如何解决BottomNavigationBar无法应用背景图像-Flutter
当 BottomNavigationBarItem 多于3个时，BottomNavigationBar 不应用背景图像。它显示白色背景而不是应用的图像。请查看代码，让我知道代码中是否缺少某些内容。
bottomNavigationBar: Container(
decoration: Boxdecoration(
image: decorationImage(image: Assetimage('assets/images/tabbar_background.png'),fit: BoxFit.fill),),child: BottomNavigationBar(
backgroundColor: Colors.transparent,elevation: 0,items: [
BottomNavigationBarItem(icon: Image.asset("assets/images/eplay.png"),title: Text('title')),BottomNavigationBarItem(icon: Image.asset("assets/images/games.png"),BottomNavigationBarItem(icon: Image.asset("assets/images/retail-location.png"),BottomNavigationBarItem(icon: Image.asset("assets/images/scan.png"),/* BottomNavigationBarItem(icon: Image.asset("assets/images/scan.png"),*/
],解决方法
将type: BottomNavigationBarType.fixed添加为BottomNavigationBar的属性。
我以您的代码为例添加了一个演示：
bottomNavigationBar: Container(
decoration: BoxDecoration(
image: DecorationImage(image: AssetImage('assets/images/tabbar_background.png'),fit: BoxFit.fill),),child: BottomNavigationBar(
backgroundColor: Colors.transparent,type: BottomNavigationBarType.fixed,// new line
elevation: 0,items: [
BottomNavigationBarItem(icon: Image.asset("assets/images/eplay.png"),title: Text('title')),BottomNavigationBarItem(icon: Image.asset("assets/images/games.png"),BottomNavigationBarItem(icon: Image.asset("assets/images/retail-location.png"),BottomNavigationBarItem(icon: Image.asset("assets/images/scan.png"),/* BottomNavigationBarItem(icon: Image.asset("assets/images/scan.png"),*/
],版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 dio@foxmail.com 举报，一经查实，本站将立刻删除。