在函数中有一个UIAlert:
- (void)loadJSON
{
Reachability *networkReachability = [Reachability reachabilityForInternetConnection];
NetworkStatus networkStatus = [networkReachability currentReachabilityStatus];
if (networkStatus == NotReachable) {
dispatch_async(dispatch_get_main_queue(), ^{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle: @"Announcement" message: @"No Connection" delegate: nil cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alert show]; [alert release];
});
} else {
//some code
}
}
在用户点了OK键后应该触发函数,回调loadJSON 。
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
[self loadJSON];
}
我的最终目标是如果没有网络连接,显示UIAlert,用户看见信息,点击Okay,如果还没有网络连接,显示警报。我没有连上网,警报信息只显示了一次。