fix grad filter brightness value stuck at -100

Change-Id: I8e0fa1e0b9537fc530fecb78aac019c220af7ae2
diff --git a/src/com/android/gallery3d/filtershow/editors/EditorGrad.java b/src/com/android/gallery3d/filtershow/editors/EditorGrad.java
index 4be435f..80c4303 100644
--- a/src/com/android/gallery3d/filtershow/editors/EditorGrad.java
+++ b/src/com/android/gallery3d/filtershow/editors/EditorGrad.java
@@ -191,13 +191,13 @@
         public ParamAdapter(int seekId, int textId, LinearLayout layout, int mode) {
             mSlider = (SeekBar) layout.findViewById(seekId);
             mTextView = (TextView) layout.findViewById(textId);
-            mSlider.setOnSeekBarChangeListener(this);
             mSlider.setMax(mMax - mMin);
             mMode = mode;
             FilterGradRepresentation rep = getGradRepresentation();
             if (rep != null){
                 updateValues(rep);
             }
+            mSlider.setOnSeekBarChangeListener(this);
         }
 
         public void updateValues(FilterGradRepresentation rep) {
@@ -428,5 +428,4 @@
     public void copyFrom(Parameter src) {
 
     }
-
 }
diff --git a/src/com/android/gallery3d/filtershow/filters/FilterGradRepresentation.java b/src/com/android/gallery3d/filtershow/filters/FilterGradRepresentation.java
index 354fa59..a3a7e95 100644
--- a/src/com/android/gallery3d/filtershow/filters/FilterGradRepresentation.java
+++ b/src/com/android/gallery3d/filtershow/filters/FilterGradRepresentation.java
@@ -114,7 +114,7 @@
         p.yPos1 = 100;
         p.xPos2 = -1;
         p.yPos2 = 100;
-        p.brightness = 40;
+        p.brightness = -50;
         p.contrast = 0;
         p.saturation = 0;
         mBands.add(0, p);