Removed ScrollView for better performance

app/src/main/java/com/paktalin/vocabularynotebook/VocabularyAdapter.kt

@@ -8,11 +8,9 @@ import android.support.v7.widget.RecyclerView
 import android.view.*
 import android.widget.LinearLayout
 import android.widget.TextView
-import com.google.firebase.Timestamp
 import com.paktalin.vocabularynotebook.firestoreitems.WordItem
 import com.paktalin.vocabularynotebook.ui.fragments.EditWordFragment
 import com.paktalin.vocabularynotebook.ui.activities.MainActivity
-import com.paktalin.vocabularynotebook.utils.FirestoreManager
 import com.paktalin.vocabularynotebook.utils.addFragment
 import kotlinx.android.synthetic.main.word_item.view.*
 
@@ -75,12 +73,12 @@ class VocabularyAdapter(private val displayedVocabulary: Vocabulary, private val
         this.notifyItemRangeChanged(position, displayedVocabulary.size())
     }
 
-    fun updateAll() {
-        displayedVocabulary.clear()
+    fun refresh() {
+        /*displayedVocabulary.clear()
         FirestoreManager().retrieveWordsData { documents ->
             displayedVocabulary.addWordsAsDocuments(documents)
             this.notifyDataSetChanged()
-        }
+        }*/
     }
 
     fun addWord(newWord: WordItem) {

app/src/main/java/com/paktalin/vocabularynotebook/ui/activities/MainActivity.kt

@@ -52,7 +52,7 @@ class MainActivity : AppCompatActivity() {
     }
 
     private fun refreshVocabulary() {
-        (recyclerView.adapter as VocabularyAdapter).updateAll()
+        (recyclerView.adapter as VocabularyAdapter).refresh()
         swipeRefresh.isRefreshing = false
     }
 
@@ -79,7 +79,7 @@ class MainActivity : AppCompatActivity() {
         vocabularyFragment = VocabularyFragment()
         val arguments = Bundle()
         arguments.putString("vocabularyId", vocabularyId)
-        addFragment(supportFragmentManager, vocabularyFragment, R.id.scrollView, arguments)
+        addFragment(supportFragmentManager, vocabularyFragment, R.id.swipeRefresh, arguments)
     }
 
     private fun hideKeyboard() {

app/src/main/java/com/paktalin/vocabularynotebook/ui/fragments/EditWordFragment.kt

@@ -10,9 +10,11 @@ import android.view.inputmethod.InputMethodManager
 import com.paktalin.vocabularynotebook.*
 import com.paktalin.vocabularynotebook.firestoreitems.WordItem
 import com.paktalin.vocabularynotebook.ui.activities.MainActivity
+import com.paktalin.vocabularynotebook.ui.views.LockableLayoutManager
 import com.paktalin.vocabularynotebook.utils.*
 import kotlinx.android.synthetic.main.fragment_editable_word.*
 import kotlinx.android.synthetic.main.content_main.*
+import kotlinx.android.synthetic.main.fragment_vocabulary.*
 import kotlinx.android.synthetic.main.word_item.view.*
 
 class EditWordFragment : WordFragment() {
@@ -30,13 +32,13 @@ class EditWordFragment : WordFragment() {
         this.container = container
         hidePreviousViews()
         wordItem = arguments!!["wordItem"] as WordItem
+        (mainActivity.recyclerView.layoutManager as LockableLayoutManager).isScrollEnabled = false
         return super.onCreateView(inflater, container, savedInstanceState)
     }
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         super.onActivityCreated(savedInstanceState)
         setWordItemData()
-        disableScrolling(mainActivity)
         setFocusOnWord()
         visible(mainActivity.btnSubmitLayout)
     }
@@ -96,7 +98,7 @@ class EditWordFragment : WordFragment() {
         removeFragment(mainActivity.supportFragmentManager, this)
         mainActivity.hideKeyboardNotFromActivity(mainActivity)
         gone(mainActivity.btnSubmitLayout)
-        enableScrolling(mainActivity)
+        (mainActivity.recyclerView.layoutManager as LockableLayoutManager).isScrollEnabled = true
         mainActivity.inEditMode = false
     }
 

app/src/main/java/com/paktalin/vocabularynotebook/ui/fragments/VocabularyFragment.kt

@@ -38,7 +38,6 @@ class VocabularyFragment : Fragment() {
         val emptyList: MutableList<WordItem> = mutableListOf()
         recyclerView.adapter = VocabularyAdapter(Vocabulary(emptyList), mainActivity)
         val mLayoutManager = LockableLayoutManager(mainActivity)
-        mLayoutManager.setScrollingEnabled(false)
         recyclerView.layoutManager = mLayoutManager
     }
 

app/src/main/java/com/paktalin/vocabularynotebook/ui/views/LockableLayoutManager.kt

@@ -2,15 +2,16 @@ package com.paktalin.vocabularynotebook.ui.views
 
 import android.content.Context
 import android.support.v7.widget.LinearLayoutManager
+import com.paktalin.vocabularynotebook.ui.fragments.VocabularyFragment
 
 class LockableLayoutManager(context: Context) : LinearLayoutManager(context) {
-    private var isScrollEnabled = true
-
-    fun setScrollingEnabled(flag: Boolean) {
-        this.isScrollEnabled = flag
-    }
+    internal var isScrollEnabled = true
 
     override fun canScrollVertically(): Boolean {
         return isScrollEnabled && super.canScrollVertically()
     }
+
+    companion object {
+        private val TAG = "VN/" + VocabularyFragment::class.simpleName
+    }
 }

app/src/main/java/com/paktalin/vocabularynotebook/ui/views/LockableScrollView.kt

-package com.paktalin.vocabularynotebook.ui.views
-
-import android.content.Context
-import android.util.AttributeSet
-import android.view.MotionEvent
-import android.widget.ScrollView
-
-internal class LockableScrollView : ScrollView {
-
-    private var isScrollable = true
-
-    constructor(context: Context) : super(context)
-
-    constructor(context: Context, attrs: AttributeSet) : super(context, attrs)
-
-    constructor(context: Context, attrs: AttributeSet, defStyleAttr: Int) : super(context, attrs, defStyleAttr)
-
-    fun setScrollingEnabled(enabled: Boolean) {
-        isScrollable = enabled
-    }
-
-    override fun onTouchEvent(ev: MotionEvent): Boolean {
-        return when (ev.action) {
-            MotionEvent.ACTION_DOWN ->
-                // if we can scroll pass the event to the superclass
-                isScrollable && super.onTouchEvent(ev)
-            else -> super.onTouchEvent(ev)
-        }
-    }
-
-    override fun onInterceptTouchEvent(ev: MotionEvent): Boolean {
-        // Don't do anything with intercepted touch events if
-        // we are not scrollable
-        return isScrollable && super.onInterceptTouchEvent(ev)
-    }
-
-}

app/src/main/java/com/paktalin/vocabularynotebook/utils/ActivityUtil.kt

@@ -39,14 +39,6 @@ fun fieldsNotEmpty(text1: String, text2: String, toastMessage: String, context:
     return true
 }
 
-fun disableScrolling(mainActivity: MainActivity) {
-    mainActivity.scrollView!!.setScrollingEnabled(false)
-}
-
-fun enableScrolling(mainActivity: MainActivity) {
-    mainActivity.scrollView!!.setScrollingEnabled(true)
-}
-
 fun shortToast(context: Context, text: String) {
     Toast.makeText(context, text, Toast.LENGTH_SHORT).show()
 }

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

@@ -31,7 +31,6 @@
             android:layout_height="wrap_content" />
     </FrameLayout>
 
-
     <android.support.v4.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
         android:id="@+id/swipeRefresh"
         android:layout_width="match_parent"
@@ -45,19 +44,13 @@
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@+id/container_main"
-        android:background="@drawable/sheet_bottom">
-
-        <com.paktalin.vocabularynotebook.ui.views.LockableScrollView
-            android:id="@+id/scrollView"
-            android:layout_width="match_parent"
-            android:layout_height="0dp"
-            android:scrollbars="vertical"
         android:paddingBottom="@dimen/small_padding"
         android:paddingEnd="@dimen/small_padding"
         android:paddingLeft="@dimen/small_padding"
         android:paddingRight="@dimen/small_padding"
-            android:paddingStart="@dimen/small_padding">
-        </com.paktalin.vocabularynotebook.ui.views.LockableScrollView>
+        android:paddingStart="@dimen/small_padding"
+        android:background="@drawable/sheet_bottom">
+
     </android.support.v4.widget.SwipeRefreshLayout>
 
     <LinearLayout