Fix bug of AppCompatSpinner

AppCompatSpinner jumps back during scrolling.
Just remove app:popupTheme in xml and set color in java code.
Refer to https://issuetracker.google.com/issues/37065626#comment15

mobile/src/main/java/cn/garymb/ygomobile/ui/cards/CardSearcher.java

@@ -359,7 +359,11 @@ public class CardSearcher implements View.OnClickListener {
     }
 
     protected <T extends View> T findViewById(int id) {
-        return (T) view.findViewById(id);
+        T v = view.findViewById(id);
+        if (v instanceof Spinner) {
+            ((Spinner) v).setPopupBackgroundResource(R.color.colorPrimary);
+        }
+        return v;
     }
 
     /*public void showDeckList() {

mobile/src/main/res/layout/nav_card_search.xml

@@ -101,8 +101,7 @@
                     android:id="@+id/sp_ot"
                     android:layout_width="0dp"
                     android:layout_height="@dimen/label_width_small"
-                    android:layout_weight="1"
-                    app:popupTheme="@style/AppTheme.PopupOverlay.Bule"/>
+                    android:layout_weight="1"/>
 
 
                 <android.support.v7.widget.AppCompatSpinner
@@ -110,8 +109,7 @@
                     android:layout_width="0dp"
                     android:layout_height="@dimen/label_width_small"
                     android:layout_weight="1"
-                    android:visibility="invisible"
-                    app:popupTheme="@style/AppTheme.PopupOverlay.Bule"/>
+                    android:visibility="invisible"/>
             </LinearLayout>
 
             <LinearLayout
@@ -123,16 +121,14 @@
                     android:id="@+id/sp_limit_list"
                     android:layout_width="0dp"
                     android:layout_height="match_parent"
-                    android:layout_weight="1"
-                    app:popupTheme="@style/AppTheme.PopupOverlay.Bule"/>
+                    android:layout_weight="1"/>
 
                 <android.support.v7.widget.AppCompatSpinner
                     android:id="@+id/sp_limit"
                     android:layout_width="0dp"
                     android:layout_height="match_parent"
                     android:layout_weight="1"
-                    android:visibility="invisible"
-                    app:popupTheme="@style/AppTheme.PopupOverlay.Bule"/>
+                    android:visibility="invisible"/>
             </LinearLayout>
 
             <LinearLayout
@@ -144,8 +140,7 @@
                     android:id="@+id/sp_category"
                     android:layout_width="0dp"
                     android:layout_height="match_parent"
-                    android:layout_weight="1"
-                    app:popupTheme="@style/AppTheme.PopupOverlay.Bule"/>
+                    android:layout_weight="1"/>
 
                 <Button
                     android:id="@+id/btn_linkmarker"
@@ -174,24 +169,21 @@
                     android:id="@+id/sp_type_card"
                     android:layout_width="0dp"
                     android:layout_height="@dimen/label_width_small"
-                    android:layout_weight="1"
-                    app:popupTheme="@style/AppTheme.PopupOverlay.Bule"/>
+                    android:layout_weight="1"/>
 
                 <android.support.v7.widget.AppCompatSpinner
                     android:id="@+id/sp_race"
                     android:layout_width="0dp"
                     android:layout_height="@dimen/label_width_small"
                     android:layout_weight="1"
-                    android:visibility="gone"
-                    app:popupTheme="@style/AppTheme.PopupOverlay.Bule"/>
+                    android:visibility="gone"/>
 
                 <android.support.v7.widget.AppCompatSpinner
                     android:id="@+id/sp_type_st"
                     android:layout_width="0dp"
                     android:layout_height="@dimen/label_width_small"
                     android:layout_weight="1"
-                    android:visibility="invisible"
-                    app:popupTheme="@style/AppTheme.PopupOverlay.Bule"/>
+                    android:visibility="invisible"/>
             </LinearLayout>
 
             <LinearLayout
@@ -209,15 +201,13 @@
                         android:id="@+id/sp_level"
                         android:layout_width="0dp"
                         android:layout_height="match_parent"
-                        android:layout_weight="1"
-                        app:popupTheme="@style/AppTheme.PopupOverlay.Bule"/>
+                        android:layout_weight="1"/>
 
                     <android.support.v7.widget.AppCompatSpinner
                         android:id="@+id/sp_attribute"
                         android:layout_width="0dp"
                         android:layout_height="match_parent"
-                        android:layout_weight="1"
-                        app:popupTheme="@style/AppTheme.PopupOverlay.Bule"/>
+                        android:layout_weight="1"/>
                 </LinearLayout>
 
                 <LinearLayout
@@ -229,15 +219,13 @@
                         android:id="@+id/sp_type_monster"
                         android:layout_width="0dp"
                         android:layout_height="match_parent"
-                        android:layout_weight="1"
-                        app:popupTheme="@style/AppTheme.PopupOverlay.Bule"/>
+                        android:layout_weight="1"/>
 
                     <android.support.v7.widget.AppCompatSpinner
                         android:id="@+id/sp_type_monster2"
                         android:layout_width="0dp"
                         android:layout_height="match_parent"
-                        android:layout_weight="1"
-                        app:popupTheme="@style/AppTheme.PopupOverlay.Bule"/>
+                        android:layout_weight="1"/>
                 </LinearLayout>