Fix middle-side radio selection

app/src/main/java/se/ajpanton/statusbartweak/shell/ui/LayoutFragment.java

@@ -17,6 +17,7 @@ import android.view.inputmethod.EditorInfo;
 import android.widget.CheckBox;
 import android.widget.EditText;
 import android.widget.LinearLayout;
+import android.widget.RadioButton;
 import android.widget.RadioGroup;
 import android.widget.TextView;
 
@@ -859,15 +860,30 @@ public final class LayoutFragment extends Fragment {
     }
 
     private int resolveLeftSideId(RadioGroup group) {
-        int id = group.getChildCount() > 0 ? group.getChildAt(0).getId() : View.NO_ID;
+        int id = sideButtonId(group, 0);
         return id != View.NO_ID ? id : 0;
     }
 
     private int resolveRightSideId(RadioGroup group) {
-        int id = group.getChildCount() > 1 ? group.getChildAt(1).getId() : View.NO_ID;
+        int id = sideButtonId(group, 1);
         return id != View.NO_ID ? id : resolveLeftSideId(group);
     }
 
+    private int sideButtonId(RadioGroup group, int radioIndex) {
+        int seen = 0;
+        for (int i = 0; i < group.getChildCount(); i++) {
+            View child = group.getChildAt(i);
+            if (!(child instanceof RadioButton)) {
+                continue;
+            }
+            if (seen == radioIndex) {
+                return child.getId();
+            }
+            seen++;
+        }
+        return View.NO_ID;
+    }
+
     private void setNumericText(EditText input, int value) {
         if (input == null) {
             return;

app/src/main/java/se/ajpanton/statusbartweak/shell/ui/LockedSceneLayoutFragment.java

@@ -10,6 +10,7 @@ import android.view.ViewGroup;
 import android.widget.CheckBox;
 import android.widget.EditText;
 import android.widget.LinearLayout;
+import android.widget.RadioButton;
 import android.widget.RadioGroup;
 import android.widget.ScrollView;
 import android.widget.TextView;
@@ -775,7 +776,7 @@ abstract class LockedSceneLayoutFragment extends Fragment {
     private int firstSideId(RadioGroup group, int rightId) {
         for (int i = 0; i < group.getChildCount(); i++) {
             View child = group.getChildAt(i);
-            if (child.getId() != rightId) {
+            if (child instanceof RadioButton && child.getId() != rightId) {
                 return child.getId();
             }
         }