UITableView控制头部View

首先我们先集成一个UIView做一个自己的View

#import <UIKit/UIKit.h>

@interface MyView : UIView

@property (nonatomic,strong)UIView * commentView;

@end

在实现文件里重写系统的- (UIView*)hitTest:(CGPoint)point withEvent:(UIEvent *)event方法

#import "MyView.h"

@implementation MyView

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

{

UIView *result = [super hitTest:point withEvent:event];

if (result == self) {

return nil;

} else {

return result;

}

}

@end

然后我们转回到ViewController里首先我们导入我们实现的MyView，并创建一个它的属性，然后写一个UITableView的属性，并实现它的dai代理，

#import "ViewController.h"

#import "MyView.h"

@interface ViewController ()<UITableViewDataSource,UITableViewDelegate>

@property (nonatomic,strong)UITableView * tableView;

@property (nonatomic,strong)MyView * headerView;

@end

接下来 我们就可以实现TableVeiw的代理方法和创建，然后我们设置TableView和headerView并用观察者观察tableVeiw的偏移量，代码实现如下

- (void)viewDidLoad {

[super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

self.automaticallyAdjustsScrollViewInsets = NO;

self.tableView = [[UITableView alloc] initWithFrame:CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height) style:UITableViewStylePlain];

self.tableView.dataSource = self;

self.tableView.delegate = self;

[self.view addSubview:self.tableView];

[self.tableView addObserver:self forKeyPath:@"contentOffset" options:NSKeyValueObservingOptionNew context:nil];

self.headerView = [[MyView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 200 )];

self.moreButtonView.frame = CGRectMake(0, self.headerView.frame.size.height - 50, [UIScreen mainScreen].bounds.size.width, 50) ;

self.headerView.backgroundColor =[UIColor redColor];

[self.headerView addSubview:self.moreButtonView];

[self.view addSubview:self.headerView];

}

- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context

{

if ([keyPath isEqualToString:@"contentOffset"])

{

CGPoint offset = [change[NSKeyValueChangeNewKey] CGPointValue];

NSLog(@"%f",offset.y);

if (offset.y <= 0 && -offset.y >= 114) {

if (-offset.y >= 200) {

return;

}

//            UILabel * label = (UILabel*)[self.headerView viewWithTag:110];

//            [label removeFromSuperview];

CGRect newFrame = CGRectMake(0, 0, self.view.frame.size.width, -offset.y);

[UIView animateWithDuration:1 animations:^{

[self.myLabel removeFromSuperview];

self.headerView.backgroundColor = [UIColor redColor];

}];

self.headerView.frame = newFrame;

CGRect newViewRect = CGRectMake(0, self.headerView.bounds.size.height - 64 , [UIScreen mainScreen].bounds.size.width, 64);

UIView * view = (UIView*)[self.headerView viewWithTag:110];

view.frame = newViewRect;

if (-offset.y <=200)

{

self.tableView.contentInset = UIEdgeInsetsMake(-offset.y, 0, 0, 0);

}

self.moreButtonView.frame = CGRectMake(0, self.headerView.frame.size.height - 50, [UIScreen mainScreen].bounds.size.width, 50) ;

} else {

CGRect newFrame = CGRectMake(0, 0, self.view.frame.size.width, 64);

self.headerView.frame = newFrame;

//            CGRect viewRect = CGRectMake(0, self.headerView.bounds.size.height - 64 , [UIScreen mainScreen].bounds.size.width, 64);

//            UIView * view = (UIView*)[self.headerView viewWithTag:110];

//            view.frame = viewRect;

[UIView animateWithDuration:1.0 animations:^{

[self.headerView addSubview:self.myLabel];

self.headerView.backgroundColor= [UIColor lightGrayColor];

}];

self.tableView.contentInset = UIEdgeInsetsMake(64, 0, 0, 0);

self.moreButtonView.frame = CGRectMake(0, self.headerView.frame.size.height - 50, [UIScreen mainScreen].bounds.size.width, 50) ;

}

}

}

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView

{

return 1;

}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

{

return 30;

}

- (UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

{

UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];

if (!cell) {

cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"cell"];

}

if (indexPath.row == 0) {

cell.textLabel.text =@"123";

}else

cell.textLabel.text = @"哈哈哈";

return cell;

}

//- (UIView*)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section

//{

//    UIView * view  = [[UIView alloc] initWithFrame:CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, 100)];

//    view.backgroundColor = [UIColor greenColor];

//    return view;

//}

//- (NSString*)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section

//{

//    return @"1";

//}

//- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

//{

//    SKStoreProductViewController * vc = [[SKStoreProductViewController alloc] init];

//    vc.delegate = self;

//    [vc loadProductWithParameters:

//     //appId唯一的

//  @{SKStoreProductParameterITunesItemIdentifier : @"587767923"} completionBlock:^(BOOL result, NSError *error) {

//      //block回调

//      if(error){

//          NSLog(@"error %@ with userInfo %@",error,[error userInfo]);

//      }else{

//          //模态弹出appstore

//          [self presentViewController:vc animated:YES completion:^{

//

//          }

//           ];

//      }

//  }];

//

//}

//- (UIView *)moreButtonView

//{

//    if (_moreButtonView == nil) {

//

//        _moreButtonView = [[UIView alloc] init];

//        _moreButtonView.backgroundColor = [UIColor yellowColor];

//

//        NSArray * arr = @[@"动态",@"关注",@"粉丝"];

//

//        for (int i= 0; i<3; i++) {

//            UIButton * button = [UIButton buttonWithType:UIButtonTypeCustom];

//            button.frame = CGRectMake(([UIScreen mainScreen].bounds.size.width/3)*i, 0, [UIScreen mainScreen].bounds.size.width/3, 50);

//            [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];

//            [button setTitle:[arr objectAtIndex:i] forState:UIControlStateNormal];

//            button.tag = 100 + i;

//            [button addTarget:self action:@selector(buttonClick:) forControlEvents:UIControlEventTouchUpInside];

//            [_moreButtonView addSubview:button];

//        }

//

//

//

//    }

//    return _moreButtonView;

//}

- (NSString*)sql

{

return  @"jianbo_su";

}

- (void)buttonClick:(UIButton*)btn

{

if (btn.tag == 100) {

NSLog(@"su");

UIView * mainView = [[UIView alloc] initWithFrame:self.view.bounds];

mainView.tag = 250;

mainView.backgroundColor = [UIColor lightGrayColor];

mainView.alpha = 0.9;

[self.view addSubview:mainView];

UIView * view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 150, 150)];

view.backgroundColor = [UIColor whiteColor];

view.center = self.view.center;

UITapGestureRecognizer * tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapAction:)];

[view addGestureRecognizer:tap];

[mainView addSubview:view];

}

if (btn.tag == 101) {

NSLog(@"jian");

}

if (btn.tag == 102) {

NSLog(@"bo");

}

}

- (void)tapAction:(UITapGestureRecognizer*)tap

{

UIView * view = (UIView*)[self.view viewWithTag:250];

[view removeFromSuperview];

}

- (UILabel *)myLabel

{

if (_myLabel == nil) {

_myLabel = [[UILabel alloc] initWithFrame:CGRectMake(([UIScreen mainScreen].bounds.size.width/2) - 75 , 10, 150, 40)];

_myLabel.text = @"苏建波";

_myLabel.textAlignment = NSTextAlignmentCenter;

_myLabel.tag = 110;

_myLabel.textColor = [UIColor blackColor];

[self.headerView addSubview:_myLabel];

}

return _myLabel;

}

接下来我们可以看一下效果

需要demo的联系qq:1956305923