iphone - 无法在 plist 文件中写入 bool 值

Question

我正在尝试将 bool 值写入plist文件，但我真的不知道我哪里做错了。我什至没有收到任何异常/错误，但相关文件中的值保持不变。此外，文件路径也正确，myDict 的分配显示已经从文件中读取了值。

下面是我写的代码

-(void)SetSettings:(BOOL)SoundOn: (BOOL)GlowOn
{
    NSString *pathSettingFile = [[NSString alloc]initWithString:[[NSBundle mainBundle]pathForResource:@"AppSettings" ofType:@"plist"]];

    NSMutableDictionary *myDict = [NSMutableDictionary dictionaryWithContentsOfFile:pathSettingFile];

    [myDict setObject:[NSNumber numberWithBool:SoundOn] forKey:@"isSoundOn"];
    [myDict setObject:[NSNumber numberWithBool:GlowOn] forKey:@"isGlowOn"];
    [myDict writeToFile:pathSettingFile atomically:NO];

    [myDict release];
    [pathSettingFile release];
}

Answer 1

您无法写入主包。您只能从主包中读取。如果您想编写文件，则需要将其放入应用程序的文档目录中。

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *path = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.plist",plistName]]; 

编辑:

如果您需要主包中的 plist，可以先将其复制到文档目录中，然后进行修改。

    NSError *error;
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *path = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.plist",plistName]]; 

    NSFileManager *fileManager = [NSFileManager defaultManager];

    if (![fileManager fileExistsAtPath: path]){
        NSLog(@"File don't exists at path %@", path);

        NSString *plistPathBundle = [[NSBundle mainBundle] pathForResource:plistName ofType:@"plist"];

        [fileManager copyItemAtPath:plistPathBundle toPath: path error:&error]; 
    }else{
        NSLog(@"File exists at path:%@", path);
    }