ios 在代码中调整 UIBarButtonItem 的大小
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Resize UIBarButtonItem in code
提问by Hyman Humphries
How do I resize a UIBarButtonItem in the code?
如何在代码中调整 UIBarButtonItem 的大小？
回答by fsaint
You can't resize a UIBarButtonItem as you would a UIView. What you can do is change its widthproperty.
您不能像调整 UIView 那样调整 UIBarButtonItem 的大小。你可以做的是改变它的宽度属性。
UIBarButtonItem *b;
// Initialize and such ...
b.width = 150.0;
This should work for a Fixed Space Bar Button Item.
这应该适用于固定空格键按钮项目。
回答by Onur Var
If you want to use some custom image in UIBarButtonItem, you can use this code.
如果你想在 UIBarButtonItem 中使用一些自定义图像，你可以使用这个代码。
DoneButton = [[UIBarButtonItem alloc] initWithTitle:[Settings getConfigurableLabel:GENERAL_DONE] style:UIBarButtonItemStyleBordered target:self action:@selector(btnWorkOrderDoneClicked)];
UIButton *cameraButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 20.0f, 20.0f)];
UIImage *cameraImage = [UIImage imageNamed:@"cameraicon_white.png"];
[cameraButton setBackgroundImage:cameraImage forState:UIControlStateNormal];
[cameraButton addTarget:self action:@selector(openCamera) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem* cameraButtonItem = [[UIBarButtonItem alloc] initWithCustomView:cameraButton];
回答by Carl
Use the UIBarButtonItem's width property to resize the button to fit by setting it to 0.
使用 UIBarButtonItem 的 width 属性通过将其设置为 0 来调整按钮的大小以适应。
UIBarButtonItem* btn = // init
btn.width = .0f;
From Apple's docs: "If the value is 0.0 or negative, the item sets the width of the combined image and title to fit" https://developer.apple.com/library/ios/documentation/uikit/reference/UIBarButtonItem_Class/Reference/Reference.html#//apple_ref/occ/instp/UIBarButtonItem/width
来自 Apple 的文档：“如果值为 0.0 或负数，则该项目将组合图像和标题的宽度设置为适合” https://developer.apple.com/library/ios/documentation/uikit/reference/UIBarButtonItem_Class/Reference /Reference.html#//apple_ref/occ/instp/UIBarButtonItem/width
