Update Accessbility vibration settings.

- Get notification vibration and haptic feedback intensity repectively.
- Use xliffs to compose these strings.
- Use the version that passed in Vibrator.class to get Vibrator
  instance.
- Refactor switch/case part in getSummary() of
  VibrationIntensityPreferenceController.
  Let AccessibilitySettings and VibrationIntensityPreferenceController
  both call it.
- Add robolectric test for method: updateVibrationSummary().
- Refine test method, use real preference and test summary value.
- Remove redundancy.

Bug: 75322064
Test: make ROBOTEST_FILTER=AccessibilitySettingsTest RunSettingsRoboTests
Change-Id: Ia3c7447b1ab1e336b36ad439800b673821417e48
Merged-In: Ia3c7447b1ab1e336b36ad439800b673821417e48

src/com/android/settings/accessibility/AccessibilitySettings.java

@@ -33,6 +33,7 @@ import android.os.UserHandle;
 import android.os.Vibrator;
 import android.provider.SearchIndexableResource;
 import android.provider.Settings;
+import android.support.annotation.VisibleForTesting;
 import android.support.v14.preference.SwitchPreference;
 import android.support.v4.content.ContextCompat;
 import android.support.v7.preference.ListPreference;
@@ -747,12 +748,34 @@ public class AccessibilitySettings extends SettingsPreferenceFragment implements
         pref.setSummary(entries[index]);
     }
 
-    private void updateVibrationSummary(Preference pref) {
-        Vibrator vibrator = getContext().getSystemService(Vibrator.class);
-        final int intensity = Settings.System.getInt(getContext().getContentResolver(),
+    @VisibleForTesting(otherwise = VisibleForTesting.PRIVATE)
+    void updateVibrationSummary(Preference pref) {
+        final Context context = getContext();
+        final Vibrator vibrator = context.getSystemService(Vibrator.class);
+
+        final int ringIntensity = Settings.System.getInt(context.getContentResolver(),
                 Settings.System.NOTIFICATION_VIBRATION_INTENSITY,
                 vibrator.getDefaultNotificationVibrationIntensity());
-        mVibrationPreferenceScreen.setSummary(getVibrationSummary(getContext(), intensity));
+        CharSequence ringIntensityString =
+                VibrationIntensityPreferenceController.getIntensityString(context, ringIntensity);
+
+        final int touchIntensity = Settings.System.getInt(context.getContentResolver(),
+                Settings.System.HAPTIC_FEEDBACK_INTENSITY,
+                vibrator.getDefaultHapticFeedbackIntensity());
+        CharSequence touchIntensityString =
+                VibrationIntensityPreferenceController.getIntensityString(context, touchIntensity);
+
+        if (mVibrationPreferenceScreen == null) {
+            mVibrationPreferenceScreen = findPreference(VIBRATION_PREFERENCE_SCREEN);
+        }
+
+        if (ringIntensity == touchIntensity) {
+            mVibrationPreferenceScreen.setSummary(ringIntensityString);
+        } else {
+            mVibrationPreferenceScreen.setSummary(
+                    getString(R.string.accessibility_vibration_summary,
+                            ringIntensityString, touchIntensityString));
+        }
     }
 
     private String getVibrationSummary(Context context, @VibrationIntensity int intensity) {

src/com/android/settings/accessibility/VibrationIntensityPreferenceController.java

@@ -77,16 +77,19 @@ public abstract class VibrationIntensityPreferenceController extends BasePrefere
     public CharSequence getSummary() {
         final int intensity = Settings.System.getInt(mContext.getContentResolver(),
                 mSettingKey, getDefaultIntensity());
+        return getIntensityString(mContext, intensity);
+   }
 
+    public static CharSequence getIntensityString(Context context, int intensity) {
         switch (intensity) {
             case Vibrator.VIBRATION_INTENSITY_OFF:
-                return mContext.getText(R.string.accessibility_vibration_intensity_off);
+                return context.getText(R.string.accessibility_vibration_intensity_off);
             case Vibrator.VIBRATION_INTENSITY_LOW:
-                return mContext.getText(R.string.accessibility_vibration_intensity_low);
+                return context.getText(R.string.accessibility_vibration_intensity_low);
             case Vibrator.VIBRATION_INTENSITY_MEDIUM:
-                return mContext.getText(R.string.accessibility_vibration_intensity_medium);
+                return context.getText(R.string.accessibility_vibration_intensity_medium);
             case Vibrator.VIBRATION_INTENSITY_HIGH:
-                return mContext.getText(R.string.accessibility_vibration_intensity_high);
+                return context.getText(R.string.accessibility_vibration_intensity_high);
             default:
                 return "";
         }