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
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
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
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