将一些数据附加到plist

Question

我正在创建一个应用程序，允许您记录棋盘游戏。我将日志存储在plist中，并试图找出如何追加plist。我想我理解这个逻辑，但是我很难将它放入代码中。

我的plist看起来像这样：

现在我想是这样的，但我相信它会直接覆盖，而不是附加

//get path for root directory 
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES); 

NSLog(@"paths: %@",paths); 

//get path for documents directory 
NSString *documentsPath = [paths objectAtIndex:0]; 
NSLog(@"documentsPath: %@",documentsPath); 

//get the path for logs.plist file 
NSString *plistPath = [documentsPath stringByAppendingPathComponent:@"logs.plist"]; 


//create dictionary with values 
NSDictionary *plistDict = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:myLogTitle, name, players, myNotes, nil] forKeys:[NSArray arrayWithObjects:@"Log Title",@"Name",@"Players","Notes", nil]]; 

//write out data 
[plistDict writeToFile:plistPath atomically:YES]; 

任何帮助的plist文件会非常感激。

Answer 1

尝试像这样

NSString *path = [[NSBundle mainBundle] pathForResource: @"data" ofType: @"plist"]; 
NSDictionary *dict = [NSDictionary dictionaryWithContentsOfFile: path]; 
NSLog(@"dictbeforeAppending..%@",dict); 

//getting Previous Array..... 
NSMutableArray *prevArray = [[NSMutableArray alloc]init]; 
prevArray = [[dict valueForKey:@"Root"] valueForKey:@"Logs"]; 
NSLog(@"prevArray..%@",prevArray); 

// Add new stuff to old stuff..... 

NSMutableArray *players =[[NSMutableArray alloc]initWithObjects:@"NewPlayer1",@"Newplayer2",@"Newplayer3", nil];//1 
NSDictionary *newObject = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:@"Logtiltle2", @"Krish", players, @"it will be more fun", nil] forKeys:[NSArray arrayWithObjects:@"Log Title",@"Name",@"Players",@"Notes", nil]];//2 

NSMutableArray *newArray = [[NSMutableArray alloc]init]; 
[newArray addObject:newObject]; 
for (int i=0;i<[prevArray count];i++){ 
    [newArray addObject:[prevArray objectAtIndex:i]]; 
} 

//set all values for Plist...... 
NSMutableDictionary *allItemsDict = [[NSMutableDictionary alloc]init]; 
NSMutableArray *Logs = [[NSMutableArray alloc]initWithArray:newArray]; 
[allItemsDict setObject:Logs forKey:@"Logs"]; 

NSMutableDictionary *Root = [[NSMutableDictionary alloc]init]; 
[Root setObject:allItemsDict forKey:@"Root"]; 

// Now, write to the plist: 
[Root writeToFile:path atomically:YES]; 

NSDictionary *dictafterAppending = [NSDictionary dictionaryWithContentsOfFile: path]; 
NSLog(@"dictafterAppending..%@",dictafterAppending); 

，如果你停留在任意位置，那么请让我知道猪头...