UPDATE: Minor tweaks.

app/build.gradle

@@ -44,7 +44,6 @@ dependencies {
 
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
     implementation 'androidx.lifecycle:lifecycle-common-java8:2.0.0'
-    implementation 'androidx.lifecycle:lifecycle-extensions:2.0.0'
     implementation 'androidx.lifecycle:lifecycle-viewmodel:2.0.0'
     implementation 'androidx.appcompat:appcompat:1.0.2'
     implementation 'com.google.android.material:material:1.0.0'
@@ -56,5 +55,5 @@ dependencies {
     implementation(name: 'setup-wizard-lib-platform-release', ext: 'aar')
 
     androidTestImplementation 'org.mockito:mockito-android:2.8.9'
-    androidTestImplementation 'androidx.test:runner:1.1.1'
+    androidTestImplementation 'androidx.test:runner:1.2.0'
 }

app/src/main/java/com/oasisfeng/island/console/apps/AppListFragment.java

@@ -15,7 +15,7 @@
 import android.view.ViewGroup;
 import android.widget.SearchView;
 
-import com.oasisfeng.android.app.LifecycleFragment;
+import com.oasisfeng.android.app.LifecycleViewModelFragment;
 import com.oasisfeng.android.os.Loopers;
 import com.oasisfeng.androidx.lifecycle.ViewModelProviders;
 import com.oasisfeng.common.app.AppListProvider;
@@ -42,7 +42,7 @@
 
 /** The main UI - App list */
 @ParametersAreNonnullByDefault
-public class AppListFragment extends LifecycleFragment {
+public class AppListFragment extends LifecycleViewModelFragment {
 
 	@Override public void onCreate(final @Nullable Bundle savedInstanceState) {
 		super.onCreate(savedInstanceState);

assembly/proguard-rules.pro

@@ -24,29 +24,12 @@
 -dontwarn android.content.ContentResolver
 -dontwarn android.content.IContentProvider
 
-# For Google Error Prone (depended by Guava)
--dontwarn com.google.errorprone.annotations.*
-
-# For android-restrostream library
--dontwarn java9.util.stream.**
-
-# For Guava library
--dontwarn javax.annotation.**
--dontwarn sun.misc.Unsafe
--dontwarn com.google.common.**
-
 # Remove verbose and debug logging
 -assumenosideeffects class android.util.Log {
 	public static boolean isLoggable(java.lang.String, int);
 	public static int v(...);
 }
 
-# For @Keep to work
--keep @android.support.annotation.Keep class *
--keepclassmembers class * {
-    @android.support.annotation.Keep *;
-}
-
 # For generics reflection to work
 -keepattributes Signature
 -keepattributes *Annotation*

installer/src/main/AndroidManifest.xml

@@ -7,10 +7,9 @@
 
         <activity android:name=".AppInstallerActivity"
                   android:label="@string/app_installer_label"
-                  android:configChanges="orientation|screenSize|keyboard|keyboardHidden"
+                  android:configChanges="uiMode|orientation|screenSize|keyboard|keyboardHidden"
                   android:excludeFromRecents="true"
                   android:theme="@android:style/Theme.Translucent.NoTitleBar">
-
             <intent-filter> <!-- with MIME type -->
                 <action android:name="android.intent.action.VIEW" />
                 <action android:name="android.intent.action.INSTALL_PACKAGE" />
@@ -19,7 +18,6 @@
                 <data android:scheme="content" />
                 <data android:mimeType="application/vnd.android.package-archive" />
             </intent-filter>
-
             <intent-filter> <!-- without MIME type -->
                 <action android:name="android.intent.action.INSTALL_PACKAGE" />
                 <category android:name="android.intent.category.DEFAULT" />
@@ -28,7 +26,6 @@
                 <data android:scheme="package" />
                 <data android:scheme="content" />
             </intent-filter>
-
         </activity>
 
         <activity android:name=".AppInfoForwarderActivity"