试图将UIButton添加到UIView但得到NSInvalidArgumentException',原因:' - [UIView addSubView:]:无法识别

Question

我正在尝试将UIButton添加到UIView,但我在运行时收到此错误.

NSInvalidArgumentException',原因:' - [UIView addSubView:]:无法识别

XCode也警告我

实例方法'-addSubView:'未找到(返回类型默认为'id')

这是我的代码:

 UIView *trackPaneView = [[[UIView alloc] initWithFrame:CGRectMake(0, 0, 768, 100)] autorelease];
    [trackPaneView setBackgroundColor:[UIColor blueColor]];

UIButton *testButton = [[UIButton alloc] initWithFrame:CGRectMake(100, 10, 100, 30)];
    [testButton setTitle:@"AWESOME" forState:UIControlStateNormal];
    [trackPaneView addSubView:testButton];  //the error coming form this line

Answer 1

该方法addSubview:不是addSubView:

(大写错误)