UI test

app/build.gradle

@@ -25,13 +25,18 @@ android {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
+    buildFeatures {
+        viewBinding true
+    }
 }
 
 dependencies {
 
     implementation 'androidx.appcompat:appcompat:1.3.0'
     implementation 'com.google.android.material:material:1.4.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    implementation 'androidx.navigation:navigation-fragment:2.4.1'
+    implementation 'androidx.navigation:navigation-ui:2.4.1'
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.3'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'

app/src/androidTest/java/com/example/citylist/MainActivityTest.java

@@ -76,4 +76,16 @@ public void testListViewClickAndBack(){
         Espresso.pressBack(); //Back button
     }
 
+    @Test
+    public void labtest()
+    {
+        onView(withId(R.id.button_add)).perform(click()); //Click add button to add a city to the list
+        onView(withId(R.id.editText_name)).perform(ViewActions.typeText("Dhaka")); //Type a city name
+        onData(anything()).inAdapterView(withId(R.id.city_list)).atPosition(0).perform(click());
+
+        onView(withId(R.id.second)).check(matches(isDisplayed()));
+        onView(withText("Edmonton")).check(matches(isDisplayed()));
+        onView(withId(R.id.button)).perform(click());
+        onView(withId(R.id.main)).check(matches(isDisplayed()));
+    }
 }

app/src/androidTest/java/com/example/citylist/ShowActivityTest.java

@@ -0,0 +1,12 @@
+package com.example.citylist;
+
+import static org.junit.Assert.*;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+
+public class ShowActivityTest {
+
+}

app/src/main/AndroidManifest.xml

@@ -9,6 +9,13 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.CityList" >
+        <activity
+            android:name=".ShowActivity"
+            android:exported="false" >
+            <meta-data
+                android:name="android.app.lib_name"
+                android:value="" />
+        </activity>
         <activity
             android:name=".MainActivity"
             android:exported="true" >

app/src/main/java/com/example/citylist/FirstFragment.java

@@ -0,0 +1,47 @@
+package com.example.citylist;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
+import androidx.navigation.fragment.NavHostFragment;
+
+import com.example.citylist.databinding.FragmentFirstBinding;
+
+public class FirstFragment extends Fragment {
+
+    private FragmentFirstBinding binding;
+
+    @Override
+    public View onCreateView(
+            LayoutInflater inflater, ViewGroup container,
+            Bundle savedInstanceState
+    ) {
+
+        binding = FragmentFirstBinding.inflate(inflater, container, false);
+        return binding.getRoot();
+
+    }
+
+    public void onViewCreated(@NonNull View view, Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+
+        binding.buttonFirst.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                NavHostFragment.findNavController(FirstFragment.this)
+                        .navigate(R.id.action_FirstFragment_to_SecondFragment);
+            }
+        });
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        binding = null;
+    }
+
+}

app/src/main/java/com/example/citylist/MainActivity.java

@@ -1,8 +1,11 @@
 package com.example.citylist;
 
 import androidx.appcompat.app.AppCompatActivity;
+
+import android.content.Intent;
 import android.os.Bundle;
 import android.view.View;
+import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
 import android.widget.Button;
 import android.widget.EditText;
@@ -56,6 +59,14 @@ public void onClick(View v) {
             }
         });
 
+        cityList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
+            @Override
+            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
+                Intent intent = new Intent(MainActivity.this,ShowActivity.class);
+                intent.putExtra("cityname",dataList.get(i));
+                startActivity(intent);
+            }
+        });
     }
 
 

app/src/main/java/com/example/citylist/SecondFragment.java

@@ -0,0 +1,47 @@
+package com.example.citylist;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
+import androidx.navigation.fragment.NavHostFragment;
+
+import com.example.citylist.databinding.FragmentSecondBinding;
+
+public class SecondFragment extends Fragment {
+
+    private FragmentSecondBinding binding;
+
+    @Override
+    public View onCreateView(
+            LayoutInflater inflater, ViewGroup container,
+            Bundle savedInstanceState
+    ) {
+
+        binding = FragmentSecondBinding.inflate(inflater, container, false);
+        return binding.getRoot();
+
+    }
+
+    public void onViewCreated(@NonNull View view, Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+
+        binding.buttonSecond.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                NavHostFragment.findNavController(SecondFragment.this)
+                        .navigate(R.id.action_SecondFragment_to_FirstFragment);
+            }
+        });
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        binding = null;
+    }
+
+}

app/src/main/java/com/example/citylist/ShowActivity.java

@@ -0,0 +1,33 @@
+package com.example.citylist;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.TextView;
+
+public class ShowActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_show2);
+        Intent intent=getIntent();
+        String s  = intent.getStringExtra("cityname");
+
+        TextView textview = findViewById(R.id.textView);
+        textview.setText(s);
+
+        Button button = findViewById(R.id.button);
+        button.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Intent intent1 = new Intent(ShowActivity.this,MainActivity.class);
+                startActivity(intent1);
+                finish();
+            }
+        });
+    }
+}

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

@@ -5,7 +5,8 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
-    tools:context=".MainActivity">
+    tools:context=".MainActivity"
+    android:id="@+id/main">
 
     <LinearLayout
         android:layout_width="match_parent"

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

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context="showActivity"
+    android:id="@+id/second"
+    >
+
+    <com.google.android.material.appbar.AppBarLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:theme="@style/Theme.CityList.AppBarOverlay">
+
+        <androidx.appcompat.widget.Toolbar
+            android:id="@+id/toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="?attr/actionBarSize"
+            android:background="?attr/colorPrimary"
+            app:popupTheme="@style/Theme.CityList.PopupOverlay" />
+
+    </com.google.android.material.appbar.AppBarLayout>
+
+    <include layout="@layout/content_show" />
+
+    <com.google.android.material.floatingactionbutton.FloatingActionButton
+        android:id="@+id/fab"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="bottom|end"
+        android:layout_marginEnd="@dimen/fab_margin"
+        android:layout_marginBottom="16dp"
+        app:srcCompat="@android:drawable/ic_dialog_email" />
+
+</androidx.coordinatorlayout.widget.CoordinatorLayout>

app/src/main/res/layout/activity_show2.xml

@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ShowActivity"
+    android:id="@+id/second"
+    >
+
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="316dp"
+        android:text="TextView"
+        android:textSize="20sp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.519"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="80dp"
+        android:text="BACK"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.529"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/textView"
+        app:layout_constraintVertical_bias="0.023" />
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    app:layout_behavior="@string/appbar_scrolling_view_behavior">
+
+    <fragment
+        android:id="@+id/nav_host_fragment_content_show"
+        android:name="androidx.navigation.fragment.NavHostFragment"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        app:defaultNavHost="true"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:navGraph="@navigation/nav_graph" />
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".FirstFragment">
+
+    <TextView
+        android:id="@+id/textview_first"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/hello_first_fragment"
+        app:layout_constraintBottom_toTopOf="@id/button_first"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <Button
+        android:id="@+id/button_first"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/next"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/textview_first" />
+</androidx.constraintlayout.widget.ConstraintLayout>