Question

下面，

NSString * decryptedStr = [[NSString alloc] initWithData：decryptedData encoding：NSUTF8StringEncoding];

“decryptedStr”正在获得“decryptedData”在模拟器中一直正常工作。但是

它在iPhone设备上运行不佳。我收到错误消息 - [__ NSArrayM insertObject：atIndex：]：object不能为nil '。请帮助我。

这是我的代码

NSString *stringIndex1 = [[NSString alloc]init];
NSMutableArray *arrAthigaaramList1 = [[NSMutableArray alloc] init];
dictDecryptList=[[NSMutableDictionary alloc]init];

for(int i=0;i<[arrD_Chapter count];i++)//50 Chapter wise
    {
        stringIndex1 = [arrD_Chapter objectAtIndex:i];
        NSData  *b64DecData = [Base64 decode:stringIndex1];
        NSData *decryptedData = [[NSData alloc]init];
        decryptedData= [b64DecData AESDecryptWithPassphrase:@"mypassword"];
        NSString *decryptedStr = [[NSString alloc] initWithData:decryptedData encoding:NSUTF32StringEncoding];

        if (decryptedStr) {
            NSLog(@"Decryped Data Base 64 encoded = %@",decryptedStr);
            [arrAthigaaramList1 addObject:decryptedStr];
        } else {
            NSLog(@"ERROR decrypting!!!");
        }


    }

Answer 1

更改这些行：

    NSData *decryptedData = [[NSData alloc]init];
    decryptedData= [b64DecData AESDecryptWithPassphrase:@"mypassword"];
    NSString *decryptedStr = [[NSString alloc] initWithData:decryptedData encoding:NSUTF32StringEncoding];

到此：

    NSData *decryptedData= [b64DecData AESDecryptWithPassphrase:@"mypassword"];
    if([decryptedData length] > 0)
    {
        NSString *decryptedStr = [[NSString alloc] initWithData:decryptedData  
                                                       encoding:NSUTF32StringEncoding];
    } else {
       NSLog(@"Hmmm, why is decrypted data a zero byte object??");
    }

- [__ NSArrayM insertObject：atIndex：]：object不能为nil＆＃39;

1 个答案: