Objective-C實現自訂的半透明導航_IOS

本文執行個體為大家分享了Objective-C半透明導航的具體實現代碼，供大家參考，具體內容如下

#define kScreenWidth [[UIScreen mainScreen] bounds].size.width#define kScreenHeight [[UIScreen mainScreen] bounds].size.height #import "RSwenNav.h" @implementation RSwenNav{ UIVisualEffectView *effectview;}-(instancetype)initWithFrame:(CGRect)frame{ self=[super initWithFrame:frame]; if (self) {  UIBlurEffect *blur = [UIBlurEffect effectWithStyle:UIBlurEffectStyleLight]; effectview = [[UIVisualEffectView alloc] initWithEffect:blur]; effectview.frame=frame; [self addSubview:effectview]; [self addSubviews]; } return self;} //添加導航子視圖-(void)addSubviews{ [self addSubview:self.backBtn]; [self addSubview:self.titleLabel]; [self addSubview:self.rightBtn]; }-(UIButton *)backBtn{ UIButton * btn=[UIButton buttonWithType:UIButtonTypeCustom]; btn.frame=CGRectMake(20, 20, 60, 44); [btn setTitle:@"返回" forState:UIControlStateNormal]; [btn addTarget:self action:@selector(RSwenNavback) forControlEvents:UIControlEventTouchUpInside]; return btn;} -(UILabel *)titleLabel{ UILabel * lable=[[UILabel alloc]init]; lable.font=[UIFont systemFontOfSize:17]; lable.textAlignment=NSTextAlignmentCenter; lable.frame=CGRectMake(100, 20, kScreenWidth-200, 44); lable.text=@"我的首頁"; return lable;} -(UIButton *)rightBtn{ UIButton * btn=[UIButton buttonWithType:UIButtonTypeCustom]; btn.frame=CGRectMake([UIScreen mainScreen].bounds.size.width-100, 20, 80, 44); [btn setTitle:@"儲存" forState:UIControlStateNormal]; [btn addTarget:self action:@selector(rightBtnClicked) forControlEvents:UIControlEventTouchUpInside]; return btn;} #pragma 事件處理部分 //返回上個介面-(void)RSwenNavback{ //擷取UIView的上層UIViewController id object = [self nextResponder]; while (![object isKindOfClass:[UIViewController class]] &&    object != nil) {   object = [object nextResponder];   } UIViewController *uc=(UIViewController*)object;  [uc.navigationController popViewControllerAnimated:YES];} //右側按鈕被點擊-(void)rightBtnClicked{ if ([_delegate respondsToSelector:@selector(RSwenNavrightBtnClicked)]) { [_delegate RSwenNavrightBtnClicked]; }} @end

以上就是本文的全部內容，希望對大家的學習有所協助。