更改後在字典中追加對象

Question

我使用不同的objectsForKeys保存NSMutableArray。 我有三個對象由用戶輸入設置。 我希望能夠添加新的對象文本與.caf和.txt。所以當它們在下一個viewController中被調用時，它們可以被識別和使用。

這裏是我的代碼：

- (void)saveAction:(id)sender { 

    [self.nameTextField resignFirstResponder]; 
    [self.imageNameTextField resignFirstResponder]; 

    NSMutableDictionary *dictionary = [NSMutableDictionary dictionaryWithObjectsAndKeys: 


             @"main.caf",@"pictureAudioKey", 
             @"audio1.m4a",@"firstAudioKey", 
             @"audio2.m4a",@"secondAudioKey", 
             @"audio3.m4a",@"thirdAudioKey", 
             @"audio4.m4a",@"fourthAudioKey", 
             @"audio5.m4a",@"fifthAudioKey", 
             @"audio6.m4a",@"sixthAudioKey", 
             @"main.jpg",@"photoimagekey", 
             @"some.txt", @"identity", 
             @"imagename.txt",@"numberkey",nil]; 

//here is where I change the object values by what the user puts into the textfield imagename.text 
This works fine especially for the photo since it is recognized as a png without the extension and loaded 
    [dictionary setObject:[[self imageNameTextField]text] 
        forKey:@"photoimagekey"]; 
//However when you strip the .txt from a text file...or the .caf from an audio //file they are not recognized and not loaded. 
    [dictionary setObject:[[self imageNameTextField]text] 
        forKey:@"identity"]; 
//I tried this 
//identity=[identity stringByAppendingFormat:@"txt" But it didn't work 

    NSString *audioString = [dictionary objectForKey:@"pictureAudioKey"]; 
    audioString = [audioString stringByAppendingFormat:@".caf"]; 
    [dictionary setObject:[[self imageNameTextField]text] 
        forKey:@"pictureAudioKey"]; 

有沒有人有什麼建議？

Answer 1

變化：

[dictionary setObject:[[self imageNameTextField]text] 
       forKey:@"identity"]; 

到：

[dictionary setObject:[NSString stringWithFormat:@"%@.txt", [[self imageNameTextField] text]] 
       forKey:@"identity"];