为什么我不能执行此代码? [英] Why can't I execute this code?

问题描述

NSString *event=@"max";
NSString *venue=@"tvm";
NSString *edate=@"may 6";
NSString *etime=@"10:30";
int admts=5;
NSString *ima=ticobj.iimg;
sqlite3 *database;
databaseName = @"smbhDB.sql";
sqlite3_stmt *addStatement ;
NSArray *documentPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDir = [documentPaths objectAtIndex:0];
databasePath = [documentsDir stringByAppendingPathComponent:databaseName];
if(addStatement == nil) {
    const char *sql ="insert into tickets (admittance, venue, event, date, time, imagedata) Values (?,?,?,?,?,?)";

    if(sqlite3_prepare_v2(database, sql, -1, &addStatement, NULL) != SQLITE_OK)
        NSAssert1(0, @"444 Error while creating add  statement. '%s'", sqlite3_errmsg(database));
}

sqlite3_bind_int(addStatement,1,admts);

sqlite3_bind_text(addStatement, 2, [venue UTF8String], -1, SQLITE_TRANSIENT);
sqlite3_bind_text(addStatement, 3, [event UTF8String], -1, SQLITE_TRANSIENT);
sqlite3_bind_text(addStatement, 4, [edate UTF8String], -1, SQLITE_TRANSIENT);
sqlite3_bind_text(addStatement, 5, [etime UTF8String], -1, SQLITE_TRANSIENT);
sqlite3_bind_text(addStatement, 6, [ima UTF8String], -1, SQLITE_TRANSIENT);

if(SQLITE_DONE != sqlite3_step(addStatement))
    NSAssert1(0, @"Error while inserting data. '%s'", sqlite3_errmsg(database));
if(sqlite3_prepare_v2(database, sql, -1, &Statement, NULL) == SQLITE_OK) {
sqlite3_exec(database, sql, -1, &Statement, NULL);
}

sqlite3_reset(addStatement);

为什么我不能执行此代码?

Why can't I execute this code?

推荐答案

位置

sqlite3_open([databasePath UTF8String]，& database); 吗?

您不能使用封闭的数据库.

You can't work with a closed database.

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