修复很简单: 在自己定义的item前边加一个FixedSpace的BarButton.
UIBarButtonItem *negativeSpacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem: UIBarButtonSystemItemFixedSpace target:nil action:nil]; negativeSpacer.width = -15; self.navigationItem.leftBarButtonItems = @[negativeSpacer, [[UIBarButtonItem alloc] initWithCustomView:button]];
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