Question

经过大量搜索，我找到了各种解决方案，但在我的情况下没有任何作用。我在NSDictionary中绑定数据时遇到此错误。崩溃日志是：

    Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '+[NSDictionary dictionaryWithObjectsAndKeys:]: second object of each pair must be non-nil.  Or, did you forget to nil-terminate your parameter list?'
*** First throw call stack:

代码：

 while(sqlite3_step(select_statement) == SQLITE_ROW)

    {

//            const char* recipeID = (const char*)sqlite3_column_text(select_statement, 1);
//            const char* recipename = (const char*)sqlite3_column_text(select_statement, 0);
//            const char* recipepicname = (const char*)sqlite3_column_text(select_statement, 3);
//            const char* chapterid = (const char*)sqlite3_column_text(select_statement, 4);
//            const char* recipedesc = (const char*)sqlite3_column_text(select_statement, 2);
//            
//            
//             srtRecipestepId = recipeID == NULL ? nil : [[NSString alloc]initWithUTF8String:recipeID];
//             strRecipeName = recipename == NULL ? nil : [[NSString alloc]initWithUTF8String:recipename];
//             NSString *recipePicName = recipepicname == NULL ? nil : [[NSString alloc]initWithUTF8String:recipepicname];
//             strRecipeIntro = recipedesc == NULL ? nil : [[NSString alloc]initWithUTF8String:recipedesc];
//             NSString *strchapterId = chapterid == NULL ? nil : [[NSString alloc]initWithUTF8String:chapterid];

            srtRecipestepId=[NSString stringWithUTF8String:(char *)sqlite3_column_text(select_statement, 1)];
            strRecipeName=[NSString stringWithUTF8String:(char *)sqlite3_column_text(select_statement, 0)];
           // RecipestepPics = [[NSData alloc] initWithBytes:sqlite3_column_blob(select_statement, 3) length:sqlite3_column_bytes(select_statement, 3)];
           NSString *recipePicName = [NSString stringWithUTF8String:(char *)sqlite3_column_text(select_statement, 3)];
            strRecipeIntro = [NSString stringWithUTF8String:(char *)sqlite3_column_text(select_statement, 2)];
            NSString *strchapterId = [NSString stringWithUTF8String:(char *)sqlite3_column_text(select_statement, 4)];

            [arrreturnRecipefinder addObject:[NSDictionary dictionaryWithObjectsAndKeys:srtRecipestepId,@"RecipestepId",strRecipeName,@"RecipeName",recipePicName,@"RecipestepPics",strRecipeIntro,@"RecipeIntro",strchapterId,@"RecipeChapterId"]];


        }

Answer 1

从错误消息：

...或者，您是否忘记了终止参数列表？

是的，你做到了！它应该是

[NSDictionary dictionaryWithObjectsAndKeys:srtRecipestepId, @"RecipestepId",
                    strRecipeName, @"RecipeName",
                    recipePicName, @"RecipestepPics",
                   strRecipeIntro, @"RecipeIntro",
                     strchapterId, @"RecipeChapterId",
                     nil]   // <-- nil-termination of variable argument list

Answer 2

您没有将nil参数添加到词典结尾。因为nil用作标记“参数结束”列表的“标记”。

 [arrreturnRecipefinder addObject:[NSDictionary dictionaryWithObjectsAndKeys:srtRecipestepId,@"RecipestepId",strRecipeName,@"RecipeName",recipePicName,@"RecipestepPics",strRecipeIntro,@"RecipeIntro",strchapterId,@"RecipeChapterId", nil]];

NSDictionary：第二个对象必须是非零的

2 个答案: