OC和Swift中的UITabBar和UINaviGationBar的适配 [UITabbar在IPad中的适配]

作者 sundays http://www.cnblogs.com/sundaysgarden/

OC中UITabbar的适配[iphoneX和Ipad适配]

自定可以UITabar

自定义UITabar头文件

#import <UIKit/UIKit.h>

@interface MCTabBar : UITabBar

@property (nonatomic, strong) UIButton *centerBtn; //中间按钮

@end

自定义UITabar m文件

#import "GBArcView.h"

//#import ""

#define SCREEN_WIDTH [[UIScreen mainScreen] bounds].size.width

#define GBVIEWSCALL 1.2

#define CENTERBUTTONSCALL 1.1

@interface MCTabBar ()

@property (nonatomic,strong) GBArcView *gbview; //半圆View

@property(assign,nonatomic)int index;//UITabBar子view的索引

@end

@implementation MCTabBar

//重新初始化方法，从stroyboard 中加载，会调用

-(instancetype)initWithCoder:(NSCoder *)aDecoder{

if (self = [super initWithCoder:aDecoder]) {

self.backgroundColor=[UIColor whiteColor];

self.clipsToBounds=NO;//不裁剪子控件

self.selectedItem=0;//初始化索引

//设置tabBaritem 的文字颜色

//        [[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:RGB_COLOR(74, 74, 74), UITextAttributeTextColor, nil] forState:UIControlStateNormal];

//

//        [[UITabBarItem appearance] setTitleTextAttributes:                                                         [NSDictionary dictionaryWithObjectsAndKeys:RGB_COLOR(0, 147, 197),UITextAttributeTextColor, nil]forState:UIControlStateSelected];

}

return self;

}

- (instancetype)initWithFrame:(CGRect)frame{

if (self = [super initWithFrame:frame]){

[self initView];

}

return self;

}

- (void)initView{

[self addSubview:_centerBtn];

[self insertSubview:_gbview belowSubview:_centerBtn];

}

//处理超出区域点击无效的问题

- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event{

if (self.hidden){

return [super hitTest:point withEvent:event];

}else {

//转换坐标

CGPoint tempPoint = [self.centerBtn convertPoint:point fromView:self];

//判断点击的点是否在按钮区域内

if (CGRectContainsPoint(self.centerBtn.bounds, tempPoint)){

_centerBtn.selected = YES;

//返回按钮

return _centerBtn;

}else {

_centerBtn.selected = NO;

//            __weak __typeof(&*self)weakSelf =self;

return [super hitTest:point withEvent:event];

}

}

}

//绘制横线

- (void)drawRect:(CGRect)rect {

//中间的按钮宽度是UItabBar的高度，其他按钮的宽度就是，(self.width-self.height)/4.0

CGFloat buttonW = (self.width-self.height)/4.0;

CGContextRef context = UIGraphicsGetCurrentContext();

CGContextSetStrokeColorWithColor(context, [UIColor colorWithRed:200/255.0 green:200/255.0 blue:200/255.0 alpha:0.8].CGColor);

CGContextSetLineWidth(context, SINGLE_LINE_WIDTH + 2.0f);

//    CGContextSetLineWidth(context, 5);

CGContextBeginPath(context);

CGFloat lineMargin =0;

//1PX线，像素偏移

CGFloat pixelAdjustOffset = 0;

if (((int)(1 * [UIScreen mainScreen].scale) + 1) % 2 == 0) {

pixelAdjustOffset = SINGLE_LINE_ADJUST_OFFSET;

}

CGFloat yPos = lineMargin - pixelAdjustOffset;

//第一段线

CGContextMoveToPoint(context, 0, yPos);

CGContextAddLineToPoint(context, buttonW*2+SINGLE_LINE_WIDTH*2, yPos);

CGContextStrokePath(context);

//第二段线

CGContextMoveToPoint(context, buttonW*2+self.frame.size.height-SINGLE_LINE_WIDTH*2, yPos);

CGContextAddLineToPoint(context, self.bounds.size.width, yPos);

CGContextSetStrokeColorWithColor(context, [UIColor colorWithRed:200/255.0 green:200/255.0 blue:200/255.0 alpha:0.8].CGColor);

CGContextStrokePath(context);

}

//自定义按钮的懒加载

-(UIButton *)centerBtn{

if(!_centerBtn){

_centerBtn = [UIButton buttonWithType:UIButtonTypeCustom];

//  设定button大小为适应图片

UIImage *normalImage = [UIImage imageNamed:@"3_gray"];

_centerBtn.frame = CGRectMake(0, 0, normalImage.size.width, normalImage.size.height);

[_centerBtn setImage:normalImage forState:UIControlStateNormal];

UIImage *selectImage  = [UIImage imageNamed:@"3_hover"];

[_centerBtn setImage:selectImage forState:UIControlStateSelected];

//去除选择时高亮

_centerBtn.adjustsImageWhenHighlighted = NO;

//根据图片调整button的位置(图片中心在tabbar的中间最上部，这个时候由于按钮是有一部分超出tabbar的，所以点击无效，要进行处理)

_centerBtn.frame = CGRectMake(([UIScreen mainScreen].bounds.size.width - normalImage.size.width)/2.0, - normalImage.size.height/2.0 + 8, normalImage.size.width, normalImage.size.height);

_centerBtn.transform = CGAffineTransformMakeScale(CENTERBUTTONSCALL, CENTERBUTTONSCALL);

}

return _centerBtn;

}

////自定义半圆View的懒加载

-(UIView *)gbview{

if(!_gbview){

CGFloat buttonW = self.centerBtn.width;

GBArcView *gbview = [[GBArcView alloc]initWithFrame:CGRectMake(0,0,buttonW *GBVIEWSCALL,buttonW*GBVIEWSCALL)];

gbview.backgroundColor=[UIColor whiteColor];

gbview.layer.masksToBounds=YES;

gbview.layer.cornerRadius=buttonW*GBVIEWSCALL*0.5f;

gbview.center = _centerBtn.center;

gbview.transform = CGAffineTransformMakeScale(GBVIEWSCALL, GBVIEWSCALL);

_gbview = gbview;

}

return _gbview;

}

-(void)setHidden:(BOOL)hidden{

[super setHidden:hidden];

//手动设置UITabBar 隐藏时，我们要将自定义的按钮和背景隐藏

[self.gbview setHidden:hidden];

[self.centerBtn setHidden:hidden];

}

//******核心部分******

//当配置  hidesBottomBarWhenPushed 的viewController ,隐藏UITabBar时，会改变其frame，就是将UITabBar 的Y值设为屏幕最大的y值，就不可见。我们重写这个方法，判断当frame的y小于屏幕的高度 ，那么UITabBar就是被隐藏了，这时候我们将自定的控件隐藏。相反的，我们就显示我们的自定义控件。

-(void)setFrame:(CGRect)frame{

//    if (self.superview &&CGRectGetMaxY(self.superview.bounds) !=CGRectGetMaxY(frame)) {

//        frame.origin.y =CGRectGetHeight(self.superview.bounds) -CGRectGetHeight(frame);

//    }

[super setFrame:frame];

if(frame.origin.y>=[UIScreen mainScreen].bounds.size.height){

[self.gbview setHidden:YES];

[self.centerBtn setHidden:YES];

}else{

[self.gbview setHidden:NO];

[self.centerBtn setHidden:NO];

}

}

//适配ipad

//重写traitCollection方法,使UITabbar保持图为垂直排列,防止在ipad11出现水平排列

- (UITraitCollection *)traitCollection {

if (UIDevice.currentDevice.userInterfaceIdiom == UIUserInterfaceIdiomPad) {

return [UITraitCollection traitCollectionWithVerticalSizeClass:UIUserInterfaceSizeClassCompact];

}

return [super traitCollection];

}

@end

在UITabBarController.m文件中设置适配iPhoneX

//利用KVC 将自己的tabbar赋给系统tabBar

ViewDidLoad方法添加如下代码

　　//利用kvc将自定义的文件copy给系统

[self setValue:_mcTabbar forKeyPath:@"tabBar"];

　　给系统的[自定义]的UITabBar添加一个View设置UITabBar的高度

[self setupTabBar];

- (void)setupTabBar{

//删除现有的tabBar

CGRect rect = self.tabBar.frame;

[self.tabBar removeFromSuperview];  //移除TabBarController自带的下部的条

//    [self.tabBarController.tabBar removeFromSuperview];

rect.size.height = 49;

rect.origin.y = [UIScreen mainScreen].bounds.size.height - 49;

UIView *myView = [[UIView alloc] init];

myView.frame = rect;

myView.backgroundColor = [UIColor whiteColor];

[self.view addSubview:myView];

}

自定义UItabBar中引用的文件

GBArcView.h

#define SINGLE_LINE_WIDTH           (1 / [UIScreen mainScreen].scale)

#define SINGLE_LINE_ADJUST_OFFSET   ((1 / [UIScreen mainScreen].scale) / 2)

@interface GBArcView : UIView

@end

GBArch.m

#import <QuartzCore/QuartzCore.h>

#import "Math.h"

#import <CoreGraphics/CoreGraphics.h>

@implementation GBArcView

- (void)drawRect:(CGRect)rect {

CGContextRef context = UIGraphicsGetCurrentContext();

UIColor *color1 = [UIColor colorWithRed:200/255.0 green:200/255.0 blue:200/255.0 alpha:0.8];

CGContextSetStrokeColorWithColor(context, color1.CGColor);

CGContextSetLineWidth(context, SINGLE_LINE_WIDTH + 0.5f);

CGContextBeginPath(context);

//    CGFloat lineMargin =self.frame.size.width*0.5f;

//1px线，偏移像素点

CGFloat pixelAdjustOffset = 0;

if (((int)(1 * [UIScreen mainScreen].scale) + 1) % 2 == 0) {

pixelAdjustOffset = SINGLE_LINE_ADJUST_OFFSET;

}

CGFloat yPos = self.frame.size.width*0.5f - pixelAdjustOffset;

CGFloat xPos = self.frame.size.width*0.5f - pixelAdjustOffset - 4.0f;

CGContextAddArc(context, xPos, yPos, self.frame.size.width*0.5 - 1.f , M_PI*1.08, M_PI*1.95, 0);

CGContextDrawPath(context, kCGPathStroke);

//    CGContextStrokePath(context);

}

@end

适配IPhoneX

定义UITabar的分类实现适配