1

これは私が完成させようとしているコードです

-(IBAction)theButtonIsSelected:(id)sender {

    NSMutableDictionary *mutDict = [NSMutableDictionary dictionaryWithDictionary:[detailsDataSource objectAtIndex:detailIndex]];
    [mutDict setObject:@"Yes" forKey:@"Favorite"];

    NSString *nameString = [mutDict valueForKey:@"Name"];

    NSArray *allObjects;
    allObjects = [[NSArray alloc] initWithContentsOfFile:path];

    NSMutableArray *tmpMutArr = [NSMutableArray arrayWithArray:allObjects];
    int index;
     //I think I just need a little piece right here to set the current allObjectsIndex to match nameString?
    [tmpMutArr replaceObjectAtIndex:index withObject:[NSDictionary dictionaryWithDictionary:mutDict]];

    allObjects = nil;
    allObjects = [[NSArray alloc] initWithArray:tmpMutArr];

    [allObjects writeToFile:path atomically:YES];
    }

これは私の質問です：

if (what I'm trying to do above can be done) {
How to finish it?
} else {
How to make a function to change the "Favorite" key's value of plist object, 
when detailsDataSource not always containing the complete list of objects?
That's why I'm trying to include allObjects and index in this code.
}

編集：

コードは次のようになります。

     NSMutableDictionary *mutDict = [NSMutableDictionary dictionaryWithDictionary:[detailsDataSource objectAtIndex:detailIndex]];
     [mutDict setObject:@"Yes" forKey:@"Favorite"];

     NSString *nameString = [[detailsDataSource objectAtIndex:detailIndex] valueForKey:@"Name"];

     NSArray *allObjectsArray = [[NSArray alloc] initWithContentsOfFile:path];

     NSMutableArray *tmpMutArr = [NSMutableArray arrayWithArray:allObjectsArray];


     if(int i=0;i<[tmpMutArr count];i++)
//Errors ^here              and here^
     {
     if([[tmpMutArr  objectAtIndex:i] isKindOfClass:[NSDictionary class]])
     {
     NSMutableDictionary *tempDict = [tmpMutArr  objectAtIndex:i];
     if([tempDict valueForKey:@"Name" == [NSString stringWithFormat:@"@%", nameString];) //Is this correct?
     {
     index = i; //index of dictionary
     }
     }
     }

     [tmpMutArr replaceObjectAtIndex:i withObject:[NSDictionary dictionaryWithDictionary:mutDict]];

     allObjectsArray = nil;
     allObjectsArray = [[NSArray alloc] initWithArray:tmpMutArr];

     [allObjectsArray writeToFile:path atomically:YES];

エラー：1予期される式2宣言されていない識別子'i' Iを宣言し、他のエラーを修正する方法は？

4

1 に答える 1

3

次のような辞書のインデックスを取得できます。

 if(int i=0;i<[tmpMutArr count];i++)
 {
   if([[tmpMutArr  objectAtIndex:i] isKindOfClass:[NSDictionary class]])
   {
      NSMutableDictionary *tempDict = [tmpMutArr  objectAtIndex:i];
      if([tempDict objectForKey:@"Favorite")
      {
         index = i; // here u have your index of dictionary
      }
   }
 }
于 2012-08-14T04:44:37.363 に答える