我正在使用 UITableView。如果没有网络连接,viewDidload 会抛出异常。我的 viewDidLoad 函数是:
@try {
NSLog(@"Request URL = %@",URLString);
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL
URLWithString:URLString]];
NSData *response = [NSURLConnection sendSynchronousRequest:request
returningResponse:nil error:nil];
NSError *jsonParsingError = nil;
NSDictionary *tableData = [NSJSONSerialization JSONObjectWithData:response
options:0
error:&jsonParsingError];
// Grab whole data with data field in JSON
// responseArray = [tableData objectForKey:@"data"];
responseArray = [[NSMutableArray alloc]initWithArray:[tableData objectForKey:@"data"]];
for(int i = 0; i < responseArray.count; i++)
{
NSArray * tempArray = responseArray[i];
responseArray[i] = [tempArray mutableCopy];
}
UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
[btn setFrame:CGRectMake(280.0, 0.0, 40.0, 40.0)];
[btn setImage:[UIImage imageNamed:@"sort_icon.png"] forState:UIControlStateNormal];
[btn addTarget:self action:@selector(showActionSheet) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *barbutton = [[UIBarButtonItem alloc]initWithCustomView:btn];
self.navigationItem.rightBarButtonItem = barbutton;
}
@catch (NSException *exception)
{
exceptionOccured = YES;
NSLog(@"Exception Ocurred");
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error" message:@"Error in connectivity" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
[alert show];
}
在 cellForRowAtIndexPath 我这样做:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
@try {
NSMutableDictionary *tempDict = [[NSMutableDictionary alloc] init];
tempDict = [responseArray objectAtIndex:indexPath.row];
return cell;
}
@catch (NSException *exception)
{
NSLog(@"Error in CEll Create");
NSLog(@"Draw Alert");
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error" message:@"Error in connectivity" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
[alert show];
}
}
在 AlertViewDelegate 函数中我正在做
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
[self.navigationController popViewControllerAnimated:YES];
}
现在的问题是,每当出现异常并重新抛出异常并显示错误时,它都不会显示警报
Thread 1: EXC_BAD_ACCESS(code=2, address=0x2)
任何帮助将不胜感激...