Added codes for dynamic fragment

Author: deveshp007

Images/S40.png

@@ -0,0 +1,25 @@
+package com.example.four
+
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import androidx.fragment.app.FragmentManager
+import androidx.fragment.app.FragmentTransaction
+
+class MainActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+
+        val fm: FragmentManager = supportFragmentManager
+        val fragmentTransaction: FragmentTransaction = fm.beginTransaction()
+        val displaymode = resources.configuration.orientation
+        if (displaymode == 1) {
+            val f1 = FragmentOne()
+            fragmentTransaction.replace(android.R.id.content, f1)
+        } else {
+            val f2 = FragmentTwo()
+            fragmentTransaction.replace(android.R.id.content, f2)
+        }
+        fragmentTransaction.commit()
+    }
+}

Kotlin/P40.kt

@@ -0,0 +1,22 @@
+package com.example.four
+
+import android.os.Bundle
+import androidx.fragment.app.Fragment
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+
+
+class FragmentOne : Fragment() {
+
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment_one, container, false)
+    }
+
+
+}

Kotlin/P40_a.kt

@@ -0,0 +1,20 @@
+package com.example.four
+
+import android.os.Bundle
+import androidx.fragment.app.Fragment
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+
+class FragmentTwo : Fragment() {
+
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment_two, container, false)
+    }
+
+}

Kotlin/P40_b.kt

@@ -0,0 +1,12 @@
+<?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:orientation="horizontal"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+
+
+
+</androidx.constraintlayout.widget.ConstraintLayout>

Xml/P40.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/white"
+    tools:context=".FragmentOne">
+
+    <TextView
+        android:id="@+id/textView2"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:gravity="center"
+        android:textSize="30sp"
+        android:textColor="@color/black"
+        android:text="I'M FRAGMENT ONE" />
+
+</FrameLayout>

Xml/P40_a.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#909090"
+    tools:context=".FragmentTwo">
+
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:gravity="center"
+        android:textColor="@color/black"
+        android:text="I'M FRAGMENT TWO"
+        android:textSize="30sp" />
+</FrameLayout>

Xml/P40_b.xml

@@ -243,7 +243,7 @@ Add a service with the name same as class name of the JobService in the manifest
 
 ### <u>12. Fragment with ListView:</u>
 
-> App with two fragments in a single activity. The first fragment is having a list of items. When we click on any item, the second fragment is displayed with the name of the item.
+> App with two fragments in a single activity. The first fragment is having a list of items. When we click on any item, the second fragment is displayed with the name of the item. It also shows how to pass data from one fragment to another fragment.
 - Fragment
 - FragmentManager
 - ListView
@@ -258,4 +258,23 @@ Add a service with the name same as class name of the JobService in the manifest
 | [2'nd fragment](Xml/P39_b.xml) | [2'nd fragment](Kotlin/P39_b.kt) | |
 
 
+---
+
+### <u>13. Dynamic Fragment Example App:</u>
+
+> App with two fragments. The fragments are displayed depending on the orientation of the device. When the device is in portrait mode, the first fragment is displayed. When the device is in landscape mode, the second fragment is displayed.
+- Fragment
+- FragmentManager
+- FragmentTransaction
+- Orientation
+- Button
+- TextView
+
+| XML Codes | Kotlin Codes|  Output |
+|-----------|:-----------:| :-----------:|
+| [Main activity](Xml/P40.xml) | [Main activity](Kotlin/P40.kt) |  | 
+| [1'st fragment](Xml/P40_a.xml) | [1'st fragment](Kotlin/P40_a.kt) | [Output Screenshot](Images/S40.png) |
+| [2'nd fragment](Xml/P40_b.xml) | [2'nd fragment](Kotlin/P40_b.kt) | |
+
+
 ---