iOS UIButton 设置图片不变型 setImage:

标签：ios uibutton 设置图片不变

[btn.imageView setContentMode:UIViewContentModeScaleAspectFill]; 

下面方法自己可以试下, 你就知效果了...

typedef NS_ENUM(NSInteger, UIViewContentMode) {

    UIViewContentModeScaleToFill,

    UIViewContentModeScaleAspectFit,      // contents scaled to fit with fixed aspect. remainder is transparent

    UIViewContentModeScaleAspectFill,     // contents scaled to fill with fixed aspect. some portion of content may be clipped.

    UIViewContentModeRedraw,              // redraw on bounds change (calls -setNeedsDisplay)

    UIViewContentModeCenter,              // contents remain same size. positioned adjusted.

    UIViewContentModeTop,

    UIViewContentModeBottom,

    UIViewContentModeLeft,

    UIViewContentModeRight,

    UIViewContentModeTopLeft,

    UIViewContentModeTopRight,

    UIViewContentModeBottomLeft,

    UIViewContentModeBottomRight,

};

iOS UIButton 设置图片不变型 setImage:

标签：ios uibutton 设置图片不变

原文地址：http://blog.csdn.net/alincexiaohao/article/details/39613617