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Objective-C实现自定义的半透明导航

2019年07月24日  | 移动技术网移动技术  | 我要评论

本文实例为大家分享了objective-c半透明导航的具体实现代码，供大家参考，具体内容如下

#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;
}
 
//添加导航子视图
-(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=@"我的主页";
 return lable;
}
 
-(uibutton *)rightbtn{
 uibutton * btn=[uibutton buttonwithtype:uibuttontypecustom];
 btn.frame=cgrectmake([uiscreen mainscreen].bounds.size.width-100, 20, 80, 44);
 [btn settitle:@"保存" forstate:uicontrolstatenormal];
 [btn addtarget:self action:@selector(rightbtnclicked) forcontrolevents:uicontroleventtouchupinside];
 return btn;
}
 
#pragma 事件处理部分
 
//返回上个界面
-(void)rswennavback{
 //获取uiview的上层uiviewcontroller
 id object = [self nextresponder];
 while (![object iskindofclass:[uiviewcontroller class]] &&
  
  object != nil) {
  
 object = [object nextresponder];
  
 }
 uiviewcontroller *uc=(uiviewcontroller*)object;
 
 [uc.navigationcontroller popviewcontrolleranimated:yes];
}
 
//右侧按钮被点击
-(void)rightbtnclicked{
 if ([_delegate respondstoselector:@selector(rswennavrightbtnclicked)]) {
 [_delegate rswennavrightbtnclicked];
 }
}
 
@end

以上就是本文的全部内容，希望对大家的学习有所帮助。

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