NSXMLDocumentの.xmlへの書き込み

Question

ファイルが正しくフォーマットされない理由を知っていますか？ "< taskinprogress>"の9行目。 "< project>"を "< taskinprogress>と同じ行に置き、私は理由がありません。" <プロジェクト "を文字列に\ n文字を追加せずに次の行に移動します。

<client_state> 
    <platform>******PLATFORMNAME*******</platform> 
    <OS_version>********OS VERSION*******</OS_version> 
    <client_version>********client VERSION*******</client_version> 
    <power_supply_connected>********POWER SUPPLY CONNECTED*******</power_supply_connected> 
    <work_mode>********Work Mode*******</work_mode> 
    <battery_level>********Battery Level*******</battery_level> 
    <last_update>********Last Update*******</last_update> 
    <task_in_progress>********task_in_progress*******<project>********Project*******</project> 
     <application>********Application*******</application> 
     <xml_file>********xml_file*******</xml_file> 
     <task_id>********task_id*******</task_id> 
     <create_time>********create_time*******</create_time> 
     <receive_time>********receive_time*******</receive_time> 
     <input>********input*******</input> 
    </task_in_progress> 
</client_state> 

次のノードとのすべての要素を宣言する私のコードです。

#import <Foundation/Foundation.h> 

int main (int argc, const char * argv[]) { 

    NSXMLElement *client_state = [[NSXMLElement alloc] initWithName:@"client_state"]; 

    NSXMLElement *platform = [[NSXMLElement alloc] initWithName:@"platform"]; 
    [platform setStringValue:@"******PLATFORMNAME*******"]; 
    [client_state addChild:platform]; 
    [platform release]; 

    NSXMLElement *OS_version = [[NSXMLElement alloc] initWithName:@"OS_version"]; 
    [OS_version setStringValue:@"********OS VERSION*******"]; 
    [client_state addChild:OS_version]; 
    [OS_version release]; 

    NSXMLElement *client_version = [[NSXMLElement alloc] initWithName:@"client_version"]; 
    [client_version setStringValue:@"********client VERSION*******"]; 
    [client_state addChild:client_version]; 
    [client_version release]; 

    NSXMLElement *power_supply_connected = [[NSXMLElement alloc] initWithName:@"power_supply_connected"]; 
    [power_supply_connected setStringValue:@"********POWER SUPPLY CONNECTED*******"]; 
    [client_state addChild:power_supply_connected]; 
    [power_supply_connected release]; 

    NSXMLElement *work_mode = [[NSXMLElement alloc] initWithName:@"work_mode"]; 
    [work_mode setStringValue:@"********Work Mode*******"]; 
    [client_state addChild:work_mode]; 
    [work_mode release]; 

    NSXMLElement *battery_level = [[NSXMLElement alloc] initWithName:@"battery_level"]; 
    [battery_level setStringValue:@"********Battery Level*******"]; 
    [client_state addChild:battery_level]; 
    [battery_level release]; 

    NSXMLElement *last_update = [[NSXMLElement alloc] initWithName:@"last_update"]; 
    [last_update setStringValue:@"********Last Update*******"]; 
    [client_state addChild:last_update]; 
    [last_update release]; 

    //if(task in progress) 

    NSXMLElement *task_in_progress = [[NSXMLElement alloc] initWithName:@"task_in_progress"]; 
    [task_in_progress setStringValue:@"********task_in_progress*******"]; 
    [client_state addChild:task_in_progress]; 
    [task_in_progress retain]; 
    [task_in_progress release]; 

    //start adding to inner task in progress 

    NSXMLElement *project = [[NSXMLElement alloc] initWithName:@"project"]; 
    [project setStringValue:@"********Project*******"]; 
    [task_in_progress addChild:project]; 
    [project release]; 

    NSXMLElement *application = [[NSXMLElement alloc] initWithName:@"application"]; 
    [application setStringValue:@"********Application*******"]; 
    [task_in_progress addChild:application]; 
    [application release]; 

    NSXMLElement *xml_file = [[NSXMLElement alloc] initWithName:@"xml_file"]; 
    [xml_file setStringValue:@"********xml_file*******"]; 
    [task_in_progress addChild:xml_file]; 
    [xml_file release]; 

    NSXMLElement *task_id = [[NSXMLElement alloc] initWithName:@"task_id"]; 
    [task_id setStringValue:@"********task_id*******"]; 
    [task_in_progress addChild:task_id]; 
    [task_id release]; 

    NSXMLElement *create_time = [[NSXMLElement alloc] initWithName:@"create_time"]; 
    [create_time setStringValue:@"********create_time*******"]; 
    [task_in_progress addChild:create_time]; 
    [create_time release]; 

    NSXMLElement *receive_time = [[NSXMLElement alloc] initWithName:@"receive_time"]; 
    [receive_time setStringValue:@"********receive_time*******"]; 
    [task_in_progress addChild:receive_time]; 
    [receive_time release]; 

    NSXMLElement *input = [[NSXMLElement alloc] initWithName:@"input"]; 
    [input setStringValue:@"********input*******"]; 
    [task_in_progress addChild:input]; 
    [input release]; 

    [task_in_progress release]; 

    NSXMLDocument *xmlRequest = [NSXMLDocument documentWithRootElement:client_state]; 
    [client_state release]; 
    NSLog(@"XML Document\n%@", xmlRequest); 
    NSData *xmlData = [xmlRequest XMLDataWithOptions:NSXMLNodePrettyPrint]; 
    [xmlData writeToFile:@"client_state.xml" atomically:YES]; 
    [xmlRequest release]; 
    return 0; 
} 

Answer 1

私の部分に

愚かなミス。私はそれを考え出した。誰にもこれと好奇心、すべてのルートを読んでいる場合型ノードも値を持たないはずです。ノードとして "< task_in_progress"を使用していますので、その宣言に続く行を削除する必要がありました配給：

//delete this: Its a root, not a node w/ a value 
[task_in_progress setStringValue:@"********task_in_progress*******"];