FM: Set the frequency dialog box background color

Default color of text changed in the recent android version.
Set the background color as white so that test would be visible.

Change-Id: I08d8f5969b5e5fb121daf89a9652869c6f1308a0
CRs-fixed: 1056668

fmapp2/src/com/caf/hc_utils/FrequencyPicker.java

@@ -32,6 +32,7 @@ import android.widget.FrameLayout;
 import com.caf.fmradio.R;
 import android.widget.NumberPicker;
 import android.widget.NumberPicker.OnValueChangeListener;
+import android.graphics.Color;
 /**
  * A view for selecting the frequency
  *
@@ -85,6 +86,7 @@ public class FrequencyPicker extends FrameLayout {
         mMHzPicker = (NumberPicker) findViewById(R.id.mhz);
         if (mMHzPicker != null) {
            mMHzPicker.setOnLongPressUpdateInterval(100);
+           mMHzPicker.setBackgroundColor(Color.WHITE);
 
            mMHzPicker.setOnValueChangedListener(new OnValueChangeListener() {
               public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
@@ -100,6 +102,7 @@ public class FrequencyPicker extends FrameLayout {
         mKHzPicker = (NumberPicker) findViewById(R.id.khz);
         if (mKHzPicker != null) {
            mKHzPicker.setOnLongPressUpdateInterval(100);
+           mKHzPicker.setBackgroundColor(Color.WHITE);
            mKHzPicker.setOnValueChangedListener(new OnValueChangeListener() {
               public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
                   mKhz = newVal;