HeaderView

app/src/main/AndroidManifest.xml

@@ -16,6 +16,7 @@
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:supportsRtl="true"
+        android:screenOrientation="landscape"
         android:theme="@style/Theme.SampleTv">
         <!--
         android:banner="@drawable/app_icon_your_company"
@@ -27,6 +28,7 @@
             android:exported="true"
             android:banner="@drawable/app_icon_your_company"
             android:label="@string/app_name"
+            android:theme="@style/Theme.AppCompat"
             android:screenOrientation="landscape">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

app/src/main/java/com/tech/sampletv/MainFragment.kt

@@ -2,24 +2,24 @@ package com.tech.sampletv
 
 import android.os.Build
 import android.os.Bundle
-import androidx.fragment.app.Fragment
-import android.view.LayoutInflater
 import android.view.View
-import android.view.ViewGroup
 import androidx.annotation.RequiresApi
+import androidx.core.content.ContextCompat
 import androidx.leanback.app.BrowseSupportFragment
+import androidx.leanback.widget.*
+import com.tech.sampletv.model.HeaderItemModel
+import com.tech.sampletv.prasenter.HeaderPresenter
+import com.tech.sampletv.utils.MyHeaderList
+import java.util.*
 
- /*BrowesSupportFragment is provided by leanback lib
- * BrowesSupportFragment containing HeadersFragment and RowsFragment
- *
- * */
 
-class MainFragment : BrowseSupportFragment() {
+/*BrowesSupportFragment is provided by leanback lib
+* BrowesSupportFragment containing HeadersFragment and RowsFragment
+*
+* */
 
+class MainFragment : BrowseSupportFragment() {
 
-    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
-        return inflater.inflate(R.layout.fragment_main, container, false)
-    }
 
     @RequiresApi(Build.VERSION_CODES.M)
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
@@ -32,14 +32,50 @@ class MainFragment : BrowseSupportFragment() {
         //badgeDrawable=resources.getDrawable(R.drawable.vedio_banner,null)
         // set Title
         title="This is my first TV App"
-        headersState=HEADERS_ENABLED
-        isHeadersTransitionOnBackEnabled=true
-
         //set fastLane (or headers) background color
         brandColor=resources.getColor(R.color.fastlane_background,null)
 
         // set search icon color
         searchAffordanceColor=resources.getColor(R.color.search_opaque,null)
 
+        setHeader()
+
+    }
+    private fun setHeader(){
+        headersState=HEADERS_ENABLED
+        isHeadersTransitionOnBackEnabled=true
+
+        // set fastLane (or headers) background color
+        brandColor = ContextCompat.getColor(requireContext(), R.color.fastlane_background)
+
+        // set search icon color
+        searchAffordanceColor = ContextCompat.getColor(requireContext(), R.color.search_opaque)
+
+        // Lines of code to be added
+        val sHeaderPresenter: PresenterSelector = ClassPresenterSelector()
+            .addClassPresenter(DividerRow::class.java, DividerPresenter())
+            .addClassPresenter(SectionRow::class.java, RowHeaderPresenter())
+            .addClassPresenter(Row::class.java, HeaderPresenter())
+
+        setHeaderPresenterSelector(sHeaderPresenter)
+
+        loadRows()
     }
+
+    private fun loadRows() {
+        //var i=0
+        var myHeader = MyHeaderList.headerList
+        val rowsAdapter = ArrayObjectAdapter(ListRowPresenter())
+        for (i in myHeader.indices) {
+            //add category with icon
+            val listRowAdapter = ArrayObjectAdapter(HeaderPresenter())
+            var header = HeaderItemModel(i, MyHeaderList.headerList[i], R.drawable.arrow)
+            rowsAdapter.add(ListRow(header, listRowAdapter))
+        }
+
+
+        setAdapter(rowsAdapter);
+
+    }
+
 }

app/src/main/java/com/tech/sampletv/model/HeaderItemModel.kt

@@ -0,0 +1,34 @@
+package com.tech.sampletv.model
+
+import androidx.leanback.widget.HeaderItem
+import com.tech.sampletv.model.HeaderItemModel
+
+/*
+  Copyright (C) SampleTv - All Rights Reserved Ⓒ
+  Unauthorized copying of this file, via any medium is strictly prohibited
+  Proprietary and confidential.
+  See the License for the specific language governing permissions and limitations under the License.
+
+  Created by Sanjay Singh on 25,April,2023 at 2:08 AM for SampleTv.
+  New Delhi,India
+ */
+class HeaderItemModel : HeaderItem {
+
+     // Hold an icon resource id
+    var iconResId = ICON_NONE
+
+    // Title + Icon
+    // No icon, label only
+    @JvmOverloads
+    constructor(id: Int, name: String, iconResId: Int = ICON_NONE) : super(id.toLong(), name) {
+        this.iconResId = iconResId
+    }
+
+    // Title label
+    constructor(name: String) : super(name) {}
+
+    companion object {
+        private val TAG = HeaderItemModel::class.java.simpleName
+        const val ICON_NONE = -1
+    }
+}

app/src/main/java/com/tech/sampletv/prasenter/HeaderPresenter.kt

@@ -0,0 +1,47 @@
+package com.tech.sampletv.prasenter
+
+import android.content.Context
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.appcompat.widget.AppCompatImageView
+import androidx.appcompat.widget.AppCompatTextView
+import androidx.leanback.widget.ListRow
+import androidx.leanback.widget.Presenter
+import androidx.leanback.widget.RowHeaderPresenter
+import com.tech.sampletv.R
+import com.tech.sampletv.model.HeaderItemModel
+
+/*
+  Copyright (C) SampleTv - All Rights Reserved Ⓒ
+  Unauthorized copying of this file, via any medium is strictly prohibited
+  Proprietary and confidential.
+  See the License for the specific language governing permissions and limitations under the License.
+
+  Created by Sanjay Singh on 25,April,2023 at 2:11 AM for SampleTv.
+  New Delhi,India
+ */
+class HeaderPresenter : RowHeaderPresenter() {
+    private var unSelecteditems = 0f
+
+    override fun onCreateViewHolder(viewGroup: ViewGroup): ViewHolder {
+        unSelecteditems = viewGroup.resources.getFraction(R.fraction.lb_browse_header_unselect_alpha, 1, 1)
+        val inflater = viewGroup.context.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
+        val view = inflater.inflate(R.layout.header_row, null)
+        return ViewHolder(view)
+    }
+
+    override fun onBindViewHolder(viewHolder: Presenter.ViewHolder, o: Any) {
+        val iconHeaderItem = (o as ListRow).headerItem as HeaderItemModel
+        val rootView = viewHolder.view
+        val iconView = rootView.findViewById<AppCompatImageView>(R.id.header_icon)
+        val label = rootView.findViewById<AppCompatTextView>(R.id.header_label)
+        label.text = iconHeaderItem.name
+        iconView.setImageResource(iconHeaderItem.iconResId)
+    }
+
+    override fun onUnbindViewHolder(holder: Presenter.ViewHolder) {}
+
+    companion object {
+        private val TAG = HeaderPresenter::class.java.simpleName
+    }
+}

app/src/main/java/com/tech/sampletv/utils/MyHeaderList.kt

@@ -0,0 +1,15 @@
+package com.tech.sampletv.utils
+
+/*
+  Copyright (C) SampleTv - All Rights Reserved Ⓒ
+  Unauthorized copying of this file, via any medium is strictly prohibited
+  Proprietary and confidential.
+  See the License for the specific language governing permissions and limitations under the License.
+
+  Created by Sanjay Singh on 25,April,2023 at 2:59 AM for SampleTv.
+  New Delhi,India
+ */
+
+object MyHeaderList {
+    var headerList = arrayOf("Home", "News", "Movie", "Series", "Others")
+}

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

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:focusable="true"
+    android:padding="10dp"
+    android:orientation="horizontal">
+
+    <androidx.appcompat.widget.AppCompatTextView
+        android:id="@+id/header_label"
+        android:layout_width="140dp"
+        android:text="Header"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="6dp"
+        android:textSize="18sp" />
+
+    <androidx.appcompat.widget.AppCompatImageView
+        android:id="@+id/header_icon"
+        android:layout_width="32dp"
+        android:layout_height="32dp"
+        android:layout_gravity="center"
+        android:visibility="visible" />
+
+</LinearLayout>

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

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <item name="fraction" type="fraction">5%</item>
+    <item name="parent_fraction" type="fraction">2%p</item>
+    <item name="lb_browse_header_unselect_alpha" type="fraction">50%</item>
+</resources>