[HOMEWORK_ACTIVITIES_1]

app/build.gradle

@@ -35,4 +35,5 @@ dependencies {
     implementation 'androidx.core:core-ktx:1.8.0'
     implementation 'androidx.appcompat:appcompat:1.5.0'
     implementation 'com.google.android.material:material:1.6.1'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
 }

app/src/main/AndroidManifest.xml

@@ -12,6 +12,34 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.Activities"
-        tools:targetApi="31" />
+        tools:targetApi="31">
+
+        <activity
+            android:name="homeworkActivities1.ActivityD"
+            android:exported="false"
+            android:launchMode="singleTop"/>
+
+        <activity
+            android:name="homeworkActivities1.ActivityC"
+            android:exported="false" />
+
+        <activity
+            android:name="homeworkActivities1.ActivityB"
+            android:exported="false"
+            android:taskAffinity=".newTask" />
+
+        <activity
+            android:name="homeworkActivities1.ActivityA"
+            android:exported="true"
+            android:launchMode="singleTask">
+
+        <intent-filter>
+            <action android:name="android.intent.action.MAIN" />
+            <category android:name="android.intent.category.LAUNCHER" />
+        </intent-filter>
+
+        </activity>
+
+    </application>
 
 </manifest>

app/src/main/java/homeworkActivities1/ActivityA.kt

@@ -0,0 +1,27 @@
+package homeworkActivities1
+
+import android.content.Intent
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.widget.Button
+import otus.gpb.homework.activities.R
+class ActivityA : AppCompatActivity(R.layout.activity_a) {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+    }
+
+    override fun onStart() {
+        super.onStart()
+        println("Стек активити А равен $taskId")
+
+        val buttonOpenB = findViewById<Button>(R.id.buttonOpenBFromA)
+        buttonOpenB.setOnClickListener {
+            println("You clicked on button ${R.string.open_activity_b}")
+            val intent = Intent(this, ActivityB::class.java).apply {
+                flags = Intent.FLAG_ACTIVITY_NEW_TASK
+            }
+            startActivity(intent)
+        }
+    }
+}

app/src/main/java/homeworkActivities1/ActivityB.kt

@@ -0,0 +1,25 @@
+package homeworkActivities1
+
+import android.content.Intent
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.widget.Button
+import otus.gpb.homework.activities.R
+
+class ActivityB : AppCompatActivity(R.layout.activity_b) {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+    }
+
+    override fun onStart() {
+        super.onStart()
+        println("Стек активити В равен $taskId")
+
+        val buttonOpenC = findViewById<Button>(R.id.buttonOpenCFromB)
+        buttonOpenC.setOnClickListener {
+            println("You clicked on button ${R.string.open_activity_c}")
+            val intent = Intent(this, ActivityC::class.java)
+            startActivity(intent)
+        }
+    }
+}

app/src/main/java/homeworkActivities1/ActivityC.kt

@@ -0,0 +1,49 @@
+package homeworkActivities1
+
+import android.content.Intent
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.widget.Button
+import otus.gpb.homework.activities.R
+
+class ActivityC : AppCompatActivity(R.layout.activity_c) {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+    }
+
+    override fun onStart() {
+        super.onStart()
+        println("Стек активити C равен ${this.taskId}")
+
+        val buttonOpenA = findViewById<Button>(R.id.buttonOpenAFromC)
+        buttonOpenA.setOnClickListener {
+            println("You clicked on button ${R.string.open_activity_a}")
+            val intent = Intent(this, ActivityA::class.java)
+            startActivity(intent)
+        }
+
+        val buttonOpenD = findViewById<Button>(R.id.buttonOpenDFromC)
+        buttonOpenD.setOnClickListener {
+            println("You clicked on button ${R.string.open_activity_d}")
+            val intent = Intent(this, ActivityD::class.java).apply {
+                flags = Intent.FLAG_ACTIVITY_CLEAR_TASK
+            }
+            startActivity(intent)
+        }
+
+        val buttonCloseC = findViewById<Button>(R.id.buttonCloseCFromC)
+        buttonCloseC.setOnClickListener {
+            println("You clicked on button ${R.string.close_activity_c}")
+            finish()
+        }
+
+        val buttonCloseStack = findViewById<Button>(R.id.buttonCloseStackFromC)
+        buttonCloseStack.setOnClickListener {
+            println("You clicked on button ${R.string.close_stack}")
+            val intent = Intent(this, ActivityA::class.java).apply {
+                flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
+            }
+            startActivity(intent)
+        }
+    }
+}

app/src/main/java/homeworkActivities1/ActivityD.kt

@@ -0,0 +1,11 @@
+package homeworkActivities1
+
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import otus.gpb.homework.activities.R
+
+class ActivityD : AppCompatActivity(R.layout.activity_d) {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+    }
+}

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

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout 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"
+    android:gravity="center"
+    android:background="#f44336"
+    tools:context="homeworkActivities1.ActivityA">
+
+    <Button
+        android:id="@+id/buttonOpenBFromA"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/open_activity_b"/>
+
+</LinearLayout>

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

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout 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"
+    android:gravity="center"
+    android:background="#4caf50"
+    tools:context="homeworkActivities1.ActivityB">
+
+    <Button
+        android:id="@+id/buttonOpenCFromB"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/open_activity_c"/>
+
+</LinearLayout>

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

@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout 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"
+    android:gravity="center"
+    android:orientation="vertical"
+    android:background="#2196f3"
+    tools:context="homeworkActivities1.ActivityC">
+
+    <Button
+        android:id="@+id/buttonOpenAFromC"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="40dp"
+        android:layout_marginTop="40dp"
+        android:text="@string/open_activity_a"/>
+
+    <Button
+        android:id="@+id/buttonOpenDFromC"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="40dp"
+        android:layout_marginTop="40dp"
+        android:text="@string/open_activity_d"/>
+
+    <Button
+        android:id="@+id/buttonCloseCFromC"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="40dp"
+        android:layout_marginTop="40dp"
+        android:text="@string/close_activity_c"/>
+
+    <Button
+        android:id="@+id/buttonCloseStackFromC"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="40dp"
+        android:layout_marginTop="40dp"
+        android:text="@string/close_stack"/>
+
+</LinearLayout>

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

@@ -0,0 +1,10 @@
+<?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"
+    android:background="#ffeb3b"
+    tools:context="homeworkActivities1.ActivityD">
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/values/strings.xml

@@ -1,3 +1,9 @@
 <resources>
     <string name="app_name">Activities</string>
+    <string name="open_activity_b">Open Activity B</string>
+    <string name="open_activity_c">Open Activity C</string>
+    <string name="open_activity_a">Open Activity A</string>
+    <string name="open_activity_d">Open Activity D</string>
+    <string name="close_activity_c">Close Activity C</string>
+    <string name="close_stack">Close Stack</string>
 </resources>