單擊按鈕時刪除UITableview中的選定行

Question

使用removeObjectAtIndex出現異常。
我已經在該論壇中搜索過，但沒有找到針對此Exception的正確解決方案。 實際上，當我單擊按鈕時，我正在從服務器獲取數據，獲得了成功，並且還需要刪除該行，但是所選行並未刪除。

我的例外：-由於未捕獲的異常'NSInternalInconsistencyException'而終止應用程序，原因：'-[ NSCFArray removeObjectAtIndex：]：將變異方法發送到不可變對象'***首先拋出調用堆棧：（0 CoreFoundation 0x000000010cfd1c65 __exceptionPreprocess + 165 1 libobjc.A .dylib 0x000000010c46bbb7 objc_exception_throw + 45 2 CoreFoundation 0x000000010cfd1b9d + [NSException引發：格式：] + 205 3 CoreFoundation 0x000000010cfca70e-[__ NSCFArray removeObjectAtIndex：] + 94 4 SkigitApplication 0x00000001097fab80 __20- [HomePage確認：] _ 20_AF [塊-申請書]：0-0 setCompletionBlockWithSuccess：失敗：] _ block_invoke46 + 40 6 libdispatch.dylib 0x000000011160f186 _dispatch_call_block_and_release + 12 7 libdispatch.dylib 0x000000011162e614 _dispatch_client_callout + 8 8 libdispatch.dylib 0x0000000111616a1c _dispatch_main_queue_callback_4CF + 1664 9的CoreFoundation 0x000000010cf391f9 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_ 隊列 + 9 10 CoreFoundation 0x000000010cefadcb __CFRunLoopRun + 2043 11 CoreFoundation 0x000000010cefa366 CFRunLoopRunSpecific + 470 12 GraphicsServices 0x000000010db6da3e GSEventRunModal + 161 13 UIKit 0x000000010acf7900 UIApplicationMain + 1282 14 SkigitApplication 0x00000001dy dy ++ dyb 16lib 0x00000001dy dy ++ lib 0 0x0000000000000001 0x0 +1）libc ++ abi.dylib：以類型為NSException的未捕獲異常終止

這是我的代碼：request是我的數組

In .h
NSMutableArray *request;

In .m


-(void)Confirm:(id)sender

{
NSString *test = [NSString stringWithFormat:@"WebserviceUrl"];

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];




[manager GET:test parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject)
 {

    NSLog(@"JSON: %@", responseObject);
    if([[responseObject valueForKey:@"Success"]integerValue])
    {

        request=[[responseObject valueForKey:@"info"]mutableCopy];
        NSLog(@"array=%@",request);
        frndcount=[[[request valueForKey:@"is_new"]objectAtIndex:0]mutableCopy];
        NSLog(@"frndcount=%@",frndcount);
        notification_id= [[[request valueForKey:@"notification_id"]objectAtIndex:0]mutableCopy];
        NSLog(@"notification_id=%@",notification_id);
        item_id= [[[request valueForKey:@"item_id"]objectAtIndex:0]mutableCopy];;
        NSLog(@"item_id=%@",item_id);
        frnd_count.text=[NSString stringWithFormat:@"%@",frndcount];

        if (deleteIndexPath==0) {
           [request removeObjectAtIndex:deleteIndexPath.row];
            [self.msg_table deleteRowsAtIndexPaths:[NSArray arrayWithObject:deleteIndexPath] withRowAnimation:UITableViewRowAnimationFade];


        }



    }
}
     failure:^(AFHTTPRequestOperation *operation, NSError *error)
{
         NSLog(@"Error: %@", error);
     }];
}

Answer 1

您的request對象是一個不可變的NSArray對象。 您應該將其更改為NSMutableArray並解決問題。

更新資料

我不知道您如何初始化該對象，但是如果您正在執行以下操作：

NSMutableArray *request = someData;

引用對象可能是不可變的，因此您應該這樣做：

NSMutableArray *request = [someData mutableCopy];

現在，您有了可變數據。