自己整理的IOS网络检测和版本检测代码

要导入的头文件

#import "Reachability.h"

网络检测代码段 

    BOOL isExistenceNetwork;

Reachability *r = [Reachability reachabilityWithHostName:@"www.apple.com"];

    switch ([r currentReachabilityStatus]) {

        case NotReachable:

isExistenceNetwork=FALSE;

            break;

        case ReachableViaWWAN:

isExistenceNetwork=TRUE;

            break;

        case ReachableViaWiFi:

isExistenceNetwork=TRUE;

            break;

    }

if (!isExistenceNetwork) {

UIAlertView *myalert = [[UIAlertView alloc] initWithTitle:@"网络连接不佳" message:@"请检查网络连接，并重启程序" delegate:self cancelButtonTitle:@"确认" otherButtonTitles:nil,nil];

        myalert.delegate = self;

        myalert.tag = 2;

[myalert show];

[myalert release];

        return YES;

        

}

版本检测代码段

if(AppVersion < version){

            NSString *prompt = [NSString stringWithFormat:@"IBMUnixWorld已更新到%1.1f版本",version];

            UIAlertView *av=[[[UIAlertView alloc] initWithTitle:@"版本更新" message:prompt delegate:self cancelButtonTitle:@"否" otherButtonTitles:@"是", nil] autorelease];

            av.tag = 1;

            [av show];

        }

//alertViewDelegate

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{

    //NSLog(@"clickedButtonAtIndex %d",buttonIndex);

    if(alertView.tag == 1){

        if(buttonIndex == 1){

            NSLog(@"appStoreLinkURL %@",appStoreLinkURL);

            NSString *appURL = appStoreLinkURL;

            [[UIApplication sharedApplication] openURL:[NSURL URLWithString:appURL]];

        }

    }else if(alertView.tag == 2){

        exit(1);

    }

}