ASIHTTPRequest一个实例

来源：互联网发布：office画图软件 visio 编辑：程序博客网时间：2024/06/18 18:26

ASIHTTPRequest用法不多介绍，网上一堆，实例如图

1 #import <UIKit/UIKit.h>2 #import "MainView.h"3 4 @interface AppDelegate : UIResponder <UIApplicationDelegate>5 6 @property (strong, nonatomic) UIWindow *window;7 @property (strong, retain) MainView *viewController;8 9 @end

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 1 - (void)dealloc 2 { 3     [_window release]; 4     [_viewController release]; 5     [super dealloc]; 6 } 7  8 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions 9 {10     CGRect screenBounds=[[UIScreen mainScreen]applicationFrame];11     CGRect windowBounds=screenBounds;12     windowBounds.origin.y=0;13     self.window = [[[UIWindow alloc] initWithFrame:screenBounds] autorelease];14     // Override point for customization after application launch.15     self.viewController=[[MainView alloc]initWithFrame:windowBounds];16     self.window.backgroundColor = [UIColor whiteColor];17     [self.window addSubview: self.viewController];18     [self.window makeKeyAndVisible];19     return YES;20 }

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 1 #import <UIKit/UIKit.h> 2 #import "ASIHTTPRequest.h" 3  4 @interface MainView : UIView 5 { 6     UIButton *btn1; 7     NSOperationQueue *queue; 8     ASIHTTPRequest *request; 9     UIProgressView *progressView;10 }11 12 - (IBAction)grabURL:(id)sender;13 14 @end

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  1 #import "MainVIew.h"  2   3 @implementation MainView  4   5 - (id)initWithFrame:(CGRect)frame  6 {  7     self = [super initWithFrame:frame];  8     if (self) {  9         //队列 10         queue = [[NSOperationQueue alloc] init]; 11          12         btn1 = [UIButton buttonWithType:UIButtonTypeRoundedRect]; 13         [btn1 setFrame:CGRectMake(50, 50, 100, 50)]; 14         [btn1 setTitle:@"下载" forState:UIControlStateNormal]; 15          16         btn1.titleLabel.font = [UIFont boldSystemFontOfSize:14]; 17         btn1.titleEdgeInsets = UIEdgeInsetsMake(0, 0, 0, 16); 18         [btn1 addTarget:self 19                              action:@selector(grabURLInTheBackground:) 20                    forControlEvents:UIControlEventTouchUpInside];     21         //进度条 22         progressView = [[UIProgressView alloc] initWithFrame:CGRectMake(0.0f, 40.0f, 220.0f, 90.0f)]; 23         [progressView setProgressViewStyle: UIProgressViewStyleDefault]; 24          25         [self addSubview:btn1]; 26         [self addSubview:progressView]; 27     } 28     return self; 29 } 30  31 -(void) dealloc 32 { 33     [request clearDelegatesAndCancel]; 34     [request release]; 35     request = nil; 36     [progressView release]; 37     [queue release]; 38     [btn1 release]; 39     [super dealloc]; 40 } 41  42 //多线程异步 43 - (IBAction)grabURLInTheBackground:(id)sender 44 { 45      46     NSURL *url = [NSURL URLWithString:@"http://allseeing-i.com"]; 47     request = [ASIHTTPRequest requestWithURL:url]; 48     [request setDelegate:self]; 49     [request setDidFinishSelector:@selector(requestDone:)]; 50     [request setDidFailSelector:@selector(requestWentWrong:)]; 51     [request setDownloadProgressDelegate:progressView]; 52     [queue addOperation:request]; 53      54 } 55  56 - (void)requestDone:(ASIHTTPRequest *)request 57 { 58     NSString *responseString = [request responseString]; 59     NSLog(@"responseString=%@",responseString); 60 } 61  62 - (void)requestWentWrong:(ASIHTTPRequest *)request 63 { 64     NSError *error = [request error]; 65 } 66  67 //异步 68 - (IBAction)grabURLInBackground:(id)sender 69 { 70      71     NSURL *url = [NSURL URLWithString:@"http://allseeing-i.com"]; 72      73     request= [ASIHTTPRequest requestWithURL:url]; 74      75     [request setDelegate:self]; 76      77     [request startAsynchronous]; 78      79 } 80  81 - (void)requestFinished:(ASIHTTPRequest *)request 82 { 83     // 当以文本形式读取返回内容时用这个方法 84     NSString *responseString = [request responseString]; 85      86     // 当以二进制形式读取返回内容时用这个方法 87     NSData *responseData = [request responseData]; 88      89     NSLog(@"responseString=%@",responseString); 90      91     [responseString autorelease]; 92     [responseData autorelease]; 93  94      95 } 96  97 - (void)requestFailed:(ASIHTTPRequest *)request 98 { 99     100     NSError *error = [request error];101     [error autorelease];102     103 }104 105 //同步106 - (IBAction)grabURL:(id)sender107 {108     NSURL *url = [NSURL URLWithString:@"http://allseeing-i.com"];109     110     request = [ASIHTTPRequest requestWithURL:url];111     112     [request startSynchronous];113     114     NSError *error = [request error];115     116     if (!error) {117         118         NSString *response = [request responseString];119         NSLog(@"response=%@",response);120         121     }122     123 }124 125 @end

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from:http://www.cnblogs.com/pengyingh/articles/2354270.html