增加Animated.View background，解决 ViewManager for tag xxx could not be found 问题

@@ -236,6 +236,7 @@ class SwipeRow extends React.PureComponent {
 				<Animated.View
 					{...this._panResponder.panHandlers}
 					style={{
+						backgroundColor: 'transparent',
 						transform: [
 							{translateX: this._translateX}
 						]
@@ -250,6 +251,7 @@ class SwipeRow extends React.PureComponent {
 					{...this._panResponder.panHandlers}
 					onLayout={ (e) => this.onContentLayout(e) }
 					style={{
+						backgroundColor: 'transparent',
 						transform: [
 							{translateX: this._translateX}
 						]