因为我删除了json数据。每当我删除json数据时,我必须删除tableview中的特定数据。此外,无论何时我试图删除第一行中的数据,它将引发异常,如“终止应用程序,由于未捕获的异常'NSInternalInconsistencyException',原因:'尝试删除第1行从第0节,其中只包含1行更新'”和应用程序崩溃Tableview重新加载数据不工作在uitableview
任何人都可以建议我在以下编码中出现了什么问题?
- (IBAction)deletebutton:(id)sender {
NSString *userid = [[NSUserDefaults standardUserDefaults]
stringForKey:@"UserId"];
NSString *encodeddistrictvalue = [selecteddistrictvalue stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet alphanumericCharacterSet]];
NSString *encodedPanchaytvalue = [selectedpanchayatvalue stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet alphanumericCharacterSet]];
NSString *urlStr = [NSString stringWithFormat:@"my json url",encodeddistrictvalue,encodedPanchaytvalue,taxtypevariable,selctedassessmentno,userid];NSURL *url = [NSURL URLWithString:urlStr];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[NSURLConnection sendAsynchronousRequest:request
queue:[NSOperationQueue mainQueue]
completionHandler:^(NSURLResponse *response,
NSData *data, NSError *connectionError)
{
if (data.length > 0 && connectionError == nil)
{
NSDictionary *dictionaryvalue = [NSJSONSerialization JSONObjectWithData:data
options:0
error:NULL];
NSString *code = [[dictionaryvalue objectForKey:@"code"] stringValue];
NSLog(@"the response string value is %@",code);
if ([code intValue]==1) {
NSLog(@"deletd sucessfully");
UIAlertController * alert = [UIAlertController
alertControllerWithTitle:@"Alert"
message:@"Are u sure u want to delete the table data"
preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction* yesButton = [UIAlertAction
actionWithTitle:@"yes"
style:UIAlertActionStyleDefault
handler:^(UIAlertAction * action) {
{
[assessmentnumber removeObject:selctedassessmentno ];
[self.tableview registerClass:[UITableViewCell class] forCellReuseIdentifier:@"expandingCell"];
[_tableview reloadData];
}
}];
[alert addAction:yesButton];
[self presentViewController:alert animated:YES completion:nil];
alert.view.tintColor = [UIColor blackColor];
}
}
} ];
}
太多的代码。请将您的问题编辑为可理解的数量。 – brimstone
由于不便,先生.i编辑我的问题请检查 – user19
不要重新加载整个表格视图。使用'deleteRowsAtIndexPaths'。如果您使用的是故事板和原型单元,则根本不需要注册单元。 – vadian