iOS设备上的.plist路径

Question

-(void)login{
    NSBundle *bundle = [NSBundle mainBundle];
    NSString *path = [bundle pathForResource:@"login" ofType:@"plist"];

    NSMutableDictionary* plistDict = [[NSMutableDictionary alloc] initWithContentsOfFile:path];

    [plistDict setObject:@"si" forKey:@"stato"];

    [plistDict writeToFile:path atomically: YES];
}

在iOS模拟器中,plist已经正确编写,但是当我尝试在我的iPhone上编写.plist时,它不起作用.我想这是因为错误的.plist路径.iOS设备使用不同的路径吗？

Answer 1

首先,您必须检查文件是否退出文档目录.如果它没有退出,那么您可以将其复制到文档目录.你可以这样做

-(void)login{
    BOOL doesExist;
    NSError *error;
    NSString *filePath= [[NSBundle mainBundle] pathForResource:@"login" ofType:@"plist"];
    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString * path =[[NSString alloc] initWithString:[documentsDirectory stringByAppendingPathComponent:@"login.plist"]];

    doesExist= [fileManager fileExistsAtPath:path];
    if (doesExist) {
        NSMutableDictionary* plistDict=[[NSMutableDictionary alloc] initWithContentsOfFile:path];                
    }
    else
    {    

        doesExist= [fileManager copyItemAtPath:filePath  toPath:path error:&error];
        NSMutableDictionary* plistDict=[[NSMutableDictionary alloc] initWithContentsOfFile:filePath];        
    }  

    [plistDict setObject:@"si" forKey:@"stato"];

    [plistDict writeToFile:path atomically: YES];
}