Question

我有一个NSMutableArray NSDictionary我希望在iOS中存储在sqlite中。我试过了：

in .h

@property (nonatomic,retain) NSMutableArray *mutArrayOfDict;

在sqlite上插入：

NSData *wrtData = [NSKeyedArchiver archivedDataWithRootObject:mutArrayOfDict];
sqlite3_bind_blob(statement, 5, wrtData, -1, SQLITE_TRANSIENT);

在sqlite上阅读：

blob = sqlite3_column_blob(statement, 5);
bytes = sqlite3_column_bytes(statement, 5);
readData = [NSData dataWithBytes:blob length:bytes];

mutArrayOfDict = [NSKeyedUnarchiver unarchiveObjectWithData:readData]; //Exception

异常

[NSKeyedUnarchiver initForReadingWithData:]: incomprehensible archive....

我试过了：

[NSPropertyListSerialization propertyListFromData:readData
                                 mutabilityOption:NSPropertyListImmutable
                                           format:NULL
                                 errorDescription:nil];

这会在mutArrayOfDict的0索引处插入一个null。请帮忙!!

Answer 1

soo如果我说得对，你想从nsmutablearray填充一个sqlite表，为什么不这样做呢？

How to add nsmutable array into sqlite database table

for (int i = 0; i < [mutArray count]; i++)
    {
       NSString *string = [mutArray objectAtIndex:i];
       // insert query
       insert into table_name ('string') values(column_name);
    }

// iUser

在ios中保存并检索sqlite中的NSMutableArray

1 个答案: