Objective-C implements custom translucent navigation

#define kScreenWidth [[UIScreen mainScreen] bounds].
#define kScreenHeight [[UIScreen mainScreen] bounds].
 
#import ""
 
@implementation RSwenNav
{
 UIVisualEffectView *effectview;
}
-(instancetype)initWithFrame:(CGRect)frame{
 self=[super initWithFrame:frame];
 if (self) {
  UIBlurEffect *blur = [UIBlurEffect effectWithStyle:UIBlurEffectStyleLight];
 effectview = [[UIVisualEffectView alloc] initWithEffect:blur];
 =frame;
 [self addSubview:effectview];
 [self addSubviews];
 }
 return self;
}
 
//Add navigation subview-(void)addSubviews{
 [self addSubview:];
 [self addSubview:];
 [self addSubview:];
 
}
-(UIButton *)backBtn{
 UIButton * btn=[UIButton buttonWithType:UIButtonTypeCustom];
 =CGRectMake(20, 20, 60, 44);
 [btn setTitle:@"return" forState:UIControlStateNormal];
 [btn addTarget:self action:@selector(RSwenNavback) forControlEvents:UIControlEventTouchUpInside];
 return btn;
}
 
-(UILabel *)titleLabel{
 UILabel * lable=[[UILabel alloc]init];
 =[UIFont systemFontOfSize:17];
 =NSTextAlignmentCenter;
 =CGRectMake(100, 20, kScreenWidth-200, 44);
 =@"My Homepage";
 return lable;
}
 
-(UIButton *)rightBtn{
 UIButton * btn=[UIButton buttonWithType:UIButtonTypeCustom];
 =CGRectMake([UIScreen mainScreen].-100, 20, 80, 44);
 [btn setTitle:@"save" forState:UIControlStateNormal];
 [btn addTarget:self action:@selector(rightBtnClicked) forControlEvents:UIControlEventTouchUpInside];
 return btn;
}
 
#pragma event handling section 
//Return to the previous interface-(void)RSwenNavback{
 //Get the upper UIViewController of the UIView id object = [self nextResponder];
 while (![object isKindOfClass:[UIViewController class]] &&
  
  object != nil) {
  
 object = [object nextResponder];
  
 }
 UIViewController *uc=(UIViewController*)object;
 
 [ popViewControllerAnimated:YES];
}
 
//The button on the right is clicked-(void)rightBtnClicked{
 if ([_delegate respondsToSelector:@selector(RSwenNavrightBtnClicked)]) {
 [_delegate RSwenNavrightBtnClicked];
 }
}
 
@end