Fragment

app/build.gradle

@@ -33,11 +33,15 @@ android {
 
 dependencies {
 
-    implementation 'androidx.core:core-ktx:1.7.0'
     implementation 'androidx.appcompat:appcompat:1.5.1'
     implementation 'com.google.android.material:material:1.6.1'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.3'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+
+    implementation 'androidx.core:core-ktx:1.8.0'
+    implementation 'androidx.activity:activity-ktx:1.5.1'
+    implementation 'androidx.fragment:fragment-ktx:1.5.2'
+    implementation 'com.squareup.picasso:picasso:2.71828'
 }

app/src/main/AndroidManifest.xml

@@ -13,15 +13,32 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.Fragments"
         tools:targetApi="31">
+
         <activity
             android:name=".MainActivity"
             android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
-
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+
+        <activity
+            android:name=".MainActivity_A"
+            android:exported="true">
+            <meta-data
+                android:name="android.app.lib_name"
+                android:value="" />
+
+        </activity>
+
+        <activity
+            android:name=".MainActivity_B"
+            android:exported="true">
+            <meta-data
+                android:name="android.app.lib_name"
+                android:value="" />
+        </activity>
     </application>
 
 </manifest>

app/src/main/java/otus/gpb/homework/fragments/Fragment_A.kt

@@ -0,0 +1,50 @@
+package otus.gpb.homework.fragments
+
+import android.content.Context
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.Button
+import androidx.activity.OnBackPressedCallback
+import androidx.fragment.app.Fragment
+
+class Fragment_A : Fragment() {
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment__a, container, false)
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        view.findViewById<Button>(R.id.OpenFragment_AA).setOnClickListener{
+            val Fr_AA = Fragment_AA()
+            parentFragmentManager.beginTransaction()
+                .replace(R.id.FrameLayout_AA, Fr_AA, "Fr_AA")
+                .addToBackStack(null)
+                .commit()
+        }
+    }
+    override fun onAttach(context: Context) {
+        super.onAttach(context)
+        val callback: OnBackPressedCallback =
+            object : OnBackPressedCallback(true)
+            {
+                override fun handleOnBackPressed() {
+                    if(parentFragmentManager.fragments.count() > 1 )
+                        parentFragmentManager.popBackStack()
+                    else
+                        requireActivity().finish()
+                }
+            }
+        requireActivity().onBackPressedDispatcher.addCallback(
+            this,
+            callback
+        )
+    }
+
+}

app/src/main/java/otus/gpb/homework/fragments/Fragment_AA.kt

@@ -0,0 +1,32 @@
+package otus.gpb.homework.fragments
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.Button
+import androidx.fragment.app.Fragment
+
+class Fragment_AA : Fragment() {
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment__a_a, container, false)
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        this.view?.setBackgroundColor(ColorGenerator.generateColor())
+        view.findViewById<Button>(R.id.OpenFragment_AB).setOnClickListener{
+            val Fr_AB = Fragment_AB()
+            parentFragmentManager.
+            beginTransaction()
+                .replace(R.id.FrameLayout_AA, Fr_AB, "Fr_AB")
+                .addToBackStack(null)
+                .commit()
+        }
+    }
+}

app/src/main/java/otus/gpb/homework/fragments/Fragment_AB.kt

@@ -0,0 +1,23 @@
+package otus.gpb.homework.fragments
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+
+class Fragment_AB : Fragment() {
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        this.view?.setBackgroundColor(ColorGenerator.generateColor())
+    }
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment__a_b, container, false)
+    }
+
+}

app/src/main/java/otus/gpb/homework/fragments/Fragment_BA.kt

@@ -0,0 +1,41 @@
+package otus.gpb.homework.fragments
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.Button
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.setFragmentResultListener
+
+class Fragment_BA : Fragment() {
+
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment__b_a, container, false)
+    }
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        setFragmentResultListener("Color") { key, bundle ->
+            val color = bundle.getInt("COLOR")
+            this.view?.setBackgroundColor(color)
+        }
+        if (this.view?.findViewById<Button>(R.id.OpenFragment_BB) != null)
+        {
+            view.findViewById<Button>(R.id.OpenFragment_BB).setOnClickListener{
+                val Fr_BB = Fragment_BB()
+                parentFragmentManager.
+                beginTransaction()
+                    .replace(R.id.Fr_Port, Fr_BB, "Fr_BB")
+                    .addToBackStack(null)
+                    .commit()
+            }
+        }
+    }
+}
+

app/src/main/java/otus/gpb/homework/fragments/Fragment_BB.kt

@@ -0,0 +1,33 @@
+package otus.gpb.homework.fragments
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.Button
+import androidx.core.os.bundleOf
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.setFragmentResult
+
+class Fragment_BB : Fragment() {
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment__b_b, container, false)
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        view.findViewById<Button>(R.id.sendColor).setOnClickListener()
+        {
+            val color = ColorGenerator.generateColor()
+            val bundle = bundleOf(
+                "COLOR" to color
+            )
+            setFragmentResult("Color", bundle)
+        }
+    }
+}

app/src/main/java/otus/gpb/homework/fragments/MainActivity.kt

@@ -1,12 +1,23 @@
 package otus.gpb.homework.fragments
 
+import android.content.Intent
 import android.os.Bundle
+import android.widget.Button
 import androidx.appcompat.app.AppCompatActivity
 
 class MainActivity : AppCompatActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
+        findViewById<Button>(R.id.Open_Activity_A).setOnClickListener()
+        {
+            startActivity(Intent(this, MainActivity_A::class.java))
+        }
+
+        findViewById<Button>(R.id.Open_Activity_B).setOnClickListener()
+        {
+            startActivity(Intent(this, MainActivity_B::class.java))
+        }
     }
 }

app/src/main/java/otus/gpb/homework/fragments/MainActivity_A.kt

@@ -0,0 +1,23 @@
+package otus.gpb.homework.fragments
+
+import android.os.Bundle
+import android.widget.Button
+import androidx.appcompat.app.AppCompatActivity
+
+class MainActivity_A : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main_a)
+        findViewById<Button>(R.id.OpenFragment_A).setOnClickListener()
+        {
+            if(savedInstanceState == null)
+            {
+                val Fr_A = Fragment_A()
+                supportFragmentManager.beginTransaction()
+                    .replace(R.id.FrameLayout, Fr_A, "Fr_A")
+                    .addToBackStack(null)
+                    .commit()
+            }
+        }
+    }
+}

app/src/main/java/otus/gpb/homework/fragments/MainActivity_B.kt

@@ -0,0 +1,27 @@
+package otus.gpb.homework.fragments
+
+import android.os.Bundle
+import android.widget.FrameLayout
+import androidx.appcompat.app.AppCompatActivity
+
+class MainActivity_B : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main_b)
+        val Fr_BA = Fragment_BA()
+        if (findViewById<FrameLayout>(R.id.Fr_Port) != null)
+        {
+            supportFragmentManager.beginTransaction()
+                .replace(R.id.Fr_Port, Fr_BA, "Fr_BA")
+                .commit()
+        }
+        else
+        {
+            val Fr_BB = Fragment_BB()
+            supportFragmentManager.beginTransaction()
+                .replace(R.id.Fr_Fragment_BA, Fr_BA, "Fr_BA")
+                .replace(R.id.Fr_Fragment_BB, Fr_BB, "Fr_BB")
+                .commit()
+        }
+    }
+}

app/src/main/res/layout-land/activity_main_b.xml

@@ -0,0 +1,16 @@
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="horizontal">
+
+    <FrameLayout
+        android:id="@+id/Fr_Fragment_BA"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_weight="1"/>
+    <FrameLayout
+        android:id="@+id/Fr_Fragment_BB"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_weight="1"/>
+</LinearLayout>

app/src/main/res/layout-port/fragment__b_a.xml

@@ -0,0 +1,15 @@
+<?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"
+    tools:context=".Fragment_BA">
+
+    <!-- TODO: Update blank fragment layout -->
+
+    <Button
+        android:id="@+id/OpenFragment_BB"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Open Fragment BB" />
+</FrameLayout>

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

@@ -1,18 +1,20 @@
-<?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"
+<LinearLayout 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"
-    tools:context=".MainActivity">
+    android:orientation="vertical">
 
-    <TextView
+    <Button
+        android:id="@+id/Open_Activity_A"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="Hello World!"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        android:layout_gravity="center"
+        android:text="Open Activity A" />
 
-</androidx.constraintlayout.widget.ConstraintLayout>
+    <Button
+        android:id="@+id/Open_Activity_B"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:text="Open Activity B" />
+</LinearLayout>