話不多說，直接看示例代碼

```
//  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];

  //籠罩原生Tabbar的上橫線
//  [[UITabBar appearance] setShadowImage:[self createImageWithColor:[UIColor clearColor]]];
//配景圖片為通明色
//  [[UITabBar appearance] setBackgroundImage:[self createImageWithColor:[UIColor clearColor]]];
  self.tabBar.backgroundColor = [UIColor clearColor];
//設置為半通明
  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;
}


```

以上就是在IOS完成自界說通明配景的tabbar的全體內容，願望這篇文章對年夜家能有所贊助。

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