Notification sound field updates

- Show default and silent options
- Don't also update the default notification sound
- Display a better summary in case the sound isn't in media store

Change-Id: I42d537657a7bbddb8a1ce41fd03b8e5847899a82
Fixes: 36734113
Fixes: 36849670
Test: manual (silent sound, default sound, normal sound, private sound)

src/com/android/settings/notification/NotificationSoundPreference.java

@@ -0,0 +1,54 @@
+package com.android.settings.notification;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.media.Ringtone;
+import android.media.RingtoneManager;
+import android.net.Uri;
+import android.os.AsyncTask;
+import android.util.AttributeSet;
+
+import com.android.settings.R;
+import com.android.settings.RingtonePreference;
+
+public class NotificationSoundPreference extends RingtonePreference {
+    private Uri mRingtone;
+
+    public NotificationSoundPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    protected Uri onRestoreRingtone() {
+        return mRingtone;
+    }
+
+    public void setRingtone(Uri ringtone) {
+        mRingtone = ringtone;
+        updateRingtoneName(mRingtone);
+    }
+
+    private void updateRingtoneName(final Uri uri) {
+        AsyncTask ringtoneNameTask = new AsyncTask<Object, Void, CharSequence>() {
+            @Override
+            protected CharSequence doInBackground(Object... params) {
+                if (uri == null) {
+                    return getContext().getString(com.android.internal.R.string.ringtone_silent);
+                } else if (RingtoneManager.isDefault(uri)) {
+                    return getContext().getString(R.string.notification_sound_default);
+                } else if(ContentResolver.SCHEME_ANDROID_RESOURCE.equals(uri.getScheme())) {
+                    return getContext().getString(R.string.notification_unknown_sound_title);
+                } else {
+                    return Ringtone.getTitle(getContext(), uri, false /* followSettingsUri */,
+                            true /* allowRemote */);
+                }
+            }
+
+            @Override
+            protected void onPostExecute(CharSequence name) {
+                setSummary(name);
+            }
+        };
+        ringtoneNameTask.execute();
+    }
+}