ios 自定义状态栏和导航栏
开发ios app 经常会根据需求更改状态栏和导航栏，这里整理了几种方法，大家可以看下。
导航栏透明
我要评论
-(void)viewwillappear:(bool)animated { //viewwillappear中设置透明
[super viewwillappear:animated];
[self.navigationbar setbackgroundimage:[uiimage new] forbarmetrics:uibarmetricsdefault]; //用空图片填充机位透明
[self.navigationbar setshadowimage:[uiimage new]];//navibar底部的seperatorline
}
-(void)viewdiddisappear:(bool)animated { //viewwillappear中设置恢复
[super viewdiddisappear:animated];
[self.navigationbar setbackgroundimage:nil forbarmetrics:uibarmetricsdefault];
[self.navigationbar setshadowimage:shadowimage];
}
导航栏渐变
barimageview = self.navigationcontroller.navigationbar.subviews.firstobject;
-(void)scrollviewdidscroll:(uiscrollview *)scrollview {
cgfloat minalphaoffset = - 64;
cgfloat maxalphaoffset = 200;
cgfloat offset = scrollview.contentoffset.y;
cgfloat alpha = (offset - minalphaoffset) / (maxalphaoffset - minalphaoffset); _barimageview.alpha = alpha;
}
状态栏字体颜色改变
[uiapplication sharedapplication].statusbarstyle = uistatusbarstyledefault;//黑色 [uiapplication sharedapplication].statusbarstyle = uistatusbarstylelightcontent;//白色
导航栏隐藏
如果导航栏自定义度高，需要完全自己重写，可以隐藏原来的导航栏，并定义一个新的view
-(void)viewwillappear:(bool)animated {
[super viewwillappear:animated];
self.navigationcontroller.navigationbarhidden = yes;
}
-(void)viewdiddisappear:(bool)animated {
[super viewdiddisappear:animated];
self.navigationcontroller.navigationbarhidden = no;
}
-(void)ys_initnavigationbar {
self.navigationcontroller.interactivepopgesturerecognizer.delegate = (id)self; // 保留右滑pop的手势
_navibar = [[uiview alloc] initwithframe:cgrectmake(0, 0, self.view.width, 64)];
_navibar.backgroundcolor = [uicolor whitecolor];
[self.view addsubview:_navibar];
uiview *line = [[uiview alloc] initwithframe:cgrectmake(0, _navibar.height-0.5, self.view.width, 0.5)];
line.backgroundcolor = [uicolor colorforhex:@"f0f0f0"];
[_navibar addsubview:line];
// 返回
backbutton = [uibutton buttonwithtype:uibuttontypecustom];
backbutton.frame = cgrectmake(0, 20, 44, 44);
[backbutton addtarget:self action:@selector(goback:) forcontrolevents:uicontroleventtouchupinside];
[self.view addsubview:backbutton];
// 标题
navilable = [[uibutton alloc] initwithframe:cgrectmake(44, 20, self.view.width-44*2, 44)];
navilable.backgroundcolor = [uicolor clearcolor];
navilable.font = [uifont systemfontofsize:16];
navilabel.textalignment = nstextalignmentcenter;
[self.view addsubview: navilable];
}
-(void)scrollviewdidscroll:(uiscrollview *)scrollview {
//navigationbar change
cgfloat minalphaoffset = 0;
cgfloat maxalphaoffset = 40;
cgfloat offset = scrollview.contentoffset.y;
cgfloat alpha = (offset - minalphaoffset) / (maxalphaoffset - minalphaoffset);
_navibar.alpha = alpha;
navilabel.alpha = alpha;
}
如对本文有疑问， 点击进行留言回复！！
IOS开发教程第一季之UI进阶day8合并IOS学习019--敲击、长按、轻扫、旋转，CALayer、锚点，CADisolayLink刷新，核心动画，关键帧动画，组动画，转场动画，画板案例
iOS开发——AVPlayer自定义播放器（持续更新，学习中）
网友评论