xcode - 将文件从应用程序包复制到用户的应用程序支持文件夹

Question

我正在制作一个应用程序，需要将某些文件从应用程序包复制到用户的应用程序支持文件夹。这是我实际使用的代码:

NSBundle *thisBundle = [NSBundle mainBundle];
NSString *executableName = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleExecutable"];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSApplicationSupportDirectory, NSUserDomainMask, YES);
NSString *userpath = [paths objectAtIndex:0];
userpath = [userpath stringByAppendingPathComponent:executableName];    // The file will go in this directory
NSString *saveFilePath = [userpath stringByAppendingPathComponent:@"db.sqlite"];
NSFileManager *fileManager = [[NSFileManager alloc] init];
[fileManager copyItemAtPath:[thisBundle pathForResource:@"db" ofType:@"sqlite"] toPath:saveFilePath error:NULL];

但这不会复制任何内容，顺便说一句，这是一个 Mac 应用程序。

Answer 1

终于可以添加了

if ([fileManager fileExistsAtPath:userpath] == NO)
    [fileManager createDirectoryAtPath:userpath withIntermediateDirectories:YES attributes:nil error:nil];

结果代码是:

NSBundle *thisBundle = [NSBundle mainBundle];

NSString *executableName = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleExecutable"];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSApplicationSupportDirectory, NSUserDomainMask, YES);
NSString *userpath = [paths objectAtIndex:0];
userpath = [userpath stringByAppendingPathComponent:executableName];    // The file will go in this directory
NSString *saveFilePath = [userpath stringByAppendingPathComponent:@"db.sqlite"];
NSFileManager *fileManager = [[NSFileManager alloc] init];
if ([fileManager fileExistsAtPath:userpath] == NO)
    [fileManager createDirectoryAtPath:userpath withIntermediateDirectories:YES attributes:nil error:nil];

[fileManager copyItemAtPath:[thisBundle pathForResource:@"db" ofType:@"sqlite"] toPath:saveFilePath error:NULL];