Issue#5 Shows basic example of testing NavController usage
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20 changed files with 383 additions and 2 deletions
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<?xml version="1.0" encoding="utf-8"?>
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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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package="org.fnives.test.showcase.examplecase.navcontroller">
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<application>
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<activity android:name=".NavControllerActivity" android:exported="true"/>
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</application>
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</manifest>
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package org.fnives.test.showcase.examplecase.navcontroller
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import android.os.Bundle
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import android.view.View
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import android.widget.TextView
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import androidx.fragment.app.Fragment
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import androidx.navigation.fragment.navArgs
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class DetailFragment : Fragment(R.layout.fragment_detail) {
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private val args by navArgs<DetailFragmentArgs>()
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override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
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super.onViewCreated(view, savedInstanceState)
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(view as TextView).text = getString(R.string.home_item, args.position)
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}
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}
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package org.fnives.test.showcase.examplecase.navcontroller
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import android.os.Bundle
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import android.view.LayoutInflater
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import android.view.View
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import android.view.ViewGroup
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import android.widget.Button
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import androidx.fragment.app.Fragment
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import androidx.navigation.fragment.findNavController
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import androidx.recyclerview.widget.LinearLayoutManager
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import androidx.recyclerview.widget.RecyclerView
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class HomeFragment : Fragment(R.layout.fragment_home) {
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override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
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super.onViewCreated(view, savedInstanceState)
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val recycler = view.findViewById<RecyclerView>(R.id.recycler)
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recycler.layoutManager = LinearLayoutManager(view.context)
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recycler.adapter = Adapter(onClick = {
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if (findNavController().currentDestination?.id != R.id.homeFragment) return@Adapter
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findNavController().navigate(HomeFragmentDirections.actionHomeFragmentToDetailFragment(it))
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})
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}
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class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {
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constructor(parent: ViewGroup) : this(LayoutInflater.from(parent.context).inflate(R.layout.item_home, parent, false))
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}
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class Adapter(
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private val count: Int = 30,
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private val onClick: (Int) -> Unit,
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) : RecyclerView.Adapter<ViewHolder>() {
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override fun getItemCount(): Int = count
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override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder =
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ViewHolder(parent)
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override fun onBindViewHolder(holder: ViewHolder, position: Int) {
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val context = holder.itemView.context
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(holder.itemView as Button).text = context.getString(R.string.home_item, position)
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holder.itemView.setOnClickListener { onClick(position) }
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}
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}
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}
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package org.fnives.test.showcase.examplecase.navcontroller
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import android.os.Bundle
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import androidx.appcompat.app.AppCompatActivity
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// to see the actual screen, not just in test use:
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// adb shell am start -n org.fnives.test.showcase/org.fnives.test.showcase.examplecase.navcontroller.NavControllerActivity
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// after installing the apk
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class NavControllerActivity : AppCompatActivity() {
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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setContentView(R.layout.activity_nav_controller)
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}
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}
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<?xml version="1.0" encoding="utf-8"?>
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<androidx.constraintlayout.widget.ConstraintLayout 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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<androidx.appcompat.widget.Toolbar
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android:id="@+id/toolbar"
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android:layout_width="0dp"
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android:layout_height="wrap_content"
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app:title="@string/activity_title"
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app:layout_constraintEnd_toEndOf="parent"
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app:layout_constraintStart_toStartOf="parent"
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app:layout_constraintTop_toTopOf="parent" />
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<androidx.fragment.app.FragmentContainerView
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android:id="@+id/nav_host_container"
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android:name="androidx.navigation.fragment.NavHostFragment"
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android:layout_width="0dp"
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android:layout_height="0dp"
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app:defaultNavHost="true"
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app:layout_constraintBottom_toBottomOf="parent"
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app:layout_constraintEnd_toEndOf="parent"
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app:layout_constraintStart_toStartOf="parent"
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app:layout_constraintTop_toBottomOf="@id/toolbar"
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app:navGraph="@navigation/nav_example" />
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</androidx.constraintlayout.widget.ConstraintLayout>
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<?xml version="1.0" encoding="utf-8"?>
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<TextView xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:tools="http://schemas.android.com/tools"
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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android:gravity="center"
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android:textAppearance="?attr/textAppearanceHeadline1"
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tools:text="Item 5">
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</TextView>
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<?xml version="1.0" encoding="utf-8"?>
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<androidx.recyclerview.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:tools="http://schemas.android.com/tools"
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android:id="@+id/recycler"
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android:layout_width="match_parent"
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tools:listitem="@layout/item_home"
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tools:itemCount="30"
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android:layout_height="match_parent" />
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<?xml version="1.0" encoding="utf-8"?>
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<Button xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:tools="http://schemas.android.com/tools"
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android:id="@+id/item_cta"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:minHeight="48dp"
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android:textAppearance="?attr/textAppearanceHeadline4"
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tools:text="Item: 5" />
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<?xml version="1.0" encoding="utf-8"?>
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<navigation 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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xmlns:tools="http://schemas.android.com/tools"
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android:id="@+id/nav_example.xml"
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app:startDestination="@id/homeFragment">
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<fragment
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android:id="@+id/homeFragment"
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android:name="org.fnives.test.showcase.examplecase.navcontroller.HomeFragment"
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tools:layout="@layout/fragment_home"
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android:label="HomeFragment" >
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<action
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android:id="@+id/action_homeFragment_to_detailFragment"
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app:destination="@id/detailFragment" />
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</fragment>
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<fragment
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android:id="@+id/detailFragment"
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android:name="org.fnives.test.showcase.examplecase.navcontroller.DetailFragment"
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tools:layout="@layout/fragment_detail"
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android:label="DetailFragment" >
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<argument
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android:name="position"
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app:argType="integer" />
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</fragment>
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</navigation>
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<?xml version="1.0" encoding="utf-8"?>
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<resources>
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<string name="home_item">Item %1$d</string>
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<string name="activity_title">Nav Controller Example</string>
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</resources>
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