怎樣的NSMutableArray保存到的plist在iphone

我在iphone新的，我想NSMutableArray的數據保存到plist文件我的代碼是：怎樣的NSMutableArray保存到的plist在iphone

NSArray *array = [[NSArray alloc] initWithArray:self.artistDetailsArray]; 
[self.artistDetailsArray writeToFile:self.path atomically:YES];

但它顯示在我的plist路徑0元。請任何幫助我。

在此先感謝：

下面是我的代碼來存儲數據到plist中和NSUserDefault。他們都沒有爲NSMutableArray/NSArray工作，但爲NSString工作。是否有任何最大大小限制存儲在plist或UserDefault？ NSMutableArray只包含text/set的NSDictionary。

請給我建議。

- (void)initialiseDataFromLocalStorage 
{ 
     NSFileManager *fileManager = [NSFileManager defaultManager]; 
     NSError *error; 
     NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
     NSString *documentsDirectory = [paths objectAtIndex:0]; 
     self.path = [documentsDirectory stringByAppendingPathComponent:@"saveLogin.plist"]; 
     if ([fileManager fileExistsAtPath:self.path] == NO) { 
       NSString *pathToDefaultPlist = [[NSBundle mainBundle] pathForResource:@"saveLogin" ofType:@"plist"]; 
       if ([fileManager copyItemAtPath:pathToDefaultPlist toPath:self.path error:&error] == NO) { 
         NSAssert1(0,@"Failed with error '%@'.", [error localizedDescription]); 
       } 
     } 

    // To get stored value from .plist 
     NSDictionary *dict = [[NSDictionary alloc]initWithContentsOfFile:self.path]; 
     self.ResumedataDictionary = [[NSMutableDictionary alloc]initWithDictionary:dict]; 
     [dict release]; 
    self.artistDetailsArray = [[NSMutableArray alloc] initWithArray:[self.ResumedataDictionary objectForKey:@"artistDetailsDict"]];  
    // To get stored value from NSUserDefault 
    NSUserDefaults *fetchData = [NSUserDefaults standardUserDefaults]; 
    self.artistDetailsArray = [fetchData objectForKey:@"artistDetailsDict"];  
}   

-(void)saveDataToLocalStorage 
{  
    // To store value into .plist 
    NSArray *array = [[NSArray alloc] initWithArray:self.artistDetailsArray]; 
    [ResumedataDictionary setObject:array forKey:@"artistDetailsDict"]; 
     [ResumedataDictionary writeToFile:self.path atomically:YES]; 

    // To store value into NSUserDefault 
    NSUserDefaults *fetchData = [NSUserDefaults standardUserDefaults]; 
    [fetchData setObject:self.artistDetailsArray forKey:@"artistDetailsDict"];  
}

來源

2012-02-20 iPhone4s

NSData *serializedData; 
     NSString *error; 
     serializedData = [NSPropertyListSerialization dataFromPropertyList:YourArray(You can use dictionaries.strings..and others too) 
     format:NSPropertyListXMLFormat_v1_0 errorDescription:&error]; 
     if (serializedData) { 
     // Serialization was successful, write the data to the file system // Get an array of paths. 

     NSArray *documentDirectoryPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
     NSString *docDir = [NSString stringWithFormat:@」%@/serialized.xml」, 
     [documentDirectoryPath objectAtIndex:0]]; 
     [serializedData writeToFile:docDir atomically:YES]; 
} 
     else { 
     // An error has occurred, log it 
     NSLog(@」Error: %@」,error); } 
     }

來源

2012-02-20 06:18:50 Shubhank

看看這個代碼創建路徑的文件目錄的plist：

NSError *error; 
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); //1 
NSString *documentsDirectory = [paths objectAtIndex:0]; //2 
NSString *path = [documentsDirectory stringByAppendingPathComponent:@"data.plist"]; //3 

NSFileManager *fileManager = [NSFileManager defaultManager]; 

if (![fileManager fileExistsAtPath: path]) //4 
{ 
NSString *bundle = [[NSBundle mainBundle] pathForResource:@」data」 ofType:@」plist」]; //5 

[fileManager copyItemAtPath:bundle toPath: path error:&error]; //6 
}

1）創建的路徑列表。

2）從列表中獲取文檔目錄的路徑。

3）創建一個完整的文件路徑。

4）檢查文件是否存在。

5）獲取您的plist之前創建的捆綁目錄路徑（Xcode）。

6）將此plist複製到您的文檔目錄。

下一個讀數據：

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

//load from savedStock example int value 
int value; 
value = [[savedStock objectForKey:@"value"] intValue]; 

[savedStock release];

寫入數據：

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

//here add elements to data file and write data to file 
int value = 5; 

[data setObject:[NSNumber numberWithInt:value] forKey:@」value」]; 

[data writeToFile: path atomically:YES]; 
[data release]

來源

2012-02-20 06:23:47

嗨氖，感謝您的及時響應。我使用了相同的代碼，它爲NSString值工作，但不適用於NSMutableArray或NSArray。任何建議？ :( – iPhone4s 2012-02-20 06:37:27

NSMutableArray *array=[[NSMutableArray alloc] init]; 
    [array addObject:@"test"]; 
    [array writeToFile:@"/Users/parag/test.plist" atomically:YES]; 
    [array release];

或

NSMutableArray *array=[[NSMutableArray alloc] init]; 
[array addObject:@"test121"]; 
id plist = [NSPropertyListSerialization dataFromPropertyList:(id)array       format:NSPropertyListXMLFormat_v1_0 errorDescription:@error]; 


[plist writeToFile:@"/Users/parag/test.plist" atomically:YES];

看看Creating Property Lists Programmatically

來源

2012-02-20 06:43:13

您可以使用屬性列表（NSPropertyListSerialization或writeToFile：方式）。但請確保您的數組僅包含有效的屬性列表對象（NSString，NSNumber，NSData，NSArray或NSDictionary對象），並且NSDictionary只有NSString鍵。自定義（複雜）對象必須表示爲字典。

或者您應該通過NSCoding協議使用檔案http://developer.apple.com/library/ios/#documentation/Cocoa/Conceptual/Archiving/Archiving.html的方法。好的指導在這裏http://cocoadevcentral.com/articles/000084.php

來源

2012-02-20 07:32:03

怎樣的NSMutableArray保存到的plist在iphone

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