添加更多的項目到XML文件中使用iphone

Question

在一些身體幫我，我用一個XMLFILE像

<?xml version="1.0" encoding="UTF-8"?> 
<MangoUserDataFile> 
    <Device>iPad</Device> 
    <Version>3.0</Version> 
     <UserName>XYZ</UserName> 
     <UserType>Admin</UserType> 
     <Module>TabView</Module>  
     <tab id="1"> 
     <item> 
        <name>Admin</name> 
        <value>WebView</value> 
        <image>20</image> 
       </item> 
     </tab> 
</MangoUserDataFile> 

我想從iPad的

對於〔實施例在此XMLFILE添加更多的項目，我創建一些文本框稱爲：

nametextfiled，valuetextfiels，imagetextfield

......有一次我在這些文本框輸入值並點擊提交當時在這些XML文件中應創建另一個項目

有些機構可以給我任何想法，我們如何在iPad中添加另一個項目在xmlfile中。

Answer 1

在這種情況下，您應該將所有元素重新寫入一個新的XML文件，並嘗試用新文件替換舊的XML文件。

寫作可以使用這些類來完成：

// 
// XMLBuilder.h 
// TaxiSharing 
// 
// Created by Erle on 02.07.09. 
// Copyright 2009 University of Duisburg-Essen, 
// Institute of Computer Science and Business Computer Science 
// Group for Pervasive Computing and User Interface Engineering 
// All rights reserved. 
// 

#import <Foundation/Foundation.h> 


@interface XMLBuilder : NSObject { 
    NSMutableString *XMLString; 

} 

@property(nonatomic,retain) NSMutableString *XMLString; 

-(void)addTagToXML:(NSString *)tag withValue:(NSString *)value; 
-(void)addSelfClosedTag:(NSString *)tag withInnerValueTitle:(NSString *)innerValueTitle andValue:(NSString *)value; 
-(void)addSelfClosedTag:(NSString *)tag withInnerString:(NSString *)innerString; 
-(void)addSingleTag:(NSString *)tag withInnerString:(NSString *)innerString; 
-(void)addSingleValue:(NSString *)value; 
-(void)addSingleTag:(NSString *)tag; 
-(void)endSingleTag:(NSString *)tag; 
-(void)closeXML; 

@end 

// 
// XMLBuilder.m 
// TaxiSharing 
// 
// Created by Erle on 02.07.09. 
// Copyright 2009 University of Duisburg-Essen, 
// Institute of Computer Science and Business Computer Science 
// Group for Pervasive Computing and User Interface Engineering 
// All rights reserved. 
// 

#import "XMLBuilder.h" 


@implementation XMLBuilder 

@synthesize XMLString; 

-(id)init{ 
    [super init]; 
    XMLString = [[NSMutableString alloc] initWithFormat:@"<?xml version=\"1.0\" encoding=\"UTF-8\"?> \n"]; 
    return self; 
} 

-(void)addTagToXML:(NSString *)tag withValue:(NSString *)value{ 
    [XMLString appendFormat:@"<%@>%@</%@> \n",tag,value,tag]; 
} 

-(void)addSelfClosedTag:(NSString *)tag withInnerValueTitle:(NSString *)innerValueTitle andValue:(NSString *)value{ 
    [XMLString appendFormat:@"<%@ %@=%@ /> \n",tag,innerValueTitle,value]; 
} 

-(void)addSelfClosedTag:(NSString *)tag withInnerString:(NSString *)innerString{ 
    [XMLString appendFormat:@"<%@ %@ /> \n",tag,innerString]; 
} 

-(void)addSingleTag:(NSString *)tag withInnerString:(NSString *)innerString{ 
    [XMLString appendFormat:@"<%@ %@ > \n",tag,innerString]; 
} 
-(void)addSingleValue:(NSString *)value{ 
    [XMLString appendFormat:@"%@ \n",value]; 
} 

-(void)addSingleTag:(NSString *)tag{ 
    [XMLString appendFormat:@"<%@> \n",tag]; 
} 

-(void)endSingleTag:(NSString *)tag{ 
    [XMLString appendFormat:@"</%@> \n",tag]; 
} 

-(void)closeXML{ 
    [XMLString appendFormat:@"\n"]; 
} 

-(void)dealloc{ 
    [super dealloc]; 
    [XMLString release]; 
} 
@end 

我發現這個代碼上http://www.iphonedevsdk.com/forum/tutorial-requests/34645-how-create-xml-file-dynamically.html。