设置 TabBarItemt图片颜色

1 UIImage *discussSelectedImage = [UIImage imageNamed:@"discuss_selected"];
//设置图片不渲染
2     discussSelectedImage = [discussSelectedImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
3     discussController.tabBarItem =[[UITabBarItem alloc]initWithTitle:@"社区" image:[UIImage imageNamed:@"discuss_normal"] selectedImage:discussSelectedImage];
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原文地址：https://www.cnblogs.com/code-changeworld/p/4720953.html