因未捕获的异常'NSInvalidArgumentException'而终止应用程序，原因：NSArrayM objectForKey

Question

由于未捕获的异常'NSInvalidArgumentException'而终止应用程序，原因：' - [__ NSArrayM objectForKey：]：无法识别的选择器发送到实例0x12e654c0。

我从具有两个字典对象的Array上加载tableview上的数据。当ViewDidLoad调用代码时，Dictionary对象包含2个nsstring对象

while (sqlite3_step(statement) == SQLITE_ROW) {
    NSString* delID = [NSString stringWithUTF8String:(const char *) sqlite3_column_text(statement, 0)];
    NSString* name =[NSString stringWithUTF8String:(const char *) sqlite3_column_text(statement, 1)]; 


    NSMutableDictionary *dict=[NSMutableDictionary dictionary];
    [dict setObject:delID forKey:@"delID"];
    [dict setObject:name forKey:@"name"];
    [self.arr addObject:dict];

第一行永远不会崩溃但第二行不会崩溃indexPath.row == 1它总是崩溃请看下面的屏幕截图。谢谢你的帮助

这是我再次填写self.arr      - （void）popoverControllerDidDismissPopover：（UIPopoverController *）popoverController     {     if（[datePicker1.CurrentDate length]）{

UIButton *btn=(UIButton*)[self.view viewWithTag:btnTag];
[btn setTitle:datePicker1.CurrentDate forState:UIControlStateNormal];
}

if ([self.searchDel.arrSelectDelAdd count ]) 
{
    [self.arr addObject:self.searchDel.arrSelectDelAdd];



    [self.tblDelivery reloadData];

}

}

Answer 1

从代码中删除if条件。因为它只是将第一个字典添加到数组而不是第二个。

//if (i==0){
        [self.arr addObject:dict];
//}

试试这个：）

Answer 2

很抱歉打扰你们所有人实际上问题是我正在添加第二个或另一个像

这样的对象

[self.arr addObject:self.searchDel.arrSelectDelAdd]; //Incorrect, that is adding NSArray type not dictionary

然后获取cellForRowAtIndexPath

中的值

NSDictionary *dict=[arr objectAtIndex:indexPath.row];//here dict will contain NSSArray type not dict type object its causing to crash app.

cell.lblID.text=(NSString*)[dict objectForKey:@"delID"];// at this line.
cell.lblName.text=(NSString*)[dict objectForKey:@"name"];


[self.arr addObjectsFromArray:self.searchDel.arrSelectDelAdd]; // correct, thats the solution giving contents of NSSArray and now working my code