平铺文理+拉伸按钮图片

 UIColor *circleColorPattern = [UIColor colorWithPatternImage:
                                   [UIImage imageNamed:@"node.png"]];
    [self.view setBackgroundColor:circleColorPattern];
    
    
    UIImage *buttonBackgroundImage = [[UIImage imageNamed:@"btnImage.jpg"]
                                      resizableImageWithCapInsets:UIEdgeInsetsMake(0,13,0,13)];
    [self.m_Btn setBackgroundImage:buttonBackgroundImage
                      forState:UIControlStateNormal];