Use a single layout for CreateShortcut activity.

The old layout is inherited from LauncherActivity, which uses a
inconsistent theme and UI between phone and tablet. It's more consistent
to just use a single layout that matches setting theme.

Fixes: 32220535
Test: runtest --path packages/apps/Settings/tests/app/src/com/android/settings/CreateShortcutTest.java
Change-Id: I769d1404c82c2057bf021e4cf557e7cf397d92a7

res/layout/activity_list.xml

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Copyright (C) 2016 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.
+  -->
+
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+             android:layout_width="match_parent"
+             android:layout_height="match_parent">
+
+    <ListView
+        android:id="@android:id/list"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"/>
+
+    <TextView
+        android:id="@android:id/empty"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:gravity="center"
+        android:text="@string/activity_list_empty"
+        android:visibility="gone"
+        android:textAppearance="?android:attr/textAppearanceMedium"/>
+
+</FrameLayout>

res/values/strings.xml

@@ -612,6 +612,8 @@
     <string name="settings_label_launcher">Settings</string>
     <!-- Label for option to select a settings panel as a shortcut -->
     <string name="settings_shortcut">Settings shortcut</string>
+    <!-- Shown in create shortcut activity when there is no shortcut that can be created. [CHAR_LIMIT=None] -->
+    <string name="activity_list_empty">No matching activities found.</string>
     <!-- Wireless controls settings screen, setting check box label -->
     <string name="airplane_mode">Airplane mode</string>
     <!-- Main Settings screen settings title for things like airplane mode, tethering, NFC, VPN.  This will take you to another screen with those settings.  [CHAR LIMIT=30] -->

src/com/android/settings/CreateShortcut.java

@@ -85,6 +85,11 @@ public class CreateShortcut extends LauncherActivity {
         return false;
     }
 
+    @Override
+    protected void onSetContentView() {
+        setContentView(R.layout.activity_list);
+    }
+
     /**
      * Perform query on package manager for list items.  The default
      * implementation queries for activities.

tests/app/src/com/android/settings/CreateShortcutTest.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2016 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 com.android.settings;
+
+import android.app.Instrumentation;
+import android.content.Intent;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static android.support.test.espresso.Espresso.onView;
+import static android.support.test.espresso.assertion.ViewAssertions.doesNotExist;
+import static android.support.test.espresso.matcher.ViewMatchers.withText;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class CreateShortcutTest {
+
+    @Test
+    public void test_layoutDoesNotHaveCancelButton() {
+        Instrumentation instrumentation = InstrumentationRegistry.getInstrumentation();
+        instrumentation.startActivitySync(new Intent(Intent.ACTION_CREATE_SHORTCUT)
+                .setClassName(instrumentation.getTargetContext(),
+                        CreateShortcut.class.getName()));
+        onView(withText(R.string.cancel)).check(doesNotExist());
+    }
+}