'colorchooser'未宣布

Question

好吧所以我对可可来说是一个超级新手，我有一个失败的东西。它首先说明了'colorchooser'未声明（colorchooser.selectedSegmentIndex == 0）我不知道出了什么问题！

//
//  Flashbox2ViewController.m
//  Flashbox2
//
//  Created by Paxton Harman on 2/1/11.
//  Copyright 2011 Santa Barbara City College. All rights reserved.
//

#import "Flashbox2ViewController.h"

@implementation Flashbox2ViewController
@synthesize colorChooser, sampleText;

-(IBAction) colorChanged {
    if (colorchooser.selectedSegmentIndex == 0) sampleText.textColor = [UIColor blackColor];
    if (colorchooser.selectedSegmentIndex == 1) sampleText.textColor = [UIColor blueColor];
    if (colorchooser.selectedSegmentIndex == 2) sampleText.textColor = [UIColor redColor];
}

Answer 1

选择colorchooser或colorChooser

Answer 2

如果你正在制作一个@property的colorChooser并且@synthesize它......那么很明显你应该使用colorChooser.selectedSegmentIndex而不是colorchooser.selectedSegmentIndex ...

干杯