1

我已将自定义按钮添加到工具栏并设置了属性 setEnabled:NO 但是当使用 SDK 4.0 加载视图时该按钮不会显示为灰色。但是，如果使用 SDK 3.1.2 编译相同的代码，则该按钮显示为灰色。有任何想法吗？

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];

    UIImage* pImage = [UIImage imageNamed:@"Test.png"];

    CGRect TestBtnFrame = CGRectMake(0, 0, pImage.size.width, pImage.size.height);
    UIButton* pTestBtn = [[UIButton alloc] initWithFrame:TestBtnFrame];

    [pTestBtn setTitle:@"  Test" forState:UIControlStateNormal];
    [pTestBtn addTarget:self action:@selector(OnTestBtnClick)   forControlEvents:UIControlEventTouchUpInside];      
    [pTestBtn setBackgroundImage:image forState:UIControlStateNormal];

    // [pTestBtn setEnabled:NO];     

    // Class member variable to be released in dealloc
    m_pTestBarBtn = [[UIBarButtonItem alloc] initWithCustomView: pTestBtn];
    [pTestBtn release]; 

    [m_pTestBarBtn setEnabled:NO];

    [self setToolbarItems:[NSArray arrayWithObjects: m_pTestBarBtn, nil] animated:YES];

}
4

1 回答 1

0

您忘记为禁用状态设置背景图像...

[ pTestBtn setBackgroundImage: **imageDisabled** forState: UIControlStateDisabled ];
于 2011-02-27T18:09:48.247 回答