Question

尝试了8个小时，不太确定哪个部分出了问题。我知道是ID问题，因为我尝试了最后一条记录。它应该是ID 5，但NSlog显示6。我删除了所有唯一ID，因此不是保留密钥问题。

感谢您的光临。

请帮忙，我发疯了........

- (id) initWithPrimaryKey:(NSInteger)pk
{   
    self = [super init];

    ID = pk;
    isDetailViewHydrated = NO;

    return self;

}

- (void)saveAllData
{
    if(isDirty) {

        if(updateStmt == nil) {

            const char *sql = "UPDATE identifyF SET TypeName = ?, gDate = ?, Location = ?, GeoCode = ?,Note = ?, Image = ?, TypeID = ? WHERE ID = ?";

            if(sqlite3_prepare_v2(database, sql, -1, &updateStmt, NULL) != SQLITE_OK)
                NSAssert1(0, @"Error while creating update statement. '%s'", sqlite3_errmsg(database));
        }
        sqlite3_bind_text(addStmt, 1, [TypeName UTF8String], -1, SQLITE_TRANSIENT);
        sqlite3_bind_text(updateStmt, 2, [DateStr UTF8String], -1, SQLITE_TRANSIENT);
        sqlite3_bind_text(updateStmt, 3, [Location UTF8String], -1, SQLITE_TRANSIENT);
        sqlite3_bind_text(updateStmt, 4, [GeoCode UTF8String], -1, SQLITE_TRANSIENT);
        sqlite3_bind_text(updateStmt, 5, [Note UTF8String], -1, SQLITE_TRANSIENT);

        //image
        NSData *imgData = UIImagePNGRepresentation(self.Image);
        int returnValue = -1;
        if(self.Image != nil)
            returnValue = sqlite3_bind_blob(updateStmt, 6, [imgData bytes], [imgData length], NULL);
        else
            returnValue = sqlite3_bind_blob(updateStmt, 6, nil, -1, NULL);

        sqlite3_bind_text(updateStmt, 7, [TypeID UTF8String], -1, SQLITE_TRANSIENT);

        sqlite3_bind_int(updateStmt, 8, ID);;

        NSLog(@"frog name %@",TypeName);
        NSLog(@"frog date %@",DateStr);
        NSLog(@"location %@",Location);
        NSLog(@"Geo code %@",GeoCode);
        NSLog(@"note %@",Note);
        NSLog(@"Img %@",Image);
        NSLog(@"Type ID %@",TypeID);
        NSLog(@"Frog ID %d",ID);


        if(returnValue != SQLITE_OK)
            NSLog(@"Not OK");

        if(SQLITE_DONE != sqlite3_step(updateStmt))
            NSAssert1(0, @"Error while updating. '%s'", sqlite3_errmsg(database));

        sqlite3_reset(updateStmt);

        isDirty = NO;
    }

    isDetailViewHydrated = NO;
}









+ (void) getInitialDataToDisplay:(NSString *)dbPath
{   
    FinderAppDelegate * appDelegate = (FinderAppDelegate *)[[UIApplication sharedApplication] delegate];
    [appDelegate.idArray removeAllObjects];
    //identifyArray = [[NSMutableArray alloc] init]; 
    if (sqlite3_open([dbPath UTF8String], &database) == SQLITE_OK) {

        const char *sql = "SELECT ID,TypeID,TypeName,Date,Location,GeoCode,Note,Image FROM identify";
        sqlite3_stmt *selectstmt;
        if (sqlite3_prepare_v2(database, sql, -1, &selectstmt, NULL) == SQLITE_OK) {

            while(sqlite3_step(selectstmt) == SQLITE_ROW) 
            {
                NSInteger primaryKey = sqlite3_column_int(selectstmt, 0);
                identify *my = [[identify alloc] initWithPrimaryKey:primaryKey];
               // my.TypeID = sqlite3_column_int(selectstmt, 1);
                my.TypeID = [NSString stringWithUTF8String:(char *) sqlite3_column_text(selectstmt,1)];
                my.TypeName = [NSString stringWithUTF8String:(char *) sqlite3_column_text(selectstmt,2)];

                NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
                [formatter setDateFormat:@"yyyy-MM-dd HH:mm"];        
                NSString *dateStr = [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 3)];
                my.Date = [formatter dateFromString:dateStr];//[NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 3)];

                my.Location = [NSString stringWithUTF8String:(char *) sqlite3_column_text(selectstmt, 4)];
                my.GeoCode = [NSString stringWithUTF8String:(char *) sqlite3_column_text(selectstmt, 5)];
                my.Note = [NSString stringWithUTF8String:(char *) sqlite3_column_text(selectstmt, 6)];
                const char *raw = sqlite3_column_blob(selectstmt, 7);
                int rawLen = sqlite3_column_bytes(selectstmt, 7);
                NSData *data = [NSData dataWithBytes:raw length:rawLen];
                my.Image = [[UIImage alloc] initWithData:data];

                my.isDirty = NO;

                [appDelegate.idArray addObject:my];
            }                   
        }
    } else sqlite3_close(database); //close db to release all memory
}


*** Assertion failure in -[identify saveAllData], /Users/Desmond/Desktop/Finder desmond new design 2/Finder/identify.m:241
Current language:  auto; currently objective-c

Catchpoint 2 (exception thrown).objc[58781]: EXCEPTIONS: throwing 0x130db720 (object 0x1418bab0, a NSException)
objc[58781]: EXCEPTIONS: searching through frame [ip=0x1cb3db3 sp=0xbffff4c0] for exception 0x130db700
objc[58781]: EXCEPTIONS: unwinding through frame [ip=0x1cb3db3 sp=0xbffff4c0] for exception 0x130db700
objc[58781]: EXCEPTIONS: handling exception 0x130db700 at 0x1cb3e46
objc[58781]: EXCEPTIONS: rethrowing current exception
objc[58781]: EXCEPTIONS: searching through frame [ip=0x1cb3e0f sp=0xbffff4c0] for exception 0x130db700
objc[58781]: EXCEPTIONS: terminating
objc[58781]: EXCEPTIONS: searching through frame [ip=0x1f0ef21 sp=0xbffff450] for exception 0x130db700
objc[58781]: EXCEPTIONS: catch(id)
objc[58781]: EXCEPTIONS: unwinding through frame [ip=0x1f0ef21 sp=0xbffff450] for exception 0x130db700
objc[58781]: EXCEPTIONS: handling exception 0x130db700 at 0x1f0ef33
2012-01-15 22:58:07.006 FrogFinder[58781:15b03] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Error while updating. 'constraint failed''
*** First throw call stack:
(0x1d7d052 0x1f0ed0a 0x1d25a78 0x132c2db 0x93167 0x952c9 0x1d7eec9 0x9a65c2 0xbe1d54 0x1d7eec9 0x9a65c2 0x9a655a 0xa4bb76 0xa4c03f 0xa4b2fe 0x9cba30 0x9cbc56 0x9b2384 0x9a5aa9 0x27a1fa9 0x1d511c5 0x1cb6022 0x1cb490a 0x1cb3db4 0x1cb3ccb 0x27a0879 0x27a093e 0x9a3a9b 0x1f3a 0x1ed5)

Answer 1

sqlite3_bind_text(addStmt, 1, [TypeName UTF8String], -1, SQLITE_TRANSIENT);
sqlite3_bind_text(updateStmt, 2, [DateStr UTF8String], -1, SQLITE_TRANSIENT);
sqlite3_bind_text(updateStmt, 3, [Location UTF8String], -1, SQLITE_TRANSIENT);
sqlite3_bind_text(updateStmt, 4, [GeoCode UTF8String], -1, SQLITE_TRANSIENT);
sqlite3_bind_text(updateStmt, 5, [Note UTF8String], -1, SQLITE_TRANSIENT);

你确定第一个应该是addStmt吗？

鉴于这是唯一的位置，它在显示的代码中使用，并且在一个明确设计用于填充八个updateStmt变量的部分中，我会说它很可能是一个错字或剪切和粘贴错误。

SQLite'更新时出错。 '约束失败''

1 个答案: