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我使用的是「著名的」 :)功能createEditableCopyOfDatabaseIfNeeded僅供如果沒有數據庫的副本,在iPhone應用程序創建我的數據庫的可編輯副本。該功能複製的文件目錄中的原始數據庫..很簡單.. 但現在我陷入困境,因爲我不知道爲什麼,但與SDK 3.2.3在iOS 4.1中的功能copy my db .... EMPTY !!!createEditableCopyOfDatabaseIfNeeded創建數據庫的空副本!
下面是代碼:
- (void)createEditableCopyOfDatabaseIfNeeded
{
// First, test for existence.
BOOL success;
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *writableDBPath = [documentsDirectory stringByAppendingPathComponent:@"funghi.sql"];
success = [fileManager fileExistsAtPath:writableDBPath];
if (success) return;
// The writable database does not exist, so copy the default to the appropriate location.
NSString *defaultDBPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"funghi.sql"];
success = [fileManager copyItemAtPath:defaultDBPath toPath:writableDBPath error:&error];
if (!success) {
NSAssert1(0, @"Failed to create writable database file with message '%@'.", [error localizedDescription]);
}
}
的db是完全正確!我可以用firefox的sqlite插件讀取原始數據庫! 有什麼幫助嗎?
Thx很多!!!
或者直接從手機中刪除整個應用程序。 – 2012-01-14 14:16:36