From 6783a0d47036a9d6af7d455ef1cd100b231a790b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=A1=D1=8B=D1=87=D0=B5=D0=B2=20=D0=9C=D0=B8=D1=85=D0=B0?=
 =?UTF-8?q?=D0=B8=D0=BB=20=D0=92=D0=B0=D0=BB=D0=B5=D1=80=D1=8C=D0=B5=D0=B2?=
 =?UTF-8?q?=D0=B8=D1=87?= <msychev@mts.ru>
Date: Sat, 4 Nov 2023 16:41:48 +0300
Subject: [PATCH 1/2] [HOMEWORK_ACTIVITIES_1]

---
 app/build.gradle                              |  1 +
 app/src/main/AndroidManifest.xml              | 30 +++++++++++-
 .../java/homeworkActivities1/ActivityA.kt     | 27 ++++++++++
 .../java/homeworkActivities1/ActivityB.kt     | 25 ++++++++++
 .../java/homeworkActivities1/ActivityC.kt     | 49 +++++++++++++++++++
 .../java/homeworkActivities1/ActivityD.kt     | 11 +++++
 app/src/main/res/layout/activity_a.xml        | 17 +++++++
 app/src/main/res/layout/activity_b.xml        | 17 +++++++
 app/src/main/res/layout/activity_c.xml        | 44 +++++++++++++++++
 app/src/main/res/layout/activity_d.xml        | 10 ++++
 app/src/main/res/values/strings.xml           |  6 +++
 11 files changed, 236 insertions(+), 1 deletion(-)
 create mode 100644 app/src/main/java/homeworkActivities1/ActivityA.kt
 create mode 100644 app/src/main/java/homeworkActivities1/ActivityB.kt
 create mode 100644 app/src/main/java/homeworkActivities1/ActivityC.kt
 create mode 100644 app/src/main/java/homeworkActivities1/ActivityD.kt
 create mode 100644 app/src/main/res/layout/activity_a.xml
 create mode 100644 app/src/main/res/layout/activity_b.xml
 create mode 100644 app/src/main/res/layout/activity_c.xml
 create mode 100644 app/src/main/res/layout/activity_d.xml

diff --git a/app/build.gradle b/app/build.gradle
index 0579b10..b3859b9 100644
--- a/app/build.gradle
+++ b/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'
 }
\ No newline at end of file
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index f318e6c..bf15f2a 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/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>
\ No newline at end of file
diff --git a/app/src/main/java/homeworkActivities1/ActivityA.kt b/app/src/main/java/homeworkActivities1/ActivityA.kt
new file mode 100644
index 0000000..298ae68
--- /dev/null
+++ b/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)
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/homeworkActivities1/ActivityB.kt b/app/src/main/java/homeworkActivities1/ActivityB.kt
new file mode 100644
index 0000000..3a15de5
--- /dev/null
+++ b/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)
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/homeworkActivities1/ActivityC.kt b/app/src/main/java/homeworkActivities1/ActivityC.kt
new file mode 100644
index 0000000..b625e1c
--- /dev/null
+++ b/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)
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/homeworkActivities1/ActivityD.kt b/app/src/main/java/homeworkActivities1/ActivityD.kt
new file mode 100644
index 0000000..6d439b1
--- /dev/null
+++ b/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)
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_a.xml b/app/src/main/res/layout/activity_a.xml
new file mode 100644
index 0000000..82a667c
--- /dev/null
+++ b/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>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_b.xml b/app/src/main/res/layout/activity_b.xml
new file mode 100644
index 0000000..8b25926
--- /dev/null
+++ b/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>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_c.xml b/app/src/main/res/layout/activity_c.xml
new file mode 100644
index 0000000..dddf46f
--- /dev/null
+++ b/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>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_d.xml b/app/src/main/res/layout/activity_d.xml
new file mode 100644
index 0000000..ac55563
--- /dev/null
+++ b/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>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 08ea3c6..bbc18b3 100644
--- a/app/src/main/res/values/strings.xml
+++ b/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>
\ No newline at end of file

From 9c9d4544381c5fd36fdbed122c754264c0c3fd15 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=A1=D1=8B=D1=87=D0=B5=D0=B2=20=D0=9C=D0=B8=D1=85=D0=B0?=
 =?UTF-8?q?=D0=B8=D0=BB=20=D0=92=D0=B0=D0=BB=D0=B5=D1=80=D1=8C=D0=B5=D0=B2?=
 =?UTF-8?q?=D0=B8=D1=87?= <msychev@mts.ru>
Date: Sun, 5 Nov 2023 19:28:11 +0300
Subject: [PATCH 2/2] review fix

---
 app/src/main/java/homeworkActivities1/ActivityC.kt | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/homeworkActivities1/ActivityC.kt b/app/src/main/java/homeworkActivities1/ActivityC.kt
index b625e1c..c2a3d89 100644
--- a/app/src/main/java/homeworkActivities1/ActivityC.kt
+++ b/app/src/main/java/homeworkActivities1/ActivityC.kt
@@ -26,7 +26,7 @@ class ActivityC : AppCompatActivity(R.layout.activity_c) {
         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
+                flags = Intent.FLAG_ACTIVITY_CLEAR_TASK or Intent.FLAG_ACTIVITY_NEW_TASK
             }
             startActivity(intent)
         }
@@ -44,6 +44,7 @@ class ActivityC : AppCompatActivity(R.layout.activity_c) {
                 flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
             }
             startActivity(intent)
+            finishAffinity()
         }
     }
 }
\ No newline at end of file