android 如何在另一个片段中使用viewpager而不产生任何生命周期问题？

mf98qq94  于 2024-01-04  发布在  Android
关注(0)|答案(1)|浏览(160)

这是我使用viewpager的配置文件片段：

  1. @Suppress("DEPRECATION")
  2. class ProfileFragment : Fragment() {
  4.     private lateinit var viewPagerAdaptor: ViewPagerAdaptor
  6.     private val binding: FragmentProfileBinding by lazy {
  7.         FragmentProfileBinding.inflate(layoutInflater)
  8.     }
  10.     private lateinit var currentUserId: String
  12.     override fun onCreateView(
  13.         inflater: LayoutInflater, container: ViewGroup?,
  14.         savedInstanceState: Bundle?
  15.     ): View {
  16.         // User id
  17.         currentUserId = FirebaseAuth.getInstance().currentUser!!.uid
  19.         // Edit profile button
  20.         binding.editProfileButton.setOnClickListener{
  21.              startActivity(
  22.                  Intent(requireActivity(), EditProfileActivity::class.java)
  23.                      .putExtra("userId", currentUserId)
  24.                      .addFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT)
  25.              )
  26.         }
  28.         // add post button
  29.         binding.addPostButton.setOnClickListener{
  30.             startActivity(Intent(requireActivity(), AddPostActivity::class.java))
  31.         }
  33.         // Settings Button
  34.         binding.settingsButton.setOnClickListener {
  35.             startActivity(Intent(requireActivity(), SettingsActivity::class.java))
  36.         }
  38.         return binding.root
  39.     }
  41.     @SuppressLint("SetTextI18n")
  42.     private fun init() {
  44.         // Setup tabs
  45.         setUpTabs()
  46.     }
  48.     /*
  49.     * set up tab layout : My posts | My Incubates | My Bookmarks
  50.     * */
  51.     private fun setUpTabs() {
  52.         viewPagerAdaptor = ViewPagerAdaptor(requireActivity().supportFragmentManager)
  53.         viewPagerAdaptor.addFragments(MyPostFragment())
  54.         viewPagerAdaptor.addFragments(MyIncubatesFragment())
  55.         viewPagerAdaptor.addFragments(MyBookmarksFragment())
  56.         binding.profileViewPager.adapter = viewPagerAdaptor
  57.         binding.profileTabLayout.setupWithViewPager(binding.profileViewPager)
  59.         binding.profileTabLayout.getTabAt(0)!!.setIcon(R.drawable.grid_view)
  60.         binding.profileTabLayout.getTabAt(1)!!.setIcon(R.drawable.video_play_outlined)
  61.         binding.profileTabLayout.getTabAt(2)!!.setIcon(R.drawable.bookmark)
  62.     }
  63. }

字符串
这个实现存在生命周期问题，片段中的viewpager在我上面的实现中不能正常工作。
当从另一个Activity移动到this或onBackPressed时，我希望profile片段回到以前的状态。
请帮我解决这个问题。（以下是堆栈跟踪）

  1. 2023-12-11 10:26:46.327  1311-18277 AwareLog                system_server                        W  AwareMem_Reclaim: generateCompressList procsGroups error!
  2. 2023-12-11 10:26:46.698  1311-1355  ZrHung.App...rentWindow system_server                        D  handleMessage CHECK_TRANS_WINDOW_ERROR_MSG
  3. 2023-12-11 10:26:50.796  1311-18277 AwareLog                system_server                        W  AwareMem_Reclaim: generateCompressList procsGroups error!
  4. 2023-12-11 10:26:52.875  1311-1947  ZrHung.App...ocusWindow system_server                        D  FocusWindowErrorScene CheckFreezeScreen
  5. 2023-12-11 10:26:53.072  1311-1609  InputDispatcher         system_server                        W  channel '5fd2c33 com.bishal.incubator/com.bishal.incubator.profile.EditProfileActivity (server)' ~ Consumer closed input channel or an error occurred.  events=0x9
  6. 2023-12-11 10:26:53.074  1311-1609  InputDispatcher         system_server                        W  channel '8a81dad com.bishal.incubator/com.bishal.incubator.home.HomeActivity (server)' ~ Consumer closed input channel or an error occurred.  events=0x9
  7. 2023-12-11 10:26:53.074  1311-1609  InputDispatcher         system_server                        W  channel 'a489a9a com.bishal.incubator/com.bishal.incubator.add_post.AddPostActivity (server)' ~ Consumer closed input channel or an error occurred.  events=0x9
  8. 2023-12-11 10:26:53.074  1311-1609  InputDispatcher         system_server                        W  channel '1def340 com.bishal.incubator/com.bishal.incubator.home.HomeActivity (server)' ~ Consumer closed input channel or an error occurred.  events=0x9
  9. ---------------------------- PROCESS ENDED (18502) for package com.bishal.incubator ----------------------------
  10. 2023-12-11 10:26:53.303 18181-19220 DropBoxUtil             com.google.android.gms.persistent    E  [AppErrors] null InputStream [CONTEXT service_id=254 ]
  11.                                                                                                     java.io.IOException: null InputStream
  12.                                                                                                         at cgon.d(:com.google.android.gms@[email protected] (100400-587848529):209)
  13.                                                                                                         at cgmv.l(:com.google.android.gms@[email protected] (100400-587848529):7)
  14.                                                                                                         at cgmp.apply(:com.google.android.gms@[email protected] (100400-587848529):37)
  15.                                                                                                         at rlc.apply(:com.google.android.gms@[email protected] (100400-587848529):5)
  16.                                                                                                         at rlo.apply(:com.google.android.gms@[email protected] (100400-587848529):45)
  17.                                                                                                         at cyxp.a(:com.google.android.gms@[email protected] (100400-587848529):3)
  18.                                                                                                         at dhiq.a(:com.google.android.gms@[email protected] (100400-587848529):13)
  19.                                                                                                         at dnvc.d(:com.google.android.gms@[email protected] (100400-587848529):3)
  20.                                                                                                         at dnve.run(:com.google.android.gms@[email protected] (100400-587848529):42)
  21.                                                                                                         at dnwp.execute(:com.google.android.gms@[email protected] (100400-587848529):1)
  22.                                                                                                         at dnuy.h(:com.google.android.gms@[email protected] (100400-587848529):1)
  23.                                                                                                         at dnuy.hi(:com.google.android.gms@[email protected] (100400-587848529):40)
  24.                                                                                                         at dnve.g(:com.google.android.gms@[email protected] (100400-587848529):13)
  25.                                                                                                         at cyxf.a(:com.google.android.gms@[email protected] (100400-587848529):20)
  26.                                                                                                         at dhio.a(:com.google.android.gms@[email protected] (100400-587848529):13)
  27.                                                                                                         at dnwv.a(:com.google.android.gms@[email protected] (100400-587848529):20)
  28.                                                                                                         at dnyy.a(:com.google.android.gms@[email protected] (100400-587848529):3)
  29.                                                                                                         at dnxz.run(:com.google.android.gms@[email protected] (100400-587848529):21)
  30.                                                                                                         at dnza.run(:com.google.android.gms@[email protected] (100400-587848529):5)
  31.                                                                                                         at dnwx.run(:com.google.android.gms@[email protected] (100400-587848529):53)
  32.                                                                                                         at dnwp.execute(:com.google.android.gms@[email protected] (100400-587848529):1)
  33.                                                                                                         at dnwx.execute(:com.google.android.gms@[email protected] (100400-587848529):76)
  34.                                                                                                         at dnuy.h(:com.google.android.gms@[email protected] (100400-587848529):1)
  35.                                                                                                         at dnuy.hi(:com.google.android.gms@[email protected] (100400-587848529):40)
  36.                                                                                                         at dnwz.c(:com.google.android.gms@[email protected] (100400-587848529):31)
  37.                                                                                                         at cyxj.i(:com.google.android.gms@[email protected] (100400-587848529):18)
  38.                                                                                                         at cyxo.a(:com.google.android.gms@[email protected] (100400-587848529):10)
  39.                                                                                                         at dhiq.a(:com.google.android.gms@[email protected] (100400-587848529):13)
  40.                                                                                                         at dnvc.d(:com.google.android.gms@[email protected] (100400-587848529):3)
  41.                                                                                                         at dnve.run(:com.google.android.gms@[email protected] (100400-587848529):42)
  42.                                                                                                         at dnwp.execute(:com.google.android.gms@[email protected] (100400-587848529):1)
  43.                                                                                                         at dnuy.h(:com.google.android.gms@[email protected] (100400-587848529):1)
  44.                                                                                                         at dnuy.hi(:com.google.android.gms@[email protected] (100400-587848529):40)
  45.                                                                                                         at dnve.g(:com.google.android.gms@[email protected] (100400-587848529):13)
  46.                                                                                                         at cyxr.a(:com.google.android.gms@[email protected] (100400-587848529):20)
  47.                                                                                                         at dhio.a(:com.google.android.gms@[email protected] (100400-587848529):13)
  48.                                                                                                         at dnwv.a(:com.google.android.gms@[email protected] (100400-587848529):20)
  49.                                                                                                         at dnyy.a(:com.google.android.gms@[email protected] (100400-587848529):3)
  50.                                                                                                         at dnxz.run(:com.google.android.gms@[email protected] (100400-587848529):21)
  51.                                                                                                         at dnza.run(:com.google.android.gms@[email protected] (100400-587848529):5)
  52.                                                                                                         at dnwx.run(:com.google.android.gms@[email protected] (100400-587848529):53)
  53.                                                                                                         at dnwp.execute(:com.google.android.gms@[email protected] (100400-587848529):1)
  54.                                                                                                         at dnwx.execute(:com.google.android.gms@[email protected] (100400-587848529):76)
  55.                                                                                                         at dnuy.h(:com.google.android.gms@[email protected] (100400-587848529):1)
  56.                                                                                                         at dnuy.hi(:com.google.android.gms@[email protected] (100400-587848529):40)
  57.                                                                                                         at dnwz.c(:com.google.android.gms@[email protected] (100400-587848529):31)
  58.                                                                                                         at cyxy.c(:com.google.android.gms@[email protected] (100400-587848529):56)
  59.                                                                                                         at cyxy.b(:com.google.android.gms@[email protected] (100400-587848529):10)
  60.                                                                                                         at com.google.android.gms.stats.service.DropBoxEntryAddedChimeraService.a(:com.google.android.gms@[email protected] (100400-587848529):375)
  61. ---------------------------- PROCESS STARTED (19232) for package com.bishal.incubator ----------------------------

型

android

1条答案

按热度按时间
chy5wohz

chy5wohz1#

解决方案是使用（在setUpTabs()下）：

  1. viewPagerAdaptor = ViewPagerAdaptor(childFragmentManager)

字符串
而不是：

  1. viewPagerAdaptor = ViewPagerAdaptor(requireActivity().supportFragmentManager)

型
下面是ViewPagerAdaptor类：

  1. class ViewPagerAdaptor (fragmentManager: FragmentManager) :
  2.     FragmentPagerAdapter(fragmentManager, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT) {
  4.     private val fragmentList = mutableListOf<Fragment>()
  5.     override fun getCount(): Int {
  6.         return fragmentList.size
  7.     }
  9.     override fun getItem(position: Int): Fragment {
  10.         return fragmentList[position]
  11.     }
  13.     fun addFragments(fragment: Fragment) {
  14.         fragmentList.add(fragment)
  15.     }
  17. }

型

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