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‎app/src/main/java/com/cxz/wanandroid/adapter/KnowledgePagerAdapter.kt‎

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@@ -16,6 +16,7 @@ class KnowledgePagerAdapter(val list: List<Knowledge>, fm: FragmentManager) : Fr
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private val fragments = mutableListOf<Fragment>()
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init {
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fragments.clear()
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list.forEach {
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fragments.add(KnowledgeFragment.getInstance(it.id))
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}

‎app/src/main/java/com/cxz/wanandroid/adapter/WeChatPagerAdapter.kt‎

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package com.cxz.wanandroid.adapter
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import android.support.v4.app.Fragment
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import android.support.v4.app.FragmentManager
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import android.support.v4.app.FragmentStatePagerAdapter
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import android.support.v4.view.PagerAdapter
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import android.text.Html
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import com.cxz.wanandroid.mvp.model.bean.WXChapterBean
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import com.cxz.wanandroid.ui.fragment.KnowledgeFragment
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/**
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* @author chenxz
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* @date 2018/10/28
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* @desc
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*/
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class WeChatPagerAdapter(private val list: MutableList<WXChapterBean>, fm: FragmentManager?)
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: FragmentStatePagerAdapter(fm) {
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private val fragments = mutableListOf<Fragment>()
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init {
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fragments.clear()
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list.forEach {
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fragments.add(KnowledgeFragment.getInstance(it.id))
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}
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}
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override fun getItem(position: Int): Fragment = fragments[position]
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override fun getCount(): Int = list.size
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override fun getPageTitle(position: Int): CharSequence? = Html.fromHtml(list[position].name)
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override fun getItemPosition(`object`: Any): Int = PagerAdapter.POSITION_NONE
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}

‎app/src/main/java/com/cxz/wanandroid/mvp/contract/WeChatContract.kt‎

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package com.cxz.wanandroid.mvp.contract
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import com.cxz.wanandroid.base.IPresenter
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import com.cxz.wanandroid.base.IView
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import com.cxz.wanandroid.mvp.model.bean.WXChapterBean
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/**
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* @author chenxz
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* @date 2018/10/28
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* @desc
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*/
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interface WeChatContract {
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interface View : IView {
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fun scrollToTop()
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fun showWXChapters(chapters: MutableList<WXChapterBean>)
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}
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interface Presenter : IPresenter<View> {
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fun getWXChapters()
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}
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}

‎app/src/main/java/com/cxz/wanandroid/mvp/model/WeChatModel.kt‎

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package com.cxz.wanandroid.mvp.model
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import com.cxz.wanandroid.base.BaseModel
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import com.cxz.wanandroid.http.RetrofitHelper
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import com.cxz.wanandroid.mvp.model.bean.HttpResult
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import com.cxz.wanandroid.mvp.model.bean.WXChapterBean
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import com.cxz.wanandroid.rx.SchedulerUtils
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import io.reactivex.Observable
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/**
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* @author chenxz
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* @date 2018/10/28
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* @desc
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*/
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class WeChatModel : BaseModel() {
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fun getWXChapters(): Observable<HttpResult<MutableList<WXChapterBean>>> {
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return RetrofitHelper.service.getWXChapters()
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.compose(SchedulerUtils.ioToMain())
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}
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}

‎app/src/main/java/com/cxz/wanandroid/mvp/presenter/WeChatPresenter.kt‎

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package com.cxz.wanandroid.mvp.presenter
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import com.cxz.wanandroid.base.BasePresenter
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import com.cxz.wanandroid.http.exception.ExceptionHandle
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import com.cxz.wanandroid.http.function.RetryWithDelay
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import com.cxz.wanandroid.mvp.contract.WeChatContract
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import com.cxz.wanandroid.mvp.model.WeChatModel
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/**
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* @author chenxz
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* @date 2018/10/28
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* @desc
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*/
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class WeChatPresenter : BasePresenter<WeChatContract.View>(), WeChatContract.Presenter {
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private val weChatModel: WeChatModel by lazy {
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WeChatModel()
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}
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override fun getWXChapters() {
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mView?.showLoading()
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val disposable = weChatModel.getWXChapters()
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.retryWhen(RetryWithDelay())
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.subscribe({ results ->
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mView?.run {
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if (results.errorCode != 0) {
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showError(results.errorMsg)
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} else {
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showWXChapters(results.data)
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}
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hideLoading()
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}
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}, { t ->
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mView?.apply {
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hideLoading()
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showError(ExceptionHandle.handleException(t))
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}
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})
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addSubscription(disposable)
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}
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}

‎app/src/main/java/com/cxz/wanandroid/ui/fragment/WeChatFragment.kt‎

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package com.cxz.wanandroid.ui.fragment
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import android.support.design.widget.TabLayout
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import com.cxz.wanandroid.R
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import com.cxz.wanandroid.adapter.WeChatPagerAdapter
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import com.cxz.wanandroid.base.BaseFragment
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import com.cxz.wanandroid.event.ColorEvent
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import com.cxz.wanandroid.mvp.contract.WeChatContract
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import com.cxz.wanandroid.mvp.model.bean.WXChapterBean
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import com.cxz.wanandroid.mvp.presenter.WeChatPresenter
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import com.cxz.wanandroid.utils.SettingUtil
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import kotlinx.android.synthetic.main.fragment_wechat.*
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import org.greenrobot.eventbus.Subscribe
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import org.greenrobot.eventbus.ThreadMode
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/**
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* @author chenxz
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* @date 2018/10/28
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* @desc
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*/
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class WeChatFragment : BaseFragment(), WeChatContract.View {
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companion object {
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fun getInstance(): WeChatFragment = WeChatFragment()
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}
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/**
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* Presenter
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*/
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private val mPresenter: WeChatPresenter by lazy {
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WeChatPresenter()
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}
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/**
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* datas
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*/
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private val datas = mutableListOf<WXChapterBean>()
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/**
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* ViewPagerAdapter
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*/
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private val viewPagerAdapter: WeChatPagerAdapter by lazy {
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WeChatPagerAdapter(datas, childFragmentManager)
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}
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override fun showLoading() {
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}
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override fun hideLoading() {
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}
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override fun showError(errorMsg: String) {
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}
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override fun attachLayoutRes(): Int = R.layout.fragment_wechat
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override fun initView() {
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mPresenter.attachView(this)
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viewPager.run {
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addOnPageChangeListener(TabLayout.TabLayoutOnPageChangeListener(tabLayout))
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}
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tabLayout.run {
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setupWithViewPager(viewPager)
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// TabLayoutHelper.setUpIndicatorWidth(tabLayout)
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addOnTabSelectedListener(TabLayout.ViewPagerOnTabSelectedListener(viewPager))
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addOnTabSelectedListener(onTabSelectedListener)
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}
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refreshColor(ColorEvent(true))
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}
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override fun lazyLoad() {
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mPresenter.getWXChapters()
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}
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@Subscribe(threadMode = ThreadMode.MAIN)
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fun refreshColor(event: ColorEvent) {
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if (event.isRefresh) {
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if (!SettingUtil.getIsNightMode()) {
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tabLayout.setBackgroundColor(SettingUtil.getColor())
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}
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}
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}
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override fun doReConnected() {
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if (datas.size == 0) {
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super.doReConnected()
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}
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}
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override fun showWXChapters(chapters: MutableList<WXChapterBean>) {
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chapters.let {
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datas.addAll(it)
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viewPager.run {
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adapter = viewPagerAdapter
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offscreenPageLimit = datas.size
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}
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}
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}
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/**
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* onTabSelectedListener
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*/
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private val onTabSelectedListener = object : TabLayout.OnTabSelectedListener {
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override fun onTabReselected(tab: TabLayout.Tab?) {
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}
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override fun onTabUnselected(tab: TabLayout.Tab?) {
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}
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override fun onTabSelected(tab: TabLayout.Tab?) {
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// 默认切换的时候，会有一个过渡动画，设为false后，取消动画，直接显示
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tab?.let {
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viewPager.setCurrentItem(it.position, false)
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}
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}
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}
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override fun scrollToTop() {
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if (viewPagerAdapter.count == 0) {
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return
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}
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val fragment: ProjectListFragment = viewPagerAdapter.getItem(viewPager.currentItem) as ProjectListFragment
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fragment.scrollToTop()
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}
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}

‎app/src/main/res/layout/fragment_wechat.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:app="http://schemas.android.com/apk/res-auto"
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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android:background="@color/viewBackground"
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android:orientation="vertical">
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<android.support.design.widget.TabLayout
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android:id="@+id/tabLayout"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:background="@color/colorPrimary"
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android:theme="@style/AppTheme.AppBarOverlay"
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app:tabGravity="center"
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app:tabIndicatorColor="@color/white"
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app:tabIndicatorHeight="@dimen/dp_2"
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app:tabMode="scrollable"
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app:tabTextAppearance="@style/TabTextStyle" />
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<android.support.v4.view.ViewPager
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android:id="@+id/viewPager"
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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app:layout_behavior="@string/appbar_scrolling_view_behavior" />
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</LinearLayout>

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