如何制作UIBarButtonItem NOT scaleToFit？

Question

我正在创建一个带有自定义图像的UIBarButtonItem：

UIButton *tempSpeedButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, buttonWidth, buttonHeight)];
        UIImage *speedImage = [[UIImage imageNamed:@"eye"] imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
        [tempSpeedButton setBackgroundImage:speedImage forState:UIControlStateNormal];
        [tempSpeedButton addTarget:self action:@selector(onSpeed) forControlEvents:UIControlEventTouchUpInside];
        tempSpeedButton.contentMode = UIViewContentModeScaleAspectFit;
        UIBarButtonItem* speedButton = [[UIBarButtonItem alloc] initWithCustomView:tempSpeedButton];

图像显得伸展开来。我怎样才能使它正常适合？

谢谢！

Answer 1

我所要做的只是添加：

[tempSpeedButton sizeToFit];