No issue: Add OSS licenses link to About page

app/build.gradle

@@ -7,6 +7,7 @@ apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-android-extensions'
 apply from: "$project.rootDir/automation/gradle/versionCode.gradle"
 apply plugin: 'androidx.navigation.safeargs.kotlin'
+apply plugin: 'com.google.android.gms.oss-licenses-plugin'
 
 import com.android.build.gradle.internal.tasks.AppPreBuildTask
 import org.gradle.internal.logging.text.StyledTextOutput.Style
@@ -289,8 +290,8 @@ dependencies {
     implementation Deps.anko_constraintlayout
 
     implementation Deps.sentry
-
     implementation Deps.leanplum
+    implementation Deps.osslicenses_library
 
     implementation Deps.mozilla_concept_engine
     implementation Deps.mozilla_concept_push

app/src/main/AndroidManifest.xml

@@ -99,6 +99,12 @@
             android:enabled="${isRaptorEnabled}"
             android:exported="${isRaptorEnabled}" />
 
+        <activity android:name="com.google.android.gms.oss.licenses.OssLicensesMenuActivity"
+            android:theme="@style/Theme.AppCompat.DayNight.DarkActionBar"/>
+
+        <activity android:name="com.google.android.gms.oss.licenses.OssLicensesActivity"
+            android:theme="@style/Theme.AppCompat.DayNight.DarkActionBar"/>
+
         <service
             android:name=".customtabs.CustomTabsService"
             android:exported="true"

app/src/main/java/org/mozilla/fenix/settings/AboutFragment.kt

@@ -4,6 +4,7 @@
 
 package org.mozilla.fenix.settings
 
+import android.content.Intent
 import android.content.pm.PackageManager
 import android.os.Build
 import android.os.Build.VERSION.SDK_INT
@@ -14,6 +15,7 @@ import android.view.ViewGroup
 import androidx.annotation.RequiresApi
 import androidx.core.content.pm.PackageInfoCompat
 import androidx.fragment.app.Fragment
+import com.google.android.gms.oss.licenses.OssLicensesMenuActivity
 import kotlinx.android.synthetic.main.fragment_about.*
 import org.mozilla.fenix.BuildConfig
 import org.mozilla.fenix.R
@@ -57,6 +59,16 @@ class AboutFragment : Fragment() {
         about_text.text = aboutText
         about_content.text = content
         build_date.text = buildDate
+
+        view_licenses_button.setOnClickListener {
+            startActivity(Intent(context, OssLicensesMenuActivity::class.java))
+            OssLicensesMenuActivity.setActivityTitle(
+                getString(
+                    R.string.open_source_licenses_title,
+                    getString(R.string.app_name)
+                )
+            )
+        }
     }
 
     companion object {

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

@@ -67,6 +67,20 @@
                 tools:text="Monday 1/2 @ 5:00 PM"
                 android:textAlignment="center" />
 
+        <TextView
+                android:id="@+id/view_licenses_button"
+                android:layout_margin="16dp"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/about_open_source_licenses"
+                android:textSize="16sp"
+                android:textColor="?accent"
+                android:textStyle="bold"
+                android:textAllCaps="false"
+                app:layout_constraintTop_toBottomOf="@id/build_date"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintEnd_toEndOf="parent" />
+
     </androidx.constraintlayout.widget.ConstraintLayout>
 
 </ScrollView>

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

@@ -772,4 +772,11 @@
     <string name="etp_panel_off">Protections are OFF for this site</string>
     <!-- Header for exceptions list for which sites enhanced tracking protection is always off -->
     <string name="enhanced_tracking_protection_exceptions">Enhanced Tracking Protection is off for these websites</string>
+    <!-- About page Your rights link text -->
+    <string name="about_your_rights">Your rights</string>
+    <!-- About page link text to open open source licenses screen -->
+    <string name="about_open_source_licenses">Open source libraries we use</string>
+    <!-- Open source licenses page title
+    The first parameter is the app name -->
+    <string name="open_source_licenses_title">%s | OSS Libraries</string>
 </resources>

build.gradle

@@ -10,6 +10,7 @@ buildscript {
         classpath Deps.tools_kotlingradle
         classpath Deps.androidx_safeargs
         classpath Deps.allopen
+        classpath Deps.osslicenses_plugin
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files

buildSrc/src/main/java/Dependencies.kt

@@ -13,6 +13,8 @@ object Versions {
     const val sentry = "1.7.10"
     const val leakcanary = "1.6.3"
     const val leanplum = "5.2.3"
+    const val osslicenses_plugin = "0.9.5"
+    const val osslicenses_library = "17.0.0"
 
     const val androidx_appcompat = "1.1.0-rc01"
     const val androidx_coordinator_layout = "1.1.0-beta01"
@@ -74,6 +76,8 @@ object Deps {
     const val kotlin_coroutines_android = "org.jetbrains.kotlinx:kotlinx-coroutines-android:${Versions.coroutines}"
 
     const val allopen = "org.jetbrains.kotlin:kotlin-allopen:${Versions.kotlin}"
+    const val osslicenses_plugin = "com.google.android.gms:oss-licenses-plugin:${Versions.osslicenses_plugin}"
+    const val osslicenses_library = "com.google.android.gms:play-services-oss-licenses:${Versions.osslicenses_library}"
 
     const val rxKotlin = "io.reactivex.rxjava2:rxkotlin:${Versions.rxKotlin}"
     const val rxAndroid = "io.reactivex.rxjava2:rxandroid:${Versions.rxAndroid}"