CustomSeekBarPreference: migrate to androidx

Change-Id: Icaed06f1a4e52f21d81c2bd27a5f1ff9acbf0226
diff --git a/src/com/bliss/support/preferences/CustomSeekBarPreference.java b/src/com/bliss/support/preferences/CustomSeekBarPreference.java
index a2af6ef..f8de8ea 100644
--- a/src/com/bliss/support/preferences/CustomSeekBarPreference.java
+++ b/src/com/bliss/support/preferences/CustomSeekBarPreference.java
@@ -19,8 +19,8 @@
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.PorterDuff;
-import android.support.v4.content.res.TypedArrayUtils;
-import android.support.v7.preference.*;
+import androidx.core.content.res.TypedArrayUtils;
+import androidx.preference.*;
 import android.util.AttributeSet;
 import android.util.Log;
 import android.view.View;
@@ -102,7 +102,7 @@
 
     public CustomSeekBarPreference(Context context, AttributeSet attrs) {
         this(context, attrs, TypedArrayUtils.getAttr(context,
-                android.support.v7.preference.R.attr.preferenceStyle,
+                androidx.preference.R.attr.preferenceStyle,
                 android.R.attr.preferenceStyle));
     }