IOS實現自訂透明背景的tabbar_IOS

話不多說，直接看範例程式碼

```//  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];  //覆蓋原生Tabbar的上橫線//  [[UITabBar appearance] setShadowImage:[self createImageWithColor:[UIColor clearColor]]];//背景圖片為透明色//  [[UITabBar appearance] setBackgroundImage:[self createImageWithColor:[UIColor clearColor]]];  self.tabBar.backgroundColor = [UIColor clearColor];//設定為半透明  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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