3 files changed, 134 insertions, 5 deletions

diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/compatibility/AppCompatPreferenceActivity.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/compatibility/AppCompatPreferenceActivity.java
new file mode 100644
index 000000000..5200b8ced
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/compatibility/AppCompatPreferenceActivity.java
@@ -0,0 +1,127 @@
+
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.sufficientlysecure.keychain.compatibility;
+
+import android.content.res.Configuration;
+import android.os.Bundle;
+import android.preference.PreferenceActivity;
+import android.support.annotation.LayoutRes;
+import android.support.annotation.Nullable;
+import android.support.v7.app.ActionBar;
+import android.support.v7.app.AppCompatDelegate;
+import android.support.v7.widget.Toolbar;
+import android.view.MenuInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+/**
+ * A {@link android.preference.PreferenceActivity} which implements and proxies the necessary calls
+ * to be used with AppCompat.
+ * <p/>
+ * This technique can be used with an {@link android.app.Activity} class, not just
+ * {@link android.preference.PreferenceActivity}.
+ */
+public abstract class AppCompatPreferenceActivity extends PreferenceActivity {
+    private AppCompatDelegate mDelegate;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        getDelegate().installViewFactory();
+        getDelegate().onCreate(savedInstanceState);
+        super.onCreate(savedInstanceState);
+    }
+
+    @Override
+    protected void onPostCreate(Bundle savedInstanceState) {
+        super.onPostCreate(savedInstanceState);
+        getDelegate().onPostCreate(savedInstanceState);
+    }
+
+    public ActionBar getSupportActionBar() {
+        return getDelegate().getSupportActionBar();
+    }
+
+    public void setSupportActionBar(@Nullable Toolbar toolbar) {
+        getDelegate().setSupportActionBar(toolbar);
+    }
+
+    @Override
+    public MenuInflater getMenuInflater() {
+        return getDelegate().getMenuInflater();
+    }
+
+    @Override
+    public void setContentView(@LayoutRes int layoutResID) {
+        getDelegate().setContentView(layoutResID);
+    }
+
+    @Override
+    public void setContentView(View view) {
+        getDelegate().setContentView(view);
+    }
+
+    @Override
+    public void setContentView(View view, ViewGroup.LayoutParams params) {
+        getDelegate().setContentView(view, params);
+    }
+
+    @Override
+    public void addContentView(View view, ViewGroup.LayoutParams params) {
+        getDelegate().addContentView(view, params);
+    }
+
+    @Override
+    protected void onPostResume() {
+        super.onPostResume();
+        getDelegate().onPostResume();
+    }
+
+    @Override
+    protected void onTitleChanged(CharSequence title, int color) {
+        super.onTitleChanged(title, color);
+        getDelegate().setTitle(title);
+    }
+
+    @Override
+    public void onConfigurationChanged(Configuration newConfig) {
+        super.onConfigurationChanged(newConfig);
+        getDelegate().onConfigurationChanged(newConfig);
+    }
+
+    @Override
+    protected void onStop() {
+        super.onStop();
+        getDelegate().onStop();
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        getDelegate().onDestroy();
+    }
+
+    public void invalidateOptionsMenu() {
+        getDelegate().invalidateOptionsMenu();
+    }
+
+    private AppCompatDelegate getDelegate() {
+        if (mDelegate == null) {
+            mDelegate = AppCompatDelegate.create(this, null);
+        }
+        return mDelegate;
+    }
+}
\ No newline at end of file
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/SettingsActivity.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/SettingsActivity.java
index 71f07d785..a552e1c55 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/SettingsActivity.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/SettingsActivity.java
@@ -23,7 +23,6 @@ import android.content.Intent;
 import android.os.Bundle;
 import android.preference.CheckBoxPreference;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.preference.PreferenceFragment;
 import android.preference.PreferenceScreen;
 import android.support.v7.widget.Toolbar;
@@ -33,12 +32,13 @@ import android.widget.LinearLayout;
 
 import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.compatibility.AppCompatPreferenceActivity;
 import org.sufficientlysecure.keychain.ui.widget.IntegerListPreference;
 import org.sufficientlysecure.keychain.util.Preferences;
 
 import java.util.List;
 
-public class SettingsActivity extends PreferenceActivity {
+public class SettingsActivity extends AppCompatPreferenceActivity {
 
     public static final String ACTION_PREFS_CLOUD = "org.sufficientlysecure.keychain.ui.PREFS_CLOUD";
     public static final String ACTION_PREFS_ADV = "org.sufficientlysecure.keychain.ui.PREFS_ADV";
@@ -104,13 +104,14 @@ public class SettingsActivity extends PreferenceActivity {
     private void setupToolbar() {
         ViewGroup root = (ViewGroup) findViewById(android.R.id.content);
         LinearLayout content = (LinearLayout) root.getChildAt(0);
-        LinearLayout toolbarContainer = (LinearLayout) View.inflate(this, R.layout.preference_toolbar_activity, null);
+        LinearLayout toolbarContainer = (LinearLayout) View.inflate(this, R.layout.preference_toolbar, null);
 
         root.removeAllViews();
         toolbarContainer.addView(content);
         root.addView(toolbarContainer);
 
         Toolbar toolbar = (Toolbar) toolbarContainer.findViewById(R.id.toolbar);
+
         toolbar.setTitle(R.string.title_preferences);
         toolbar.setNavigationIcon(getResources().getDrawable(R.drawable.ic_arrow_back_white_24dp));
         toolbar.setNavigationOnClickListener(new View.OnClickListener() {
diff --git a/OpenKeychain/src/main/res/layout/preference_toolbar_activity.xml b/OpenKeychain/src/main/res/layout/preference_toolbar.xml
index f17bc30bc..2f54b954e 100644
--- a/OpenKeychain/src/main/res/layout/preference_toolbar_activity.xml
+++ b/OpenKeychain/src/main/res/layout/preference_toolbar.xml
@@ -1,7 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:orientation="vertical"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    android:orientation="vertical">
 
     <include
         android:id="@+id/toolbar_include"