NSDictionary writetofile不工作

Question

我正在尝试使用NSDictionary writetofile保存一些用户设置，但它不起作用。

我已经检查过类似的问题，但我找不到问题所在。

下面是我的代码：

NSDictionary *settings;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentationDirectory, NSUserDomainMask, YES);
NSString *settingsPath = [NSString stringWithFormat:@"%@/UserSettings.plist", [paths objectAtIndex:0]];
BOOL settingsExist = [[NSFileManager defaultManager] fileExistsAtPath:settingsPath];
if(settingsExist){
    NSLog(@"file found!");
    settings = [NSDictionary dictionaryWithContentsOfFile:settingsPath];
}else{
    NSLog(@"file not found!");
    settings = [[NSDictionary alloc] initWithObjectsAndKeys:@"iPhone",@"device", nil];
    [[NSFileManager defaultManager] createFileAtPath:settingsPath contents:nil attributes:nil];
    if([settings writeToFile:settingsPath atomically:YES]){
        NSLog(@"success!");
    }else{
        NSLog(@"fail!");
    }
}

它总是返回'fail!‘。你能帮我拿一下这个吗？

Answer 1

您需要指定NSDocumentDirectory而不是NSDocumentationDirectory。