Fix scanning settings link clickability in Talkback mode.

Bug: b/37431709
Test: make RunSettingsRoboTests
Change-Id: I0dc0a524a3c4abd1743748ebc8ebf20937018047

src/com/android/settings/wifi/LinkablePreference.java

@@ -21,6 +21,7 @@ import android.support.annotation.Nullable;
 import android.support.v7.preference.Preference;
 import android.support.v7.preference.PreferenceViewHolder;
 import android.text.Spannable;
+import android.text.method.LinkMovementMethod;
 import android.text.style.TextAppearanceSpan;
 import android.util.AttributeSet;
 import android.widget.TextView;
@@ -81,6 +82,7 @@ public class LinkablePreference extends Preference {
                     mContentTitle.length(),
                     Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
             textView.setText(boldSpan);
+            textView.setMovementMethod(new LinkMovementMethod());
         }
     }
 

tests/robotests/src/com/android/settings/wifi/LinkablePreferenceTest.java

@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2017 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.wifi;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.content.Context;
+import android.support.v7.preference.PreferenceViewHolder;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+
+import com.android.settings.LinkifyUtils;
+import com.android.settings.R;
+import com.android.settings.SettingsRobolectricTestRunner;
+import com.android.settings.TestConfig;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.annotation.Config;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class LinkablePreferenceTest {
+
+    private static final String TITLE = "Title";
+
+    private Context mContext = RuntimeEnvironment.application;
+
+    private LinkablePreference mPreference;
+    private PreferenceViewHolder mHolder;
+    private View mView;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+
+        mPreference = new LinkablePreference(mContext);
+        final CharSequence linkableDescription =
+                mContext.getResources().getText(R.string.wifi_scan_notify_text);
+        final LinkifyUtils.OnClickListener clickListener = () -> {/* Do nothing */ };
+        mPreference.setText(TITLE, linkableDescription, clickListener);
+
+        LayoutInflater inflater = LayoutInflater.from(mContext);
+        mView = inflater.inflate(
+                mPreference.getLayoutResource(), new LinearLayout(mContext), false);
+        mHolder = PreferenceViewHolder.createInstanceForTests(mView);
+
+        mPreference.onBindViewHolder(mHolder);
+    }
+
+    @Test
+    public void prefWithLinkShouldHaveAccessibilityMovementMethodSet() {
+        TextView textView = mView.findViewById(android.R.id.title);
+        assertThat(textView.getMovementMethod()).isNotNull();
+    }
+}