feat: 优化代码

app/src/main/java/io/legado/app/ui/widget/SearchView.kt

@@ -91,9 +91,8 @@ class SearchView : SearchView {
         super.setQueryHint(hint)
         updateQueryHint()
     }
-}
 
-internal class CenteredImageSpan(drawable: Drawable?) : ImageSpan(drawable!!) {
+    internal class CenteredImageSpan(drawable: Drawable?) : ImageSpan(drawable!!) {
         override fun draw(
             canvas: Canvas, text: CharSequence,
             start: Int, end: Int, x: Float,
@@ -110,4 +109,5 @@ internal class CenteredImageSpan(drawable: Drawable?) : ImageSpan(drawable!!) {
             b.draw(canvas)
             canvas.restore()
         }
+    }
 }

app/src/main/res/layout/view_search.xml

@@ -14,5 +14,4 @@
         app:queryBackground="@null"
         app:submitBackground="@null"
         app:searchHintIcon="@drawable/ic_search_hint"
-        app:goIcon="@drawable/ic_search"
         app:defaultQueryHint="搜索"/>