Remove unnecessary properties / move SharedElementCallback to anonymo…

…us object
DroidKaigi · Feb 4, 2018 · ceddbbe · ceddbbe
1 parent a87e33d
commit ceddbbe
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Showing 9 changed files with 70 additions and 59 deletions.
diff --git a/...main/java/io/github/droidkaigi/confsched2018/presentation/detail/SessionDetailActivity.kt b/...main/java/io/github/droidkaigi/confsched2018/presentation/detail/SessionDetailActivity.kt
@@ -1,6 +1,5 @@
 package io.github.droidkaigi.confsched2018.presentation.detail
 
-import android.annotation.TargetApi
 import android.app.Activity
 import android.app.SharedElementCallback
 import android.arch.lifecycle.ViewModelProvider
@@ -40,8 +39,6 @@ class SessionDetailActivity :
     @Inject lateinit var viewModelFactory: ViewModelProvider.Factory
     @Inject lateinit var drawerMenu: DrawerMenu
 
-    private var backPressed = false
-
     private val binding: ActivitySessionDetailBinding by lazy {
         DataBindingUtil
                 .setContentView<ActivitySessionDetailBinding>(
@@ -62,23 +59,6 @@ class SessionDetailActivity :
         intent.getStringExtra(EXTRA_SESSION_ID)
     }
 
-    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
-    private val sharedElementCallback = object : SharedElementCallback() {
-        override fun onMapSharedElements(
-                names: MutableList<String>?,
-                sharedElements: MutableMap<String, View>?) {
-            super.onMapSharedElements(names, sharedElements)
-
-            if (backPressed) {
-                val currentFragment = pagerAdapter.findFragmentByPosition(
-                        binding.detailSessionsPager,
-                        binding.detailSessionsPager.currentItem)
-                sharedElements?.clear()
-                currentFragment.hideButton()
-            }
-        }
-    }
-
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         supportPostponeEnterTransition()
@@ -93,9 +73,20 @@ class SessionDetailActivity :
                     sessions = result.data
                     bindSessions(sessions)
                     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
-                        setEnterSharedElementCallback(sharedElementCallback)
+                        setEnterSharedElementCallback(object : SharedElementCallback() {
+                            override fun onMapSharedElements(
+                                    names: MutableList<String>?,
+                                    sharedElements: MutableMap<String, View>?) {
+                                super.onMapSharedElements(names, sharedElements)
+
+                                val currentFragment = pagerAdapter.findFragmentByPosition(
+                                        binding.detailSessionsPager,
+                                        binding.detailSessionsPager.currentItem)
+                                sharedElements?.clear()
+                                currentFragment.hideButton()
+                            }
+                        })
                     }
-
                 }
                 is Result.Failure -> {
                     Timber.e(result.e)
@@ -121,11 +112,9 @@ class SessionDetailActivity :
         }
     }
 
-
     override fun supportFragmentInjector(): AndroidInjector<Fragment> = dispatchingAndroidInjector
 
     override fun onBackPressed() {
-        backPressed = true
         if (drawerMenu.closeDrawerIfNeeded()) {
             super.onBackPressed()
         }
@@ -158,7 +147,6 @@ class SessionDetailActivity :
         fun findFragmentByPosition(viewPager: ViewPager, position: Int): SessionDetailFragment {
             return instantiateItem(viewPager, position) as SessionDetailFragment
         }
-
     }
 
     companion object {
@@ -170,9 +158,11 @@ class SessionDetailActivity :
         }
 
         fun start(activity: Activity, session: Session, sharedElement: Pair<View, String>) {
-            val options = ActivityOptionsCompat.makeSceneTransitionAnimation(activity, sharedElement)
-            activity.startActivity(createIntent(activity, session.id, sharedElement),
-                    options.toBundle())
+            val options = ActivityOptionsCompat.makeSceneTransitionAnimation(
+                    activity,
+                    sharedElement)
+            val intent = createIntent(activity, session.id, sharedElement)
+            activity.startActivity(intent, options.toBundle())
         }
 
         fun createIntent(context: Context, sessionId: String): Intent {
@@ -189,6 +179,5 @@ class SessionDetailActivity :
                 putExtra(EXTRA_TRANSITION_NAME, sharedElement.second)
             }
         }
-
     }
 }
diff --git a/...main/java/io/github/droidkaigi/confsched2018/presentation/detail/SessionDetailFragment.kt b/...main/java/io/github/droidkaigi/confsched2018/presentation/detail/SessionDetailFragment.kt
@@ -1,5 +1,6 @@
 package io.github.droidkaigi.confsched2018.presentation.detail
 
+import android.annotation.TargetApi
 import android.arch.lifecycle.ViewModelProvider
 import android.arch.lifecycle.ViewModelProviders
 import android.graphics.drawable.Animatable
@@ -11,16 +12,15 @@ import android.text.TextUtils
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import android.view.ViewTreeObserver
 import io.github.droidkaigi.confsched2018.R
 import io.github.droidkaigi.confsched2018.databinding.FragmentSessionDetailBinding
 import io.github.droidkaigi.confsched2018.di.Injectable
 import io.github.droidkaigi.confsched2018.model.Level
 import io.github.droidkaigi.confsched2018.model.Session
 import io.github.droidkaigi.confsched2018.presentation.NavigationController
 import io.github.droidkaigi.confsched2018.presentation.Result
-import io.github.droidkaigi.confsched2018.presentation.common.view.SpeakersSummaryLayout
 import io.github.droidkaigi.confsched2018.util.SessionAlarm
+import io.github.droidkaigi.confsched2018.util.ext.addOnetimeOnPreDrawListener
 import io.github.droidkaigi.confsched2018.util.ext.context
 import io.github.droidkaigi.confsched2018.util.ext.drawable
 import io.github.droidkaigi.confsched2018.util.ext.observe
@@ -39,9 +39,6 @@ class SessionDetailFragment : Fragment(), Injectable {
         ViewModelProviders.of(activity!!, viewModelFactory).get(SessionDetailViewModel::class.java)
     }
 
-    val speakerSummary: SpeakersSummaryLayout
-        get() = binding.speakerSummary
-
     override fun onCreateView(
             inflater: LayoutInflater,
             container: ViewGroup?,
@@ -84,25 +81,16 @@ class SessionDetailFragment : Fragment(), Injectable {
 
         binding.toolbar.setNavigationOnClickListener { activity?.finish() }
 
-        binding.speakerSummary.viewTreeObserver.addOnPreDrawListener(
-                object : ViewTreeObserver.OnPreDrawListener {
-                    override fun onPreDraw(): Boolean {
-                        binding.speakerSummary.viewTreeObserver.removeOnPreDrawListener(this)
-
-                        val firstSessionId = (activity as? SessionDetailActivity)?.firstSessionId
-                                ?: return true
-                        val transitionName = arguments!!.getString(EXTRA_TRANSITION_NAME)
-                        if (!TextUtils.isEmpty(arguments!!.getString(EXTRA_TRANSITION_NAME))
-                                && firstSessionId == transitionName
-                                && Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
-                            ViewCompat.setTransitionName(
-                                    view.findViewById<View>(R.id.speaker_summary),
-                                    transitionName)
-                            activity?.supportStartPostponedEnterTransition()
-                        }
-                        return true
-                    }
-                })
+        val firstSessionId = (activity as? SessionDetailActivity)?.firstSessionId ?: return
+        val transitionName = arguments!!.getString(EXTRA_TRANSITION_NAME)
+
+        if (!TextUtils.isEmpty(transitionName)
+                && firstSessionId == transitionName
+                && Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+            initViewTransitions(view)
+        }
+
+
     }
 
     private fun bindSession(session: Session.SpeechSession) {
@@ -142,6 +130,16 @@ class SessionDetailFragment : Fragment(), Injectable {
         binding.fab.visibility = View.INVISIBLE
     }
 
+    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
+    private fun initViewTransitions(view: View) {
+        binding.speakerSummary.addOnetimeOnPreDrawListener {
+            ViewCompat.setTransitionName(
+                    view.findViewById<View>(R.id.speaker_summary),
+                    arguments!!.getString(EXTRA_TRANSITION_NAME))
+            activity?.supportStartPostponedEnterTransition()
+        }
+    }
+
     interface OnClickBottomAreaListener {
         fun onClickPrevSession()
         fun onClickNextSession()

diff --git a/...java/io/github/droidkaigi/confsched2018/presentation/favorite/FavoriteSessionsFragment.kt b/...java/io/github/droidkaigi/confsched2018/presentation/favorite/FavoriteSessionsFragment.kt
@@ -97,7 +97,9 @@ class FavoriteSessionsFragment : Fragment(), Injectable {
                 val sharedElement = Pair(
                         v.findViewById<View>(R.id.speaker_summary),
                         sessionItem.session.id)
-                navigationController.navigateToSessionDetailActivity(sessionItem.session, sharedElement)
+                navigationController.navigateToSessionDetailActivity(
+                        sessionItem.session,
+                        sharedElement)
             })
         }
         binding.sessionsRecycler.apply {

diff --git a/...ain/java/io/github/droidkaigi/confsched2018/presentation/search/SearchSessionsFragment.kt b/...ain/java/io/github/droidkaigi/confsched2018/presentation/search/SearchSessionsFragment.kt
@@ -76,7 +76,9 @@ class SearchSessionsFragment : Fragment(), Injectable {
                 val sharedElement = Pair(
                         v.findViewById<View>(R.id.speaker_summary),
                         sessionItem.session.id)
-                navigationController.navigateToSessionDetailActivity(sessionItem.session, sharedElement)
+                navigationController.navigateToSessionDetailActivity(
+                        sessionItem.session,
+                        sharedElement)
             })
         }
         binding.searchSessionRecycler.apply {

diff --git a/...main/java/io/github/droidkaigi/confsched2018/presentation/sessions/AllSessionsFragment.kt b/...main/java/io/github/droidkaigi/confsched2018/presentation/sessions/AllSessionsFragment.kt
@@ -113,7 +113,9 @@ class AllSessionsFragment : Fragment(), Injectable, CurrentSessionScroller {
                 val sharedElement = Pair(
                         v.findViewById<View>(R.id.speaker_summary),
                         sessionItem.session.id)
-                navigationController.navigateToSessionDetailActivity(sessionItem.session, sharedElement)
+                navigationController.navigateToSessionDetailActivity(
+                        sessionItem.session,
+                        sharedElement)
             })
         }
         binding.sessionsRecycler.apply {

diff --git a/...ain/java/io/github/droidkaigi/confsched2018/presentation/sessions/RoomSessionsFragment.kt b/...ain/java/io/github/droidkaigi/confsched2018/presentation/sessions/RoomSessionsFragment.kt
@@ -121,7 +121,9 @@ class RoomSessionsFragment : Fragment(), Injectable, CurrentSessionScroller {
                 val sharedElement = Pair(
                         v.findViewById<View>(R.id.speaker_summary),
                         sessionItem.session.id)
-                navigationController.navigateToSessionDetailActivity(sessionItem.session, sharedElement)
+                navigationController.navigateToSessionDetailActivity(
+                        sessionItem.session,
+                        sharedElement)
             })
         }
         binding.sessionsRecycler.apply {

diff --git a/...ain/java/io/github/droidkaigi/confsched2018/presentation/speaker/SpeakerDetailFragment.kt b/...ain/java/io/github/droidkaigi/confsched2018/presentation/speaker/SpeakerDetailFragment.kt
@@ -220,7 +220,9 @@ class SpeakerDetailFragment : Fragment(), Injectable {
                 val sharedElement = Pair(
                         v.findViewById<View>(R.id.speaker_summary),
                         sessionItem.session.id)
-                navigationController.navigateToSessionDetailActivity(sessionItem.session, sharedElement)
+                navigationController.navigateToSessionDetailActivity(
+                        sessionItem.session,
+                        sharedElement)
             })
         }
         val linearLayoutManager = LinearLayoutManager(context)

diff --git a/...rc/main/java/io/github/droidkaigi/confsched2018/presentation/topic/TopicDetailFragment.kt b/...rc/main/java/io/github/droidkaigi/confsched2018/presentation/topic/TopicDetailFragment.kt
@@ -84,7 +84,9 @@ class TopicDetailFragment : Fragment(), Injectable {
                 val sharedElement = Pair(
                         v.findViewById<View>(R.id.speaker_summary),
                         sessionItem.session.id)
-                navigationController.navigateToSessionDetailActivity(sessionItem.session, sharedElement)
+                navigationController.navigateToSessionDetailActivity(
+                        sessionItem.session,
+                        sharedElement)
             }
         }
         val linearLayoutManager = LinearLayoutManager(context)

diff --git a/app/src/main/java/io/github/droidkaigi/confsched2018/util/ext/ViewExt.kt b/app/src/main/java/io/github/droidkaigi/confsched2018/util/ext/ViewExt.kt
@@ -2,6 +2,7 @@ package io.github.droidkaigi.confsched2018.util.ext
 
 import android.os.Build
 import android.view.View
+import android.view.ViewTreeObserver
 
 fun View.setVisible(visible: Boolean) {
     if (visible) {
@@ -23,6 +24,17 @@ fun View.isGone() = visibility == View.GONE
 
 fun View.isVisible() = visibility == View.VISIBLE
 
+fun View.addOnetimeOnPreDrawListener(listener: () -> Unit) {
+    viewTreeObserver.addOnPreDrawListener(object : ViewTreeObserver.OnPreDrawListener {
+        override fun onPreDraw(): Boolean {
+            viewTreeObserver.removeOnPreDrawListener(this)
+            listener.invoke()
+
+            return true
+        }
+    })
+}
+
 var View.elevationForPostLollipop: Float
     get() = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
         elevation