1:封装网络请求 类

#import 
     
      #import "ASIFormDataRequest.h"#import "Reachability.h"@protocol NetWorkDelegate;@interface JSNetWord : NSObject
      
       +(id)ShareNetwork;-(void)NetWorkWithConnctId:(int)connectid body:(NSString *)body PostBody:(NSString *)PostBody aDelegate:(id
       
        )delegate;@end@protocol NetWorkDelegate 
        
         -(void)NetWorkWithConnectId:(int)connectid  aBackString:(NSString *)backString withState:(int) state;@end#import "JSNetWord.h"@implementation JSNetWord+(id)ShareNetwork{    static dispatch_once_t onceToken;    static JSNetWord *netWork=nil;    dispatch_once(&onceToken, ^{        netWork=[[JSNetWord alloc] init];    });    return netWork;}//网络请求-(void)NetWorkWithConnctId:(int)connectid body:(NSString *)body PostBody:(NSString *)PostBody aDelegate:(id
         
          )delegate{    if([self IsConnect]){        UIAlertView *alertview=[[UIAlertView alloc] initWithTitle:nil message:@"请联网" delegate:self cancelButtonTitle:@"OK" otherButtonTitles: nil];        [alertview show];        [alertview release];        if(delegate && [delegate respondsToSelector:@selector(NetWorkWithConnectId:aBackString:withState:)]){          [delegate NetWorkWithConnectId:connectid aBackString:nil withState:1];        }        return;    }    ASIFormDataRequest *Request=[ASIFormDataRequest requestWithURL:[NSURL URLWithString:@"http://61.177.61.252/szzssw/taxCommon.action?code=1001&pagecode=1&menucode=3300000000"]];    Request.timeOutSeconds=30;    Request.requestMethod=@"POST";    Request.delegate=self;    NSArray *PostBodyArrary=[PostBody componentsSeparatedByString:@"&"];    for(NSString *temp in PostBodyArrary){        NSArray *postArray=[temp componentsSeparatedByString:@"="];        [Request setPostValue:postArray[1] forKey:postArray[2]];    }    //封装参数    NSString *cid=[NSString stringWithFormat:@"%zi",connectid];    Request.userInfo=@{
   @"cid":cid,@"delegate":delegate};    [Request startAsynchronous];}#pragma mark -ASIHttpRequest delegate-(void)requestStarted:(ASIHTTPRequest *)request{    //可以加入 toast}-(void)requestFinished:(ASIHTTPRequest *)request{    NSDictionary *dic=request.userInfo;   int connectid= [dic[@"cid"] intValue];    id
          
            delegate=dic[@"delegate"]; if (delegate &&[delegate respondsToSelector:@selector(NetWorkWithConnectId:aBackString:withState:)]) { [delegate NetWorkWithConnectId:connectid aBackString:[ request responseString] withState:1]; } }-(void)requestFailed:(ASIHTTPRequest *)request{ NSDictionary *dic=request.userInfo; int connectid= [dic[@"cid"] intValue]; id
           
             delegate=dic[@"delegate"]; NSLog(@"错误原因:-->%@",request.error.localizedDescription); if(delegate &&[delegate respondsToSelector:@selector(NetWorkWithConnectId:aBackString:)]){ [delegate NetWorkWithConnectId:connectid aBackString:[request responseString] withState:1]; } UIAlertView *alertview=[[UIAlertView alloc] initWithTitle:@"提示" message:@"请求失败" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles: nil]; [alertview show]; [alertview release];}//判断是否联网-(BOOL)IsConnect{ BOOL IsCon=NO; Reachability *r=[Reachability reachabilityWithHostName:@"www.baidu.com"]; switch ([r currentReachabilityStatus]) { case NotReachable: NSLog(@"not network"); IsCon=NO; break; case ReachableViaWiFi: NSLog(@"wifi"); IsCon=YES; break; case ReachableViaWWAN: NSLog(@"3g"); IsCon=YES; break; default: break; } return IsCon;}@end
           
          
         
        
       
      
     

封装上下拉tableview .

配置步骤：英文原文和类库下载地址:

• 添加 QuartzCore.framework 到你的工程中。
• 将 EGOTableViewPullRefresh 拖到你的工程目录下。
• 查看 PullTableView.h 文件可用的属性。
• 添加一个PullTableView 到你代码中，实现PullTableViewDelegate委托方法

#import 
     
      #import "PullTableView.h"@interface JSContentView : UIView
      
       -(id)initWithFrame:(CGRect)frame requestSEL:(SEL)aselector aDelegate:(id)delegate;@property(nonatomic,assign)int Pagecode;@property(nonatomic,readonly)PullTableView *tableview;@property(nonatomic,retain)NSMutableArray *mydata;@end#import "JSContentView.h"#import "MyCell.h"@interface JSContentView (){    SEL selector;    id delegate;}@end@implementation JSContentView#pragma mark -初始化-(id)initWithFrame:(CGRect)frame requestSEL:(SEL)aselector aDelegate:(id)adelegate{    self=[super initWithFrame:frame];    if(self){        self.mydata=[NSMutableArray array];        _tableview =[[PullTableView alloc] initWithFrame:self.bounds style:UITableViewStylePlain];        _tableview.delegate=self;        _tableview.dataSource=self;        _tableview.pullDelegate=self;                //设置pulltableview 的背景色        _tableview.pullBackgroundColor=[UIColor clearColor];        _tableview.pullTextColor=[UIColor blackColor];                [self addSubview:_tableview];        selector=aselector;        delegate=adelegate;                //第一次加载的时候默认要刷新。        if(!self.tableview.pullTableIsRefreshing){            self.tableview.pullTableIsRefreshing=YES;            if (delegate&&[delegate respondsToSelector:selector]) {                [delegate performSelector:selector];            }        }        self.tableview.pullTableIsLoadingMore=NO;    }    return self;}- (void)dealloc{    [_mydata release];    [super dealloc];}#pragma mark -tableview dataSource-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{    return 1;}-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{    return self.mydata.count;}-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{   static NSString *cellIdentify=@"myCell";    MyCell *cell=[tableView dequeueReusableCellWithIdentifier:cellIdentify];    if (cell==nil) {        cell=[[[MyCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentify] autorelease];    }   NSDictionary *dic=self.mydata[indexPath.row];   cell.value=dic;   return cell;}#pragma mark -tableview delegate-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{    return 80;}
      
     

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

 

    NSString *str = [NSStringstringWithFormat:@"%d",indexPath.row];

    if(self.delegate && [self.delegate respondsToSelector:@selector(EnterDetailPage:)]){

        [self.delegate performSelector:@selector(EnterDetailPage:) withObject:str];

    }

}

在viewcontroller里面运用起来。

#import 
     
      #import "JSContentView.h"#import "JSNetWord.h"@interface ViewController : UIViewController
      
       @end===========#import "ViewController.h"#import "MyCell.h"@interface ViewController (){    JSContentView *newView;}@property(nonatomic,retain)NSMutableArray *dataArray;@end@implementation ViewController- (void)viewDidLoad{    [super viewDidLoad];    newView=[[JSContentView alloc] initWithFrame:self.view.bounds requestSEL:@selector(RequestData) aDelegate:self];    [self.view addSubview:newView];    [newView release];    //如果开始启用缓存//    NSString *cache=[self readApiCacheFileName:@"1.txt"];//    if (cache.length>0 &&newView.Pagecode<=1) {//          [self NetWorkWithConnectId:100 aBackString:cache withState:0];//    }     }-(void)RequestData{    NSString *url=[NSString stringWithFormat:@"http://61.177.61.252/szzssw/taxCommon.action?code=1001&pagecode=%zi&menucode=3300000000",newView.Pagecode==0?1:newView.Pagecode];    //请求数据，重新刷新数据    [[JSNetWord ShareNetwork] NetWorkWithConnctId:100 body:url PostBody:nil aDelegate:self];    //先从缓存中读取    NSString *cache=[self readApiCacheFileName:@"1.txt"];        if (cache.length>0 &&newView.Pagecode==1) {        [self NetWorkWithConnectId:100 aBackString:cache withState:0];    }}#pragma mark -network delegate-(void)NetWorkWithConnectId:(int)connectid aBackString:(NSString *)backString withState:(int)state{    if(connectid==100){
    //1：代表网络 0代表缓存        if (newView.Pagecode<=1 && state==1) {            newView.tableview.pullTableIsRefreshing=NO;        }        if (newView.Pagecode>1) {            newView.tableview.pullTableIsLoadingMore=NO;        }                            NSDictionary *dic=[backString JSONValue];        NSString *dealcode=dic[@"dealcode"];        if (![dealcode isEqualToString:@"0000"]) {            return;        }             if (newView.Pagecode==1) {            [self saveApiCacheFileName:@"1.txt" textContent:backString Append:NO];        }        if (newView.Pagecode==1 &&newView.mydata.count>0) {            [newView.mydata removeAllObjects];        }        NSArray *data=dic[@"content"];        [newView.mydata addObjectsFromArray:data];        [newView.tableview reloadData];           }}
      
     

-(void)EnterDetailPage:(NSString *)row{

    int r=[row intValue];

    NSDictionary *dic=newView.mydata[r];

    NSLog(@"%@",dic[@"title"]);

    //可以创建指定controlview。

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

//    ......

}

-(void)viewDidUnload{    [super viewDidUnload];    self.dataArray=nil;}- (void)dealloc{    [_dataArray release];    [super dealloc];}@end

其中自定义cell

#import 
     
      @interface MyCell : UITableViewCell@property(nonatomic,retain)NSDictionary *value;@end#import "MyCell.h"#define KTitleFont 15#define KFont 12#define Kpadding 10@interface MyCell (){    UILabel *titleLb;    UILabel *Contetlb;    UILabel *dataLb;}@end@implementation MyCell- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];    if (self) {        titleLb=[UILabel LabWithFrame:CGRectZero text:@"" textColor:[UIColor redColor] textAlign:NSTextAlignmentLeft font:[UIFont systemFontOfSize:KTitleFont]];       // Contetlb=[UILabel LabWithFrame:CGRectZero text:@"" textColor:[UIColor blackColor] textAlign:NSTextAlignmentRight font:[UIFont systemFontOfSize:KFont]];        dataLb=[UILabel LabWithFrame:CGRectZero text:@"" textColor:[UIColor blackColor] textAlign:NSTextAlignmentLeft font:[UIFont systemFontOfSize:KFont]];        [self.contentView addSubview:titleLb];        [self.contentView addSubview:dataLb];    }    return self;}-(void)setValue:(NSDictionary *)value{    if(_value!=value){        [_value release];        _value=[value retain];        titleLb.text=value[@"title"];        dataLb.text=value[@"time"];    }}-(void)layoutSubviews{    [super layoutSubviews];    CGFloat width=self.contentView.bounds.size.width;    CGFloat height=self.contentView.bounds.size.height*0.5f;    CGFloat titlex=Kpadding;    CGFloat titley=Kpadding;    CGFloat titlew=width-2*Kpadding;    CGFloat titleh=height;    titleLb.frame=CGRectMake(titlex, titley, titlew, titleh);        CGFloat dx=titlex;    CGFloat dy=titley+titleh;    CGFloat dw=titlew;    CGFloat dh=height-Kpadding;    dataLb.frame=CGRectMake(dx, dy, dw, dh);    }@end
     

 

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