我已按照这个答案将数据写入plist
How to write data to the plist?
但到目前为止,我的plist根本没有变化.
这是我的代码： –
- (IBAction)save:(id)sender
{
NSString *path = [[NSBundle mainBundle] pathForResource:@"drinks" ofType:@"plist"];
NSString *drinkName = self.name.text;
NSString *drinkIngredients = self.ingredients.text;
NSString *drinkDirection = self.directions.text;
NSArray *values = [[NSArray alloc] initWithObjects:drinkDirection,drinkIngredients,drinkName,nil];
NSArray *keys = [[NSArray alloc] initWithObjects:DIRECTIONS_KEY,INGREDIENTS_KEY,NAME_KEY,nil];
NSDictionary *dict = [[NSDictionary alloc] initWithObjects:values forKeys:keys];
[self.drinkArray addObject:dict];
NSLog(@"%@",self.drinkArray);
[self.drinkArray writeToFile:path atomically:YES];
}
我需要执行额外的操作吗？
我是iPhone SDK的新手,所以任何帮助将不胜感激.
解决方法
您正在尝试将文件写入应用程序包,这是不可能的.而是将文件保存到Documents文件夹.
NSString *path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES) lastObject]; path = [path stringByAppendingPathComponent:@"drinks.plist"];
pathForResource方法只能用于读取您在Xcode中添加到项目中的资源.
以下是您在应用中修改plist时通常执行的操作：
1.首次启动时,将drinks.plist从应用程序包复制到应用程序的Documents文件夹(使用NSFileManager).
2.读/写时仅使用Documents文件夹中的文件.
UPDATE
NSString *destPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,YES) lastObject];
destPath = [destPath stringByAppendingPathComponent:@"drinks.plist"];
// If the file doesn't exist in the Documents Folder,copy it.
NSFileManager *fileManager = [NSFileManager defaultManager];
if (![fileManager fileExistsAtPath:destPath]) {
NSString *sourcePath = [[NSBundle mainBundle] pathForResource:@"drinks" ofType:@"plist"];
[fileManager copyItemAtPath:sourcePath toPath:destPath error:nil];
}
// Load the Property List.
drinkArray = [[NSArray alloc] initWithContentsOfFile:destPath];
