话不多说，直接看示例代码
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```
// UIImageView *imageView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, kScreenW, tabBarHeight + 5)];
// [imageView setImage:[self createImageWithColor:[UIColor clearColor]]];
// [imageView setContentMode:UIViewContentModeScaleToFill];
// [self.tabBar insertSubview:imageView atIndex:0];
//覆盖原生Tabbar的上横线
// [[UITabBar appearance] setShadowImage:[self createImageWithColor:[UIColor clearColor]]];
//背景图片为透明色
// [[UITabBar appearance] setBackgroundImage:[self createImageWithColor:[UIColor clearColor]]];
self.tabBar.backgroundColor = [UIColor clearColor];
//设置为半透明
self.tabBarController.tabBar.translucent = YES;
```
```
-(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;
}
```
|
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