iOS App崩溃-无法识别的选择器发送到实例
[英]IOS App crashes - unrecognized selector sent to instance
问题描述
In tableView:cellForRowAtIndexpath method, my code is as below. 
在tableView：cellForRowAtIndexpath方法中，我的代码如下。
When I comment out the if condition enclosed in double asterisk(*), the app crashes with the exception mentioned below. 当我注释掉双星号（*）中包含的if条件时，应用程序崩溃，但以下提到的异常除外。 And if I uncomment it then it works fine. 如果我不加评论，那就可以了。 Please help as I am new to Objective-C. 由于我是Objective-C的新手，请提供帮助。
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *simpleTableIdentifier = @“MyTableCell";
cell = (MyTableCell *)[tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@“MyTableCell" owner:self options:nil];
cell = [nib objectAtIndex:0];
}
**if (invoiceList.count == indexPath.row + 1)**
{
NSMutableDictionary *currentDictionary = [invoiceList objectAtIndex:indexPath.row];
cell.invoiceDetails = currentDictionary;
for ( NSString *key in [cell.invoiceDetails allKeys]) {
NSString *value = [cell.invoiceDetails valueForKey:key];
if([key isEqualToString:MERCHANT_NAME]){
cell.merchantNameValue.text = (value == (id)[NSNull null]) ? @"" : value;
}
if([key isEqualToString:INVOICE_ID]){
cell.invoiceIdValue.text = (value == (id)[NSNull null]) ? @"" : value;
}
if([key isEqualToString:TOTAL_AMOUNT]){
cell.totalAmountValue.text = (value == (id)[NSNull null]) ? @"" : value;
}
}
}
return cell;
}
Exception thrown is: 引发的异常是：
-[__NSDictionaryM objectAtIndex:]: unrecognized selector sent to instance 0x7fc2a604e9f0
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSDictionaryM objectAtIndex:]: unrecognized selector sent to instance 0x7fc2a604e9f0'
*** First throw call stack:
(
0 CoreFoundation 0x000000010fbd1f35 __exceptionPreprocess + 165
1 libobjc.A.dylib 0x000000010f63ebb7 objc_exception_throw + 45
2 CoreFoundation 0x000000010fbd904d -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
3 CoreFoundation 0x000000010fb3127c ___forwarding___ + 988
4 CoreFoundation 0x000000010fb30e18 _CF_forwarding_prep_0 + 120
5 MobileWalletBanking 0x000000010cf0037f -[MyViewController tableView:cellForRowAtIndexPath:] + 479
6 UIKit 0x000000010dd9b4b3 -[UITableView _createPreparedCellForGlobalRow:withIndexPath:willDisplay:] + 508
7 UIKit 0x000000010dd7afb1 -[UITableView _updateVisibleCellsNow:isRecursive:] + 2846
8 UIKit 0x000000010dd90e3c -[UITableView layoutSubviews] + 213
9 UIKit 0x000000010dd1d973 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 521
10 QuartzCore 0x000000010d2bade8 -[CALayer layoutSublayers] + 150
...
)
EDIT: NSLog of invoiceList: 编辑：发票清单的NSLog：
{
501 = 72;
610 = Merchant1;
611 = Merchant1;
612 = 51573;
615 = 51573;
616 = "07/08/2015 00:00:00";
617 = "64.01";
618 = 498;
619 = 498;
662 = (
{
501 = 72;
520 = "15.18";
615 = 51573;
616 = "07/08/2015 00:00:00";
620 = 43;
621 = "15.18";
623 = True;
624 = 43;
740 = “Text1";
},
{
501 = 72;
520 = 0;
615 = 51573;
616 = "07/08/2015 00:00:00";
620 = 10;
621 = 0;
623 = True;
624 = 10;
740 = “Text2";
},
{
501 = 72;
520 = "37.63";
615 = 51573;
616 = "07/08/2015 00:00:00";
620 = 2;
621 = "37.63";
623 = True;
624 = 2;
740 = “Text3";
},
{
501 = 72;
520 = "11.20";
615 = 51573;
616 = "07/08/2015 00:00:00";
620 = 3;
621 = "11.20";
623 = True;
624 = 3;
740 = “Text4";
},
{
501 = 72;
520 = 0;
615 = 51573;
616 = "07/08/2015 00:00:00";
620 = 14;
621 = 0;
623 = True;
624 = 14;
740 = “Text5";
}
);
663 = (
(
{
Key = 501;
Value = 83;
},
{
Key = Name;
Value = "INVOICE_CONNECTION_PROPERTIES";
},
{
Key = 611;
Value = Merchant1;
},
{
Key = 610;
Value = "";
},
{
Key = 615;
Value = 51573;
},
{
Key = 620;
Value = 1;
},
{
Key = "SERVICE_NAME";
Value = “Text1";
},
{
Key = "FIELD_1";
Value = 4272035;
},
{
Key = "FIELD_1_CONNECTION_FIELD_ID";
Value = 000000000000481;
},
{
Key = "FIELD_1_QS_NAME";
Value = "Id";
},
{
Key = "FIELD_1_QS_VALUE";
Value = "Id";
},
{
Key = "FIELD_2";
Value = 10;
},
{
Key = "FIELD_2_CONNECTION_FIELD_ID";
Value = 000000000000482;
},
{
Key = "FIELD_2_QS_NAME";
Value = "index1";
},
{
Key = "FIELD_2_QS_VALUE";
Value = "index1";
},
{
Key = "FIELD_3";
Value = "";
},
{
Key = "FIELD_3_IS_MODIFIED";
Value = 1;
},
{
Key = "FIELD_3_CONNECTION_FIELD_ID";
Value = 000000000000483;
},
{
Key = "FIELD_3_QS_NAME";
Value = "index2";
},
{
Key = "FIELD_3_QS_VALUE";
Value = "index2";
},
{
Key = "FIELD_4";
Value = R;
},
{
Key = "FIELD_4_CONNECTION_FIELD_ID";
Value = 000000000000488;
},
{
Key = "FIELD_4_QS_NAME";
Value = "index_Type";
},
{
Key = "FIELD_4_QS_VALUE";
Value = "Index_Type";
}
),
(
{
Key = 501;
Value = 83;
},
{
Key = Name;
Value = "INVOICE_CONNECTION_PROPERTIES";
},
{
Key = 611;
Value = Merchant1;
},
{
Key = 610;
Value = "";
},
{
Key = 615;
Value = 51573;
},
{
Key = 620;
Value = 2;
},
{
Key = "SERVICE_NAME";
Value = “Text2";
},
{
Key = "FIELD_1";
Value = 4272033;
},
{
Key = "FIELD_1_CONNECTION_FIELD_ID";
Value = 000000000000481;
},
{
Key = "FIELD_1_QS_NAME";
Value = "Id";
},
{
Key = "FIELD_1_QS_VALUE";
Value = "Id";
},
{
Key = "FIELD_2";
Value = 3;
},
{
Key = "FIELD_2_CONNECTION_FIELD_ID";
Value = 000000000000482;
},
{
Key = "FIELD_2_QS_NAME";
Value = "index1";
},
{
Key = "FIELD_2_QS_VALUE";
Value = "index1";
},
{
Key = "FIELD_3";
Value = "";
},
{
Key = "FIELD_3_IS_MODIFIED";
Value = 1;
},
{
Key = "FIELD_3_CONNECTION_FIELD_ID";
Value = 000000000000483;
},
{
Key = "FIELD_3_QS_NAME";
Value = "index2";
},
{
Key = "FIELD_3_QS_VALUE";
Value = "index2";
},
{
Key = "FIELD_4";
Value = C;
},
{
Key = "FIELD_4_CONNECTION_FIELD_ID";
Value = 000000000000488;
},
{
Key = "FIELD_4_QS_NAME";
Value = "index_type";
},
{
Key = "FIELD_4_QS_VALUE";
Value = "index_type";
}
)
);
664 = (
(
{
Key = 501;
Value = 73;
},
{
Key = 625;
Value = 000000000000481;
},
{
Key = 611;
Value = Merchant1;
},
{
Key = 626;
Value = "id";
},
{
Key = 627;
Value = 1;
},
{
Key = 590;
Value = True;
}
),
(
{
Key = 501;
Value = 73;
},
{
Key = 625;
Value = 000000000000482;
},
{
Key = 611;
Value = Merchant1;
},
{
Key = 626;
Value = "index1";
},
{
Key = 627;
Value = 2;
},
{
Key = 590;
Value = True;
}
),
(
{
Key = 501;
Value = 73;
},
{
Key = 625;
Value = 000000000000483;
},
{
Key = 611;
Value = Merchant1;
},
{
Key = 626;
Value = "index2";
},
{
Key = 627;
Value = 3;
},
{
Key = 590;
Value = True;
}
),
(
{
Key = 501;
Value = 73;
},
{
Key = 625;
Value = 000000000000488;
},
{
Key = 611;
Value = Merchant1;
},
{
Key = 626;
Value = "index_type";
},
{
Key = 627;
Value = 4;
},
{
Key = 590;
Value = True;
}
)
);
}
1 个解决方案
解决方案1
0 2015-11-12 12:06:54
You are checking if (invoiceList.count == indexPath.row + 1) but instead of it, use if (invoiceList.count> indexPath.row ). 您正在检查是否（invoiceList.count == indexPath.row +1），但要使用if（invoiceList.count> indexPath.row）。 Please also check "numberOfRowsInIndexpath" is returning as invoiceList.count. 另请检查“ numberOfRowsInIndexpath”是否作为invoiceList.count返回。
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.
相关问题
由于-[UIView _setLayerConfig：]，iOS应用程序崩溃：无法识别的选择器发送到实例 - iOS App crashes because of -[UIView _setLayerConfig:]: unrecognized selector sent to instance
应用程序崩溃，错误无法识别的选择器发送到实例 - App crashes with error unrecognized selector sent to instance
Titanium IOS应用程序-无法识别的选择器已发送到实例 - Titanium IOS app - unrecognized selector sent to instance
iOS 8可以运行，但iOS 7会因-[NSNull长度]而崩溃：无法识别的选择器已发送到实例 - iOS 8 works but iOS 7 crashes with -[NSNull length]: unrecognized selector sent to instance
iOS-ZBarSDK-应用程序崩溃，出现-[UILabel length]：无法识别的选择器发送到实例 - IOS - ZBarSDK - application crashes with -[UILabel length]: unrecognized selector sent to instance
iOS-应用在“发行版”中崩溃，但不在“调试”模式下崩溃。 [__NFCString count]：无法识别的选择器已发送到实例xxx - iOS - App crashes in Release but not in Debug mode. [__NFCString count]: unrecognized selector sent to instance xxx
使用iAd时，方向更改会导致iOS 7上的应用程序崩溃（无法识别的选择器发送到实例） - Orientation change crashes app on iOS 7 when using iAd (unrecognized selector sent to instance)
iPhone应用程序仅在iOS10上崩溃，且无法识别的选择器已发送至实例 - iPhone app crashes only on iOS10 with unrecognized selector sent to instance
Swift 应用程序因 CLLocationManager 上的“无法识别的选择器发送到实例”而崩溃 - Swift app crashes with `unrecognized selector sent to instance` on CLLocationManager
应用程序崩溃并出现错误 [__NSCFDictionary objectAtIndex:]：无法识别的选择器发送到实例 - App crashes with error [__NSCFDictionary objectAtIndex:]: unrecognized selector sent to instance
相关标签