Basic-Activities 1

app/src/main/AndroidManifest.xml

@@ -12,6 +12,30 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.Activities"
-        tools:targetApi="31" />
+        tools:targetApi="31">
+        <activity
+            android:name=".ActivityD"
+            android:taskAffinity="aaa.aaa"
+            android:exported="false" />
+        <activity
+            android:name=".ActivityC"
+            android:taskAffinity="aaa.aaa"
+            android:exported="false" />
+        <activity
+            android:name=".ActivityB"
+            android:taskAffinity="aaa.aaa"
+            android:exported="false" />
+        <activity
+            android:launchMode="singleTask"
+
+            android:name=".ActivityA"
+            android:exported="true">
+            <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/otus/gpb/homework/activities/ActivityA.kt

@@ -0,0 +1,25 @@
+package otus.gpb.homework.activities
+
+import android.content.Intent
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.widget.Button
+import android.widget.Toast
+
+class ActivityA : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_a)
+
+        findViewById<Button>(R.id.buttonActivityAOpenB).setOnClickListener {
+            val intent = Intent(this, ActivityB::class.java)
+            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_MULTIPLE_TASK)
+            startActivity(intent)
+        }
+    }
+
+    override fun onNewIntent(intent: Intent?) {
+        super.onNewIntent(intent)
+        Toast.makeText(this, "ActivityA onNewIntent", Toast.LENGTH_SHORT).show()
+    }
+}

app/src/main/java/otus/gpb/homework/activities/ActivityB.kt

@@ -0,0 +1,24 @@
+package otus.gpb.homework.activities
+
+import android.content.Intent
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.widget.Button
+import android.widget.Toast
+
+class ActivityB : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_b)
+
+        findViewById<Button>(R.id.buttonActivityBOpenC).setOnClickListener {
+            val intent = Intent(this, ActivityC::class.java)
+            startActivity(intent)
+        }
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        Toast.makeText(this, "ActivityB onDestroy", Toast.LENGTH_SHORT).show()
+    }
+}

app/src/main/java/otus/gpb/homework/activities/ActivityC.kt

@@ -0,0 +1,35 @@
+package otus.gpb.homework.activities
+
+import android.content.Intent
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.widget.Button
+import android.widget.Toast
+
+class ActivityC : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_c)
+
+        findViewById<Button>(R.id.buttonActivityCOpenA).setOnClickListener {
+            val intent = Intent(this, ActivityA::class.java)
+            startActivity(intent)
+        }
+        findViewById<Button>(R.id.buttonActivityCOpenD).setOnClickListener {
+            val intent = Intent(this, ActivityD::class.java)
+            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK and Intent.FLAG_ACTIVITY_NEW_TASK)
+            startActivity(intent)
+        }
+        findViewById<Button>(R.id.buttonActivityCClose).setOnClickListener {
+            finish()
+        }
+        findViewById<Button>(R.id.buttonActivityCCloseStack).setOnClickListener {
+            finishAffinity()
+        }
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        Toast.makeText(this, "ActivityC onDestroy", Toast.LENGTH_SHORT).show()
+    }
+}

app/src/main/java/otus/gpb/homework/activities/ActivityD.kt

@@ -0,0 +1,17 @@
+package otus.gpb.homework.activities
+
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.widget.Toast
+
+class ActivityD : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_d)
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        Toast.makeText(this, "ActivityD onDestroy", Toast.LENGTH_SHORT).show()
+    }
+}

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

@@ -0,0 +1,17 @@
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingLeft="16dp"
+    android:paddingRight="16dp"
+    android:orientation="vertical"
+    android:gravity="center"
+    android:background="#f44336">
+
+    <Button
+        android:id="@+id/buttonActivityAOpenB"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="50dp"
+        android:text="Open ActivityB"/>
+
+</LinearLayout>

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

@@ -0,0 +1,17 @@
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingLeft="16dp"
+    android:paddingRight="16dp"
+    android:orientation="vertical"
+    android:gravity="center"
+    android:background="#4caf50">
+
+    <Button
+        android:id="@+id/buttonActivityBOpenC"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="50dp"
+        android:text="Open ActivityC"/>
+
+</LinearLayout>

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

@@ -0,0 +1,35 @@
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingLeft="16dp"
+    android:paddingRight="16dp"
+    android:orientation="vertical"
+    android:gravity="center"
+    android:background="#2196f3">
+
+    <Button
+        android:id="@+id/buttonActivityCOpenA"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="50dp"
+        android:text="Open ActivityA"/>
+    <Button
+        android:id="@+id/buttonActivityCOpenD"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="50dp"
+        android:text="Open ActivityD"/>
+    <Button
+        android:id="@+id/buttonActivityCClose"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="50dp"
+        android:text="Close ActivityC"/>
+    <Button
+        android:id="@+id/buttonActivityCCloseStack"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="50dp"
+        android:text="Close Stack"/>
+
+</LinearLayout>

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

@@ -0,0 +1,10 @@
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingLeft="16dp"
+    android:paddingRight="16dp"
+    android:orientation="vertical"
+    android:gravity="center"
+    android:background="#ffeb3b">
+
+</LinearLayout>