IOS学习之路十二（UITableView下拉刷新页面）

今天做了一个下拉刷新的demo,主要用到了实现的开源框架是:https://github.com/enormego/EGOTableViewPullRefresh

运行结果如下：

实现很简单下载源代码，加压后把

然后拷贝资源文件和EGORefreshTableHeaderView.h和EGORefreshTableHeaderView.m到相依的工程中.

添加QuartzCore.framework组建：

在tableview所在的类中添加如下代码:

TableViewController.h

#import <UIKit/UIKit.h>
#import "EGORefreshTableHeaderView.h"

@interface TableViewController : UITableViewController<UITableViewDataSource,UITableViewDelegate,EGORefreshTableHeaderDelegate>{
    BOOL isflage;
    BOOL _reloading;
    EGORefreshTableHeaderView *_refreshHeaderView;

}
@property (strong, nonatomic) IBOutlet UITableView *myTableView;
//重新加载时调用的的方法
- (void)reloadTableViewDataSource;
//完成加载时调用的方法
- (void)doneLoadingTableViewData;
@end

TableViewController.m

//
//  TableViewController.m
//  EGOTableViewPullRefreshDemo
//
//  Created by WildCat on 13-8-16.
//  Copyright (c) 2013年 wildcat. All rights reserved.
//

#import "TableViewController.h"

@interface TableViewController ()

@end

@implementation TableViewController
@synthesize myTableView;

- (id)initWithStyle:(UITableViewStyle)style
{
    self = [super initWithStyle:style];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{

        if (_refreshHeaderView==nil) {
            //初始化下拉刷新空间
            EGORefreshTableHeaderView *view1=[[EGORefreshTableHeaderView alloc] initWithFrame:CGRectMake(0.0f, 10.0f-self.myTableView.bounds.size.height, self.myTableView.bounds.size.width, self.view.bounds.size.height)];
            view1.delegate = self;
            [self.myTableView addSubview:view1];
            _refreshHeaderView = view1;
        }

    [_refreshHeaderView refreshLastUpdatedDate];
}

- (void)viewDidUnload
{
    [self setMyTableView:nil];
    _refreshHeaderView=nil;
    [super viewDidUnload];

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
#pragma mark onClick
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    isflage=!isflage;
    [super.navigationController setNavigationBarHidden:isflage animated:TRUE];
    [super.navigationController setToolbarHidden:isflage animated:TRUE];
}
#pragma mark - Table view data source
-(NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{
    return [NSString stringWithFormat:@"标题"];

}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return 1;
}

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

    return 10;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"MyCell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    if (cell==nil) {
        cell=[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
    }
    cell.textLabel.text=[NSString stringWithFormat:@"这是第 %i 行",indexPath.row];
    return cell;
}

#pragma mark - Table view delegate

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    // Navigation logic may go here. Create and push another view controller.
    /*
     <#DetailViewController#> *detailViewController = [[<#DetailViewController#> alloc] initWithNibName:@"<#Nib name#>" bundle:nil];
     // ...
     // Pass the selected object to the new view controller.
     [self.navigationController pushViewController:detailViewController animated:YES];
     */
}
#pragma mark –
#pragma mark Data Source Loading / Reloading Methods
//重新加载时调用
- (void)reloadTableViewDataSource{
    NSLog(@"==开始加载数据");
    _reloading = YES;
}

//完成加载时调用的方法

- (void)doneLoadingTableViewData{
    NSLog(@"===加载完数据");
    _reloading = NO;
    [_refreshHeaderView egoRefreshScrollViewDataSourceDidFinishedLoading:self.myTableView];
}
#pragma mark –
#pragma mark UIScrollViewDelegate Methods
//滚动控件时的委托方法

- (void)scrollViewDidScroll:(UIScrollView *)scrollView{
    [_refreshHeaderView egoRefreshScrollViewDidScroll:scrollView];
}

- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{
    [_refreshHeaderView egoRefreshScrollViewDidEndDragging:scrollView];
}
#pragma mark –
#pragma mark EGORefreshTableHeaderDelegate Methods
//下拉被调用的委托方法
- (void)egoRefreshTableHeaderDidTriggerRefresh:(EGORefreshTableHeaderView*)view{
    [self reloadTableViewDataSource];
    [self performSelector:@selector(doneLoadingTableViewData) withObject:nil afterDelay:3.0];
}
//放回当前是刷新还是无刷新状态
- (BOOL)egoRefreshTableHeaderDataSourceIsLoading:(EGORefreshTableHeaderView*)view{
    return _reloading;
}
//返回刷新时间的回调方法
- (NSDate*)egoRefreshTableHeaderDataSourceLastUpdated:(EGORefreshTableHeaderView*)view{
    return [NSDate date];
}
@end

这样就可以成功运行了，如果想把加载改为汉语可以在：

EGORefreshTableHeaderView.m源码中的

- (void)setState:(EGOPullRefreshState)aState函数的相应位置修改：

- (void)setState:(EGOPullRefreshState)aState{

	switch (aState) {
		case EGOOPullRefreshPulling:

			_statusLabel.text = NSLocalizedString(@"松开可以刷新...", @"Release to refresh status");
			[CATransaction begin];
			[CATransaction setAnimationDuration:FLIP_ANIMATION_DURATION];
			_arrowImage.transform = CATransform3DMakeRotation((M_PI / 180.0) * 180.0f, 0.0f, 0.0f, 1.0f);
			[CATransaction commit];

			break;
		case EGOOPullRefreshNormal:

			if (_state == EGOOPullRefreshPulling) {
				[CATransaction begin];
				[CATransaction setAnimationDuration:FLIP_ANIMATION_DURATION];
				_arrowImage.transform = CATransform3DIdentity;
				[CATransaction commit];
			}

			_statusLabel.text = NSLocalizedString(@"下拉刷新...", @"Pull down to refresh status");
			[_activityView stopAnimating];
			[CATransaction begin];
			[CATransaction setValue:(id)kCFBooleanTrue forKey:kCATransactionDisableActions];
			_arrowImage.hidden = NO;
			_arrowImage.transform = CATransform3DIdentity;
			[CATransaction commit];

			[self refreshLastUpdatedDate];

			break;
		case EGOOPullRefreshLoading:

			_statusLabel.text = NSLocalizedString(@"加载中...", @"Loading Status");
			[_activityView startAnimating];
			[CATransaction begin];
			[CATransaction setValue:(id)kCFBooleanTrue forKey:kCATransactionDisableActions];
			_arrowImage.hidden = YES;
			[CATransaction commit];

			break;
		default:
			break;
	}

	_state = aState;
}