UIButton上image和title的位置调整

UIButton上image和title的位置调整方法：

 //UIEdgeInsetsMake(top left bottom right)
 [button setImageEdgeInsets:UIEdgeInsetsMake(0.0, 100.0,0.0, 0.0)]; //将image的位置向右移动100个像素

 [button setTitleEdgeInsets:UIEdgeInsetsMake(0.0 , 100.0,0.0 , 0.0)]; ////将title的位置向右移动100个像素

//UIEdgeInsetsMake原型

UIKIT_STATIC_INLINE UIEdgeInsets UIEdgeInsetsMake(CGFloat top, CGFloat left, CGFloat bottom, CGFloat right) {
    UIEdgeInsets insets = {top, left, bottom, right};
    return insets;
}