在AppDelegate里面配置app的时候加上
if ([UINavigationBar instancesRespondToSelector:@selector(setShadowImage:)])
{
[[UINavigationBar appearance] setShadowImage:[self createImageWithColor:[UIColor clearColor]]];
}
//颜色转换图片
- (UIImage*) createImageWithColor: (UIColor*) color
{
CGRect rect=CGRectMake(0.0f, 0.0f, 1.0f, 1.0f);
UIGraphicsBeginImageContext(rect.size);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetFillColorWithColor(context, [color CGColor]);
CGContextFillRect(context, rect);
UIImage *theImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return theImage;
}
