如何用一個NSUserDefaults保存多個數字？

Question

在我的板子結束，我要救的水平，局分，併成一個總NSUserDefaults的點，再回想，打破數字退了出去。這可能嗎？試圖不要每次都有一個NSUserDefaults列表。

例子：

int level = 35 
int boardPoints = 500 
int totalPoints = 18000 

我想保存「levelValue」與所有三個，也許有一段時間分隔符？ levelValue = 35.500.18000;

// Save value 
[[NSUserDefaults standardUserDefaults] setObject:levelValue forKey:@"levelValueKey"]; 
[[NSUserDefaults standardUserDefaults] synchronize]; 

// Recall 
// Somehow recall Left(levelValueKey,2), Mid(starting from period,2), and right(up to period) 
level = [[NSUserDefaults standardUserDefaults] objectForKey:@"levelValueKey"]; 
boardPoints = [[NSUserDefaults standardUserDefaults] objectForKey:@"levelValueKey"]; 
totalPoints = [[NSUserDefaults standardUserDefaults] objectForKey:@"levelValueKey"]; 

有什麼想法？

Answer 1

保存所有你整數作爲一個NSArray在NSUserDefaults的，而不是像這樣：

//your ints 
int level = 35; 
int boardPoints = 500; 
int totalPoints = 18000; 

//put ints in array 
NSArray *levelValueArray = [NSArray arrayWithObjects:[NSNumber numberWithInt:level], [NSNumber numberWithInt:boardPoints], [NSNumber numberWithInt:totalPoints], nil] 
//save in NSUserDefaults 
[[NSUserDefaults standardUserDefaults] setObject:levelValueArray forKey:@"levelValueKey"]; 

//retreive 
NSArray *arrayLevelValues = [[NSUserDefaults standardUserDefaults] objectForKey:@"levelValueKey"]; 

使用它們：

NSLog(@"arrayLevelValues: %@", arrayLevelValues[1]); 
//the object 1 is a string so you'll need to convert it to int using intValue 
int tempPoints = [arrayLevelValues[1] intValue]; 
NSLog(@"tempPoints: %d",tempPoints);