Draws a button control in the specified state and bounds, with the specified image, and with an optional focus rectangle.

在指定边界内使用指定图像和一个可选焦点矩形绘制指定状态的按钮控制项。

youdao

Draws a button control in the specified state and bounds, with the specified text, and with an optional focus rectangle.

在指定边界内使用指定文本和一个可选焦点矩形绘制指定状态的按钮控制项。

youdao

Draws a button control in the specified state and bounds, with the specified text and text formatting, and with an optional focus rectangle.

在指定边界内使用指定文本、文本格式和一个可选焦点矩形绘制指定状态的按钮控制项。

youdao

Instead, they should use the view controller'sviewWillLayoutSubviews method and adjust the layout using the view's bounds rectangle.

ENGADGET: Apple seeds iOS 6 beta 4 to developers: here's the changelog