Review comments, fix build failure and targetActivity

app/src/main/AndroidManifest.xml

@@ -33,10 +33,14 @@
           We inherited this entry (${applicationId}.App) from Fennec. We need to keep this as our
           main launcher to avoid launcher icons on the home screen disappearing for all our users
           on a Fennec build.
+
+          !!HERE BE DRAGONS!!
+          We need the targetActivity to be IntentReceiverActivity so that we can check if we have
+          a migration in progress. If not, the HomeActivity is invoked.
         -->
         <activity-alias
             android:name="${applicationId}.App"
-            android:targetActivity=".HomeActivity">
+            android:targetActivity=".IntentReceiverActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
@@ -96,7 +100,7 @@
             android:taskAffinity=""
             android:windowSoftInputMode="adjustResize|stateAlwaysHidden" />
 
-        <activity android:name=".IntentReceiverActivity">
+        <activity android:name=".IntentReceiverActivity" android:theme="@style/Theme.Transparent">
             <intent-filter>
                 <action android:name="android.intent.action.VIEW" />
 
@@ -162,6 +166,12 @@
 
         </activity>
 
+        <activity
+                android:name=".migration.MigrationProgressActivity"
+                android:launchMode="singleInstance"
+                android:exported="false">
+        </activity>
+
         <activity android:name=".widget.VoiceSearchActivity" />
 
         <activity

app/src/main/java/org/mozilla/fenix/components/IntentProcessorType.kt

@@ -7,7 +7,7 @@ package org.mozilla.fenix.components
 import android.content.Intent
 import mozilla.components.feature.intent.processing.IntentProcessor
 import org.mozilla.fenix.HomeActivity
-import org.mozilla.fenix.MigrationProgressActivity
+import org.mozilla.fenix.migration.MigrationProgressActivity
 import org.mozilla.fenix.customtabs.ExternalAppBrowserActivity
 
 enum class IntentProcessorType {

app/src/main/java/org/mozilla/fenix/migration/MigrationProgressActivity.kt

@@ -2,7 +2,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-package org.mozilla.fenix
+package org.mozilla.fenix.migration
 
 import android.os.Bundle
 import android.view.LayoutInflater
@@ -24,6 +24,9 @@ import mozilla.components.support.migration.Migration.Settings
 import mozilla.components.support.migration.MigrationResults
 import mozilla.components.support.migration.state.MigrationProgress
 import mozilla.components.support.migration.state.MigrationStore
+import org.mozilla.fenix.HomeActivity
+import org.mozilla.fenix.IntentReceiverActivity
+import org.mozilla.fenix.R
 import org.mozilla.fenix.ext.components
 
 class MigrationProgressActivity : AbstractMigrationProgressActivity() {
@@ -31,9 +34,9 @@ class MigrationProgressActivity : AbstractMigrationProgressActivity() {
     override val store: MigrationStore by lazy { components.migrationStore }
 
     override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_migration)
         init()
-        super.onCreate(savedInstanceState)
     }
 
     fun init() {
@@ -60,16 +63,6 @@ class MigrationProgressActivity : AbstractMigrationProgressActivity() {
         }
     }
 
-    override fun onWindowFocusChanged(hasFocus: Boolean) {
-        super.onWindowFocusChanged(hasFocus)
-        if (hasFocus) {
-            // Enables sticky immersive mode.
-            window.decorView.systemUiVisibility = (View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
-                or View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
-                or View.SYSTEM_UI_FLAG_FULLSCREEN)
-        }
-    }
-
     override fun onMigrationCompleted() {
         // Enable clicking the finish button
         migration_button.apply {

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

@@ -379,4 +379,12 @@
         <item name="android:textSize">14sp</item>
     </style>
 
+    <style name="Theme.Transparent" parent="android:Theme">
+        <item name="android:windowIsTranslucent">true</item>
+        <item name="android:windowBackground">@android:color/transparent</item>
+        <item name="android:windowContentOverlay">@null</item>
+        <item name="android:windowNoTitle">true</item>
+        <item name="android:windowIsFloating">true</item>
+        <item name="android:backgroundDimEnabled">false</item>
+    </style>
 </resources>

app/src/migration/AndroidManifest.xml

@@ -13,11 +13,6 @@
         android:name="org.mozilla.fenix.MigratingFenixApplication"
         tools:replace="android:name">
         <service android:name="org.mozilla.fenix.MigrationService" />
-
-        <activity
-            android:name="org.mozilla.fenix.MigrationProgressActivity"
-            android:exported="false">
-        </activity>
     </application>
 </manifest>
 

app/src/migration/java/org/mozilla/fenix/MigratingFenixApplication.kt

@@ -5,10 +5,8 @@
 package org.mozilla.fenix
 
 import android.content.Context
-import android.content.Intent
 import kotlinx.coroutines.runBlocking
 import mozilla.components.support.migration.FennecMigrator
-import mozilla.components.support.migration.state.MigrationStore
 
 /**
  * An application class which knows how to migrate Fennec data.
@@ -28,13 +26,11 @@ class MigratingFenixApplication : FenixApplication() {
             .build()
     }
 
-    val migrationStore by lazy { MigrationStore() }
-
     val migrationPushSubscriber by lazy {
         MigrationPushSubscriber(
             this,
             components.backgroundServices.pushService,
-            migrationStore
+            components.migrationStore
         )
     }
 
@@ -47,11 +43,7 @@ class MigratingFenixApplication : FenixApplication() {
 
         // The rest of the migrations can happen now.
         migrationPushSubscriber.start()
-        migrator.startMigrationIfNeeded(migrationStore, MigrationService::class.java)
-
-        // Start migration UI
-        val intent = Intent(this, MigrationProgressActivity::class.java)
-        startActivity(intent)
+        migrator.startMigrationIfNeeded(components.migrationStore, MigrationService::class.java)
     }
 
     private fun migrateBlocking() {
@@ -71,7 +63,3 @@ class MigratingFenixApplication : FenixApplication() {
 fun Context.getMigratorFromApplication(): FennecMigrator {
     return (applicationContext as MigratingFenixApplication).migrator
 }
-
-fun Context.getMigrationStoreFromApplication(): MigrationStore {
-    return (applicationContext as MigratingFenixApplication).migrationStore
-}