UIPickerView组件的默认宽度是多少? [英] What is the default width of a UIPickerView component?

问题描述

找出正确的答案应该很简单吗?它在Apple文档中的何处列出了各种UI组件的任何默认值?

Should be simple to find out right? Where in the Apple docs does it list any default values for various UI components?

我尝试调用协议的方法:

I've tried calling the protocol's method:

CGFloat width = [self pickerView:pickerView widthForComponent:0];

...但是没有运气.如何找出该默认值?

...but no luck. How do i find out this default value?

推荐答案

我以前没有尝试过，但是也许...

I haven't tried this before but maybe...

viewForRow:forComponent:

viewForRow:forComponent: http://developer.apple.com/iphone/library/documentation/uikit/reference/UIPickerView_Class/Reference/UIPickerView.html#//apple_ref/occ/instm/UIPickerView/viewForRow:forComponent:

然后从返回的UIView中获取宽度

then get the width from the UIView returned

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