1 files changed, 6 insertions, 2 deletions
diff --git a/src/com/android/settings/notification/VolumeSeekBarPreference.java b/src/com/android/settings/notification/VolumeSeekBarPreference.java
index cb2fa90..49bd815 100644
--- a/src/com/android/settings/notification/VolumeSeekBarPreference.java
+++ b/src/com/android/settings/notification/VolumeSeekBarPreference.java
@@ -138,7 +138,9 @@ public class VolumeSeekBarPreference extends SeekBarPreference
         mVolumizer.start();
         mVolumizer.setSeekBar(mSeekBar);
         updateIconView();
-        mCallback.onStreamValueChanged(mStream, mSeekBar.getProgress());
+        if (mCallback != null) {
+            mCallback.onStreamValueChanged(mStream, mSeekBar.getProgress());
+        }
         updateSuppressionText();
         if (!isEnabled()) {
             mSeekBar.setEnabled(false);
@@ -150,7 +152,9 @@ public class VolumeSeekBarPreference extends SeekBarPreference
     @Override
     public void onProgressChanged(SeekBar seekBar, int progress, boolean fromTouch) {
         super.onProgressChanged(seekBar, progress, fromTouch);
-        mCallback.onStreamValueChanged(mStream, progress);
+        if (mCallback != null) {
+            mCallback.onStreamValueChanged(mStream, progress);
+        }
     }
 
     private void updateIconView() {