipmap.ic_launcher).error(R.mipmap.ic_launcher).dontAnimate().centerCrop())
                    .into(itemView)
        })
        banner.setData(imgList, Arrays.asList("","",""))
        // 点击事件
        banner.setDelegate { banner, itemView, model, position -> toast(model.toString()+position) }
    }

    fun initViewFlipper() {
        for (i in mesList.indices) {
            var view = LayoutInflater.from(this).inflate(R.layout.item_textview,null)
            view.findViewById(R.id.text_view).text = mesList[i]
            view.setOnClickListener {
                toast(mesList[i]+i)
            }
            view_flipper.addView(view)
        }
        view_flipper.isAutoStart = true
    }

    fun initMagicIndicator() {
        var commonNavigator = CommonNavigator(this)
        commonNavigator.adapter = object : CommonNavigatorAdapter() {
            override fun getCount(): Int {
                return  if (tabList == null)0 else tabList.size
            }

            override fun getTitleView(p0: Context?, p1: Int): IPagerTitleView {
                var colorTransitionPagerTitleView = ColorTransitionPagerTitleView(p0)
                colorTransitionPagerTitleView.normalColor= ContextCompat.getColor(p0!!,R.color.abc_btn_colored_borderless_text_material)
                colorTransitionPagerTitleView.selectedColor = ContextCompat.getColor(p0!!,R.color.abc_btn_colored_borderless_text_material)
                colorTransitionPagerTitleView.text = tabList[p1].toUpperCase()

                colorTransitionPagerTitleView.setOnClickListener (View.OnClickListener {
                    view_pager.currentItem = p1

                })
                return colorTransitionPagerTitleView
            }
            override fun getIndicator(p0: Context?): IPagerIndicator {
                var indicator: LinePagerIndicator = LinePagerIndicator(p0)
                indicator.mode = LinePagerIndicator.MODE_EXACTLY
                indicator.setColors(ContextCompat.getColor(p0!!,R.color.abc_btn_colored_borderless_text_material))
                return indicator

            }
        }
        magic_indicator.navigator = commonNavigator
        ViewPagerHelper.bind(magic_indicator,view_pager)
    }

    fun initViewpager() {
        var adapter = ViewPagerAdapter(supportFragmentManager,tabList, Gson().toJson(dataList))
        view_pager.adapter = adapter
    }

}

tabList:指示器数据
imgList:轮播图数据
mesList:公告数据
dataList:列表数据

initBanner():初始化轮播图
initViewFlipper():初始化公告
initMagicIndicator():初始化指示器
initViewpager():初始化ViewPager

---

ViewPagerAdapter.kt ViewPager适配器

class ViewPagerAdapter(fm: FragmentManager?, var tabList:ArrayList, var listStr:Any) : FragmentPagerAdapter(fm){

    override fun getItemPosition(`object`: Any): Int {
        return PagerAdapter.POSITION_NONE
    }

    override fun instantiateItem(container: ViewGroup, position: Int): Any {
        var fragment :TabFragment = super.instantiateItem(container, position) as TabFragment
        fragment.updateArguments(position, listStr.toString())
        return fragment
    }

    override fun getCount(): Int {
        return  tabList.size
    }

    override fun getPageTitle(position: Int): CharSequence? {
        return tabList[position]
    }


    override fun getItem(position: Int): Fragment {
        return  TabFragment.create(position, Gson().toJson(listStr))
    }


    override fun notifyDataSetChanged() {
        super.notifyDataSetChanged()
    }
}

---

TabFragment.kt

class TabFragment: Fragment(){
    var pageType:Int = 0
    var data:String = ""
    var adapter:BaseQuickAdapter? = null

    companion object TabFragment{
        fun create(pageType:Int,data:String) : com.example.homepage.fragment.TabFragment {
            var f = TabFragment()
            var args = Bundle()
            args.putInt("position",pageType)
            args.putString("data",data)
            f.arguments=args
            return f
        }
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        var args: Bundle = arguments!!
        if (null!=args) {
            pageType = args.getInt("position")
            data = args.getString("data")
            Log.e("shaomiaodata",data)
        }
    }

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
        var view: View = inflater.inflate(R.layout.recycler_view,container,false)
        initRecyclerView(view)
        return view
    }

    fun initRecyclerView(view:View) {
        var layoutManager = LinearLayoutManager(context)
        layoutManager.orientation = OrientationHelper.VERTICAL
        var recycler_view = view.findViewById(R.id.recycler_view)
        recycler_view.layoutManager = layoutManager
        recycler_view.addItemDecoration(DividerItemDecoration(context, LinearLayoutManager.VERTICAL))

        var list1=  data!!.fromListJson()
        adapter = object : BaseQuickAdapter(R.layout.item_layout,list1 as List) {
            override fun convert(helper: BaseViewHolder?, item: String?) {
                helper!!.setText(R.id.item_tv,item)
                helper.addOnClickListener(R.id.item_tv)
            }
        }
        adapter!!.onItemChildClickListener = BaseQuickAdapter.OnItemChildClickListener { adapter, view, position ->
            toast("itemclick"+position)
        }
        recycler_view.adapter = adapter
    }
    // 解析json数据
    inline fun  String.fromListJson(charset: Charset = Charset.forName("UTF-8")): ArrayList? {
        val gson = GsonBuilder().create()
        return gson.fromJson>(this.toByteArray(charset).toString(charset),object : TypeToken>(){}.type)
    }

    fun updateArguments(pageType:Int,data:String) {
        this.pageType = pageType
        this.data = data
        var args: Bundle = arguments!!
        if (null!=args) {
            args.putInt("pageType",pageType)
            args.putString("data",data)
        }
    }

}

---

源码：
homepage