Question

I have a NSAlert with a combobox in it and i need to know it s value every time it changes.
In my .h i have implemented the NSComboBoxDelegate protocol and NSComboBox* comboBox.

In my .m i have:

[comboBox setDelegate:self];


- (void)comboBoxSelectionDidChange:(NSNotification *)notification{
    int x = [[comboBox stringValue] intValue];
    NSLog(@"ComboBox Value Changed to --> %i", x);
}

But here is the problem:
the default value of the combobox is 2. if i change the value to, for example, 6 my NSLog displays: ComboBox Value Changed to --> 2
Then, when i change it s value back to 2, my NSLog displays: ComboBox Value Changed to --> 6
Any ideas about this problem? Thank you.

PS:我已经尝试过其他 NSComboBoxDelegate 方法,但发生的情况与上述我所描述的相同。

Answer 1

更改代码以使用对象ValueofSectiveTround 而不是字符串Value 。

- (void)comboBoxSelectionDidChange:(NSNotification *)notification{
    int x = [[notification.object objectValueOfSelectedItem] intValue];
    NSLog(@"ComboBox Value Changed to --> %i", x);
}

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