Add Android O (API 26) support

app/build.gradle

@@ -25,13 +25,13 @@ def versionBuild = 9
 def versionBuildNameSuffix = ""
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion '25.0.2'
+    compileSdkVersion 26
+    buildToolsVersion '26.0.0'
 
     defaultConfig {
         applicationId "co.timetableapp"
         minSdkVersion 14
-        targetSdkVersion 25
+        targetSdkVersion 26
         versionCode versionMajor * 1000 + versionMinor * 100 + versionPatch * 10 + versionBuild
         versionName "$versionMajor.$versionMinor.$versionPatch" + versionBuildNameSuffix
 

app/src/main/java/co/timetableapp/licenses/LibraryDetailActivity.kt

@@ -62,12 +62,12 @@ class LibraryDetailActivity : AppCompatActivity() {
     private fun setupLayout() {
         setupToolbar()
 
-        val container = findViewById(R.id.container) as LinearLayout
+        val container = findViewById<LinearLayout>(R.id.container)
         container.addView(makeLicenseCard(container))
     }
 
     private fun setupToolbar() {
-        val toolbar = findViewById(R.id.toolbar) as Toolbar
+        val toolbar = findViewById<Toolbar>(R.id.toolbar)
         setSupportActionBar(toolbar)
 
         with(supportActionBar!!) {
@@ -85,10 +85,9 @@ class LibraryDetailActivity : AppCompatActivity() {
         val card = layoutInflater.inflate(R.layout.item_license_card, container, false)
 
         with(card) {
-            (findViewById(R.id.title) as TextView).text = getString(R.string.title_license)
-            (findViewById(R.id.subtitle) as TextView).text = mLibrary!!.license.name
-            (findViewById(R.id.content_text) as TextView).text =
-                    mLibrary!!.license.getNotice(context)
+            findViewById<TextView>(R.id.title).text = getString(R.string.title_license)
+            findViewById<TextView>(R.id.subtitle).text = mLibrary!!.license.name
+            findViewById<TextView>(R.id.content_text).text = mLibrary!!.license.getNotice(context)
         }
 
         return card

app/src/main/java/co/timetableapp/licenses/LicensesActivity.kt

@@ -35,7 +35,7 @@ class LicensesActivity : AppCompatActivity() {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_container)
 
-        val toolbar = findViewById(R.id.toolbar) as Toolbar
+        val toolbar = findViewById<Toolbar>(R.id.toolbar)
         setSupportActionBar(toolbar)
 
         toolbar.navigationIcon = UiUtils.tintDrawable(this, R.drawable.ic_arrow_back_black_24dp)
@@ -85,7 +85,7 @@ class LicensesActivity : AppCompatActivity() {
     }
 
     private fun displayCards() {
-        val container = findViewById(R.id.container) as LinearLayout
+        val container = findViewById<LinearLayout>(R.id.container)
 
         Collections.sort(mLibraries)
 
@@ -98,10 +98,10 @@ class LicensesActivity : AppCompatActivity() {
         val card = layoutInflater.inflate(R.layout.item_license_card, container, false)
 
         with(card) {
-            (findViewById(R.id.title) as TextView).text = library.name
-            (findViewById(R.id.subtitle) as TextView).text = library.author
+            findViewById<TextView>(R.id.title).text = library.name
+            findViewById<TextView>(R.id.subtitle).text = library.author
 
-            (findViewById(R.id.content_text) as TextView).text = library.license.getNotice(context)
+            findViewById<TextView>(R.id.content_text).text = library.license.getNotice(context)
 
             setOnClickListener {
                 val intent = Intent(context, LibraryDetailActivity::class.java)

app/src/main/java/co/timetableapp/ui/NewItemSelectorFragment.kt

@@ -21,6 +21,7 @@ import android.support.design.widget.BottomSheetBehavior
 import android.support.design.widget.BottomSheetDialogFragment
 import android.support.design.widget.CoordinatorLayout
 import android.view.View
+import android.widget.FrameLayout
 import co.timetableapp.R
 import co.timetableapp.model.agenda.AgendaType
 
@@ -59,13 +60,13 @@ class NewItemSelectorFragment : BottomSheetDialogFragment() {
     }
 
     private fun setClickListeners(dialog: Dialog) {
-        dialog.findViewById(R.id.frameLayout_assignment).setOnClickListener {
+        dialog.findViewById<FrameLayout>(R.id.frameLayout_assignment).setOnClickListener {
             newItemAction?.invoke(it, dialog, AgendaType.ASSIGNMENT)
         }
-        dialog.findViewById(R.id.frameLayout_exam).setOnClickListener {
+        dialog.findViewById<FrameLayout>(R.id.frameLayout_exam).setOnClickListener {
             newItemAction?.invoke(it, dialog, AgendaType.EXAM)
         }
-        dialog.findViewById(R.id.frameLayout_event).setOnClickListener {
+        dialog.findViewById<FrameLayout>(R.id.frameLayout_event).setOnClickListener {
             newItemAction?.invoke(it, dialog, AgendaType.EVENT)
         }
     }

app/src/main/java/co/timetableapp/ui/agenda/AgendaActivity.kt

@@ -19,6 +19,7 @@ package co.timetableapp.ui.agenda
 import android.content.DialogInterface
 import android.content.Intent
 import android.os.Bundle
+import android.support.design.widget.FloatingActionButton
 import android.support.design.widget.NavigationView
 import android.support.design.widget.Snackbar
 import android.support.design.widget.TabLayout
@@ -59,7 +60,7 @@ class AgendaActivity : NavigationDrawerActivity() {
         const val DEFAULT_SHOW_PAST = false
     }
 
-    private val mViewPager by lazy { findViewById(R.id.viewPager) as ViewPager }
+    private val mViewPager by lazy { findViewById<ViewPager>(R.id.viewPager) }
 
     private var mShowCompleted = true
     private var mShowPast = DEFAULT_SHOW_PAST
@@ -75,14 +76,14 @@ class AgendaActivity : NavigationDrawerActivity() {
     }
 
     private fun setupToolbar() {
-        val toolbar = findViewById(R.id.toolbar) as Toolbar
+        val toolbar = findViewById<Toolbar>(R.id.toolbar)
         setSupportActionBar(toolbar)
     }
 
     private fun setupLayout() {
         mViewPager.adapter = PagerAdapter(supportFragmentManager)
 
-        val tabLayout = findViewById(R.id.tabLayout) as TabLayout
+        val tabLayout = findViewById<TabLayout>(R.id.tabLayout)
         tabLayout.setTabTextColors(
                 ContextCompat.getColor(this, R.color.mdu_text_white_secondary),
                 ContextCompat.getColor(this, R.color.mdu_text_white))
@@ -95,7 +96,7 @@ class AgendaActivity : NavigationDrawerActivity() {
     }
 
     private fun setupFab() {
-        findViewById(R.id.fab).setOnClickListener {
+        findViewById<FloatingActionButton>(R.id.fab).setOnClickListener {
             val dialogFragment = NewItemSelectorFragment()
 
             dialogFragment.onCreateNewAgendaItem { _, dialog, agendaType ->
@@ -184,11 +185,11 @@ class AgendaActivity : NavigationDrawerActivity() {
 
     override fun getSelfNavDrawerItem() = NAVDRAWER_ITEM_AGENDA
 
-    override fun getSelfToolbar() = findViewById(R.id.toolbar) as Toolbar
+    override fun getSelfToolbar(): Toolbar = findViewById(R.id.toolbar)
 
-    override fun getSelfDrawerLayout() = findViewById(R.id.drawerLayout) as DrawerLayout
+    override fun getSelfDrawerLayout(): DrawerLayout = findViewById(R.id.drawerLayout)
 
-    override fun getSelfNavigationView() = findViewById(R.id.navigationView) as NavigationView
+    override fun getSelfNavigationView(): NavigationView = findViewById(R.id.navigationView)
 
     /**
      * Interface definition for a callback to be invoked when the agenda filter has been updated.

app/src/main/java/co/timetableapp/ui/agenda/AgendaFragment.kt

@@ -134,15 +134,15 @@ class AgendaFragment : Fragment(), AgendaActivity.OnFilterChangeListener {
     private fun setupLayout() {
         setupList()
 
-        mPlaceholderLayout = mRootView.findViewById(R.id.placeholder) as FrameLayout
+        mPlaceholderLayout = mRootView.findViewById(R.id.placeholder)
         refreshPlaceholderStatus()
     }
 
     private fun setupList() {
         mDataHelper.createList(mItems)
 
         setupAdapter()
-        mRecyclerView = mRootView.findViewById(R.id.recyclerView) as RecyclerView
+        mRecyclerView = mRootView.findViewById(R.id.recyclerView)
         with(mRecyclerView) {
             layoutManager = LinearLayoutManager(activity)
             setHasFixedSize(true)

app/src/main/java/co/timetableapp/ui/agenda/AgendaItemsAdapter.kt

@@ -54,24 +54,19 @@ class AgendaItemsAdapter(
     }
 
     class HeaderViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
-        val textView: TextView = itemView.findViewById(R.id.text) as TextView
+        val textView: TextView = itemView.findViewById(R.id.text)
     }
 
     inner class AgendaViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
 
-        val colorView: View
-        val title: TextView
-        val subtitle: TextView
-        val info1: TextView
-        val info2: TextView
+        val colorView: View = itemView.findViewById(R.id.color)
+        val title: TextView = itemView.findViewById(R.id.text1)
+        val subtitle: TextView = itemView.findViewById(R.id.text2)
+        val info1: TextView = itemView.findViewById(R.id.text3)
+        val info2: TextView = itemView.findViewById(R.id.text4)
 
         init {
             itemView.setOnClickListener { onItemClick?.invoke(it, layoutPosition) }
-            colorView = itemView.findViewById(R.id.color)
-            title = itemView.findViewById(R.id.text1) as TextView
-            subtitle = itemView.findViewById(R.id.text2) as TextView
-            info1 = itemView.findViewById(R.id.text3) as TextView
-            info2 = itemView.findViewById(R.id.text4) as TextView
         }
 
     }

app/src/main/java/co/timetableapp/ui/assignments/AssignmentDetailActivity.kt

@@ -54,12 +54,12 @@ class AssignmentDetailActivity : ItemDetailActivity<Assignment>() {
         setupToolbar()
 
         val dateFormatter = DateUtils.FORMATTER_FULL_DATE
-        (findViewById(R.id.textView_date) as TextView).text = mItem.dueDate.format(dateFormatter)
+        findViewById<TextView>(R.id.textView_date).text = mItem.dueDate.format(dateFormatter)
 
-        val progressText = findViewById(R.id.textView_progress) as TextView
+        val progressText = findViewById<TextView>(R.id.textView_progress)
         progressText.text = getString(R.string.property_progress, mItem.completionProgress)
 
-        val seekBar = findViewById(R.id.seekBar) as SeekBar
+        val seekBar = findViewById<SeekBar>(R.id.seekBar)
         with(seekBar) {
             max = 20 // so it goes up in 5s
             progress = mItem.completionProgress / 5
@@ -77,12 +77,12 @@ class AssignmentDetailActivity : ItemDetailActivity<Assignment>() {
             })
         }
 
-        val detailText = findViewById(R.id.textView_detail) as TextView
+        val detailText = findViewById<TextView>(R.id.textView_detail)
         UiUtils.formatNotesTextView(this, detailText, mItem.detail)
     }
 
     private fun setupToolbar() {
-        val toolbar = findViewById(R.id.toolbar) as Toolbar
+        val toolbar = findViewById<Toolbar>(R.id.toolbar)
         setSupportActionBar(toolbar)
 
         toolbar.navigationIcon = UiUtils.tintDrawable(this, R.drawable.ic_arrow_back_black_24dp)
@@ -91,10 +91,10 @@ class AssignmentDetailActivity : ItemDetailActivity<Assignment>() {
         val cls = Class.create(this, mItem.classId)
         val subject = Subject.create(this, cls.subjectId)
 
-        val textViewTitle = findViewById(R.id.title) as TextView
+        val textViewTitle = findViewById<TextView>(R.id.title)
         textViewTitle.text = mItem.title
 
-        val textViewSubtitle = findViewById(R.id.subtitle) as TextView
+        val textViewSubtitle = findViewById<TextView>(R.id.subtitle)
         textViewSubtitle.text = subject.name
 
         val color = Color(subject.colorId)

app/src/main/java/co/timetableapp/ui/assignments/AssignmentEditActivity.kt

@@ -82,7 +82,7 @@ class AssignmentEditActivity : AppCompatActivity() {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_assignment_edit)
 
-        mToolbar = findViewById(R.id.toolbar) as Toolbar
+        mToolbar = findViewById(R.id.toolbar)
         setSupportActionBar(mToolbar)
 
         val extras = intent.extras
@@ -105,12 +105,12 @@ class AssignmentEditActivity : AppCompatActivity() {
     }
 
     private fun setupLayout() {
-        mTitleEditText = findViewById(R.id.editText_title) as EditText
+        mTitleEditText = findViewById(R.id.editText_title)
         if (!mIsNew) {
             mTitleEditText.setText(mAssignment!!.title)
         }
 
-        mDetailEditText = findViewById(R.id.editText_detail) as EditText
+        mDetailEditText = findViewById(R.id.editText_detail)
         if (!mIsNew) {
             mDetailEditText.setText(mAssignment!!.detail)
         }
@@ -120,7 +120,7 @@ class AssignmentEditActivity : AppCompatActivity() {
     }
 
     private fun setupClassText() {
-        mClassText = findViewById(R.id.textView_class) as TextView
+        mClassText = findViewById(R.id.textView_class)
 
         if (!mIsNew) {
             mClass = Class.create(this, mAssignment!!.classId)
@@ -149,7 +149,7 @@ class AssignmentEditActivity : AppCompatActivity() {
             }
 
             val titleView = layoutInflater.inflate(R.layout.dialog_title_with_padding, null)
-            (titleView.findViewById(R.id.title) as TextView).setText(R.string.choose_class)
+            titleView.findViewById<TextView>(R.id.title).setText(R.string.choose_class)
 
             builder.setView(recyclerView)
                     .setCustomTitle(titleView)
@@ -160,7 +160,7 @@ class AssignmentEditActivity : AppCompatActivity() {
     }
 
     private fun setupDateText() {
-        mDateText = findViewById(R.id.textView_date) as TextView
+        mDateText = findViewById(R.id.textView_date)
 
         if (!mIsNew) {
             mDueDate = mAssignment!!.dueDate

app/src/main/java/co/timetableapp/ui/base/ItemEditActivity.kt

@@ -104,7 +104,7 @@ abstract class ItemEditActivity<T : BaseItem> : AppCompatActivity() {
     }
 
     private fun setupToolbar(): Toolbar {
-        val toolbar = findViewById(R.id.toolbar) as Toolbar
+        val toolbar = findViewById<Toolbar>(R.id.toolbar)
         setSupportActionBar(toolbar)
 
         supportActionBar!!.setTitle(getTitleRes(mIsNew))

app/src/main/java/co/timetableapp/ui/classes/ClassDetailActivity.kt

@@ -23,6 +23,7 @@ import android.support.v4.content.ContextCompat
 import android.support.v7.widget.Toolbar
 import android.text.Html
 import android.view.View
+import android.view.ViewGroup
 import android.widget.LinearLayout
 import android.widget.TextView
 import co.timetableapp.R
@@ -68,7 +69,7 @@ class ClassDetailActivity : ItemDetailActivity<Class>() {
         setupToolbar()
         setupClassDetailCard()
 
-        findViewById(R.id.main_card).setBackgroundColor(
+        findViewById<View>(R.id.main_card).setBackgroundColor(
                 ContextCompat.getColor(this, mColor.getLightAccentColorRes(this)))
 
         setupRelatedItemCards()
@@ -77,7 +78,7 @@ class ClassDetailActivity : ItemDetailActivity<Class>() {
     private fun setupToolbar() {
         val subject = Subject.create(this, mItem.subjectId)
 
-        val toolbar = findViewById(R.id.toolbar) as Toolbar
+        val toolbar = findViewById<Toolbar>(R.id.toolbar)
         setSupportActionBar(toolbar)
 
         toolbar.navigationIcon = UiUtils.tintDrawable(this, R.drawable.ic_arrow_back_black_24dp)
@@ -161,19 +162,19 @@ class ClassDetailActivity : ItemDetailActivity<Class>() {
      */
     private fun setClassDetailTexts(locations: String, teachers: String, classTimes: String) {
         val locationVisibility = if (locations.isEmpty()) View.GONE else View.VISIBLE
-        findViewById(R.id.viewGroup_location).visibility = locationVisibility
+        findViewById<ViewGroup>(R.id.viewGroup_location).visibility = locationVisibility
         if (locations.isNotEmpty()) {
-            (findViewById(R.id.textView_location) as TextView).text = locations
+            findViewById<TextView>(R.id.textView_location).text = locations
         }
 
         val teacherVisibility = if (teachers.isEmpty()) View.GONE else View.VISIBLE
-        findViewById(R.id.viewGroup_teacher).visibility = teacherVisibility
+        findViewById<ViewGroup>(R.id.viewGroup_teacher).visibility = teacherVisibility
         if (teachers.isNotEmpty()) {
-            (findViewById(R.id.textView_teacher) as TextView).text = teachers
+            findViewById<TextView>(R.id.textView_teacher).text = teachers
         }
 
         // No need to check if it's empty - all class details must have a class time
-        val textViewTimes = findViewById(R.id.textView_times) as TextView
+        val textViewTimes = findViewById<TextView>(R.id.textView_times)
         textViewTimes.text = classTimes
     }
 
@@ -182,7 +183,7 @@ class ClassDetailActivity : ItemDetailActivity<Class>() {
      * exams for this class.
      */
     private fun setupRelatedItemCards() {
-        val cardContainer = findViewById(R.id.card_container) as LinearLayout
+        val cardContainer = findViewById<LinearLayout>(R.id.card_container)
 
         val assignmentsCard = CardOfItems.Builder(this, cardContainer)
                 .setTitle(R.string.title_assignments)