灰色方形而不是在标签栏的图像。 我用故事板

Question

I uploaded a picture in the project, have it in the inspector, but only bar button draws a gray square. In other examples, nothing further is required. What to do?

Answer 1

UITabBarItems' image property automatically sets the render mode of images to template. If you want to use a full color image as a tabbar item image you should explicitly set the render mode of the image to UIImageRenderingModeAlwaysOriginal . You can set this in a .xcassets folder by selecting the image, opening the right pane, and setting render as "Original Image". Right now the tabbar is only looking at the alpha value of the image and tinting it gray. For more information you should look at the UIKit User Interface Catalog