iPhone FMDB找不到表

Question

- init
{
    if(![super init]) return nil;

    //the database is stored in the application bundle.
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];

    NSString *path = [documentsDirectory stringByAppendingFormat:@"/base.sqlite"];
    NSLog(@"%@",path);
    db = [FMDatabase databaseWithPath:path];
    [db setLogsErrors:YES];

    if (![db open]) { 
        NSLog(@"Could not open db."); 
        return 0; 
    } else { 
        NSLog(@"DB Open...."); 
    } 

    FMResultSet *rs = [db executeQuery:@"SELECT * FROM settings"]; 

    return self; 
}

這就是我用來嘗試從設置訪問數據的代碼。 但這給出了一個錯誤（我可以向您保證有一個設置表！）

這是碼頭的轉儲

BEGIN TRANSACTION;
CREATE TABLE About (id integer PRIMARY KEY AUTOINCREMENT,key varchar UNIQUE,value text);
DELETE FROM sqlite_sequence;
CREATE TABLE settings (version integer,updated timestamp,owner varchar);
INSERT INTO "settings" VALUES(1,'2009-05-11 14:29:07','boulevart');
COMMIT;

和錯誤：

2009-05-11 16:14:19.799 SummerGuide[9892:20b] /Users/andyjacobs/Library/Application Support/iPhone Simulator/User/Applications/762630F5-78CB-41A4-85C2-964316ACFE1D/Documents/base.sqlite
2009-05-11 16:14:19.801 SummerGuide[9892:20b] DB Open....
2009-05-11 16:14:19.804 SummerGuide[9892:20b] DB Error: 1 "no such table: settings"
2009-05-11 16:14:19.804 SummerGuide[9892:20b] DB Query: SELECT * FROM settings

奇怪的是，如果我將路徑更改為例如/baseeeeee.sqlite（不是文件），它仍然顯示“ DB Open ....”。

我只是將現有的sqlite文件（base.sqlite）添加到了我的追索文件夾，並將sqlite3 lib添加到了我的框架。

Answer 1

要獲取應用包中文件的路徑，請使用以下命令：

[[NSBundle mainBundle] pathForResource:@"base" ofType:@"sqlite"];

要實際打開數據庫，您可能必須首先將其復制到Documents目錄，因為嘗試修改應用程序捆綁包中的文件是一個壞消息。