我需要在NSUserDefaults中预填充并保存数组,以便下游方法可以读取和写入存储在那里的十个值。我已经构建了这个可行的解决方案,但有没有更好的方法来做到这一点?使用零值预填充NSUserDefaults数组
任何见识都被赞赏! LQ
NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
NSMutableArray *myArray = [[NSMutableArray alloc] init];
// Set the array with ten Zero Value placeholders
for (NSUInteger i = 0; i < 10; ++i) {
[myArray addObject:[NSNumber numberWithInt:0]];
}
[userDefaults setObject:myArray forKey:@"someKeyName"];
[myArray release];
后来的方法调用这个数组是这样的:
- (void)doSomethingUseful {
NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
NSMutableArray *someUsefulArray = [[NSMutableArray alloc] initWithArray:[userDefaults objectForKey:@"someKeyName"]];
// read some values, write some values: int someInt = [someUsefulArray objectAtIndex:3]; // etc.
// store array values back to NSUserDefaults . . .
// IS THERE A WAY TO READ AND WRITE DIRECTLY TO INDEX 3 of the NSUserDefaults array instead???
[someUsefulArray release]
}
是的,它根本不感觉优雅。 – 2011-04-06 21:46:30