.h文件中
#import <UIKit/UIKit.h>
//继承自UIView
@interface PYTarBar : UIView
//数组是用来接收UIButton的,实现点击的viewcontroller界面切换
@property(nonatomic,retain)NSArray *items;
//类方法初始化tabBar
+ (id)tabBar;
//block方法,观察button点击对象,实现具体跳转的界面
@property(nonatomic,copy)void (^tabbarItemSelected)(NSInteger index);
@end
.m文件中
#import "PYTarBar.h"
//设置button的tag值
#define btnTag 99
@interface PYTarBar()
//可以通过这个来设置背景图片
@property(nonatomic,weak)UIImageView *background;
@end
@implementation PYTarBar
+ (id)tabBar{
return [[self alloc] init];
}
//懒加载背景图片的设置
- (UIImageView *)background{
if (!_background) {
//设置背景图片
UIImageView *background = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"panelbottompart1"]];
background.frame = CGRectMake(0, 0, Screen_width, 60);
//一定要打开交互性,否则无法实现点击
background.userInteractionEnabled = YES;
//建立父子关系
[self addSubview:background];
//赋值
_background = background;
}
return _background;
}
//set方法实现items的的实现
- (void)setItems:(NSArray *)items{
//保存成员变量
_items = items;
CGFloat aveWidth = (Screen_width - 10) / items.count;
//添加子控件
for (int i = 0; i < items.count; i ++) {
UIButton *btn = items[i];
[self.background addSubview:btn];
btn.tag = btnTag + i;
//设置frame,必须先给确定的大小
btn.frame = CGRectMake( i*aveWidth, 0, aveWidth, 60);
//添加响应事件
[btn addTarget:self action:@selector(btnAction:) forControlEvents:UIControlEventTouchUpInside];
}
//默认选中第一个选项
[self btnAction:items[0]];
}
//监听事件
- (void)btnAction:(UIButton *)btn{
if (btn.selected) {
return;
}
//先清空就可以每次只选中一个
for (UIButton *tempBtn in self.items) {
tempBtn.selected = NO;
}
btn.selected = YES;
//通过tag值的临时标记来使用
NSInteger Index = btn.tag - btnTag;
#pragma mark ======== 在这里修改selected的状态
if (self.tabbarItemSelected) {
self.tabbarItemSelected(Index);
}
}
#pragma mark ============= 系统提供的方法,当视图即将被安装到某一个视图; 并且会把目标视图指针地址传递进来
- (void)willMoveToSuperview:(UIView *)newSuperview{
self.backgroundColor = [UIColor whiteColor];
self.frame = CGRectMake(0, newSuperview.frame.size.height - 60, newSuperview.frame.size.width, 60);
}
@end
用一个view来自定义tabbarController,可以实现隐藏
原文:http://www.cnblogs.com/shemiou/p/4940266.html