iOS 4 无法访问变量导致应用程序崩溃

Question

在 iOS 4 下，当我的应用程序从 xcode 安装时，它会在第一次启动时崩溃，但在后续启动时不会崩溃。

注释掉一些 addSubView 方法后，调试器终于给了我一条信息，

它在 [super viewDidLoad] 上崩溃。调试器指出：

无法访问变量“button1”

- (void)viewDidLoad {
    [super viewDidLoad];

    self.view.backgroundColor = [UIColor blackColor];

    UIButton *button1 = [UIButton buttonWithType:UIButtonTypeCustom];

从控制台访问变量“button1”断点信息：

Pending breakpoint 1 - ""RootViewController.m":20" resolved
Pending breakpoint 2 - ""RootViewController.m":127" resolved
Pending breakpoint 3 - ""RootViewController.m":134" resolved
Pending breakpoint 4 - ""RootViewController.m":140" resolved
Pending breakpoint 5 - ""RootViewController.m":146" resolved
Pending breakpoint 6 - ""RootViewController.m":162" resolved
Pending breakpoint 7 - ""RootViewController.m":157" resolved
Pending breakpoint 8 - ""RootViewController.m":152" resolved
Pending breakpoint 9 - ""RootViewController.m":23" resolved
Pending breakpoint 10 - ""RootViewController.m":26" resolved
Pending breakpoint 11 - ""RootViewController.m":28" resolved
Pending breakpoint 12 - ""RootViewController.m":27" resolved
Pending breakpoint 13 - ""RootViewController.m":29" resolved
Pending breakpoint 14 - ""RootViewController.m":31" resolved
Pending breakpoint 15 - ""RootViewController.m":30" resolved
Pending breakpoint 16 - ""RootViewController.m":32" resolved
Pending breakpoint 17 - ""RootViewController.m":33" resolved
Pending breakpoint 18 - ""RootViewController.m":34" resolved
Pending breakpoint 19 - ""RootViewController.m":35" resolved
Pending breakpoint 20 - ""RootViewController.m":36" resolved
Pending breakpoint 21 - ""RootViewController.m":37" resolved
Pending breakpoint 22 - ""RootViewController.m":21" resolved
Pending breakpoint 23 - "objc_exception_throw" resolved

Answer 1

当尝试在调试模式下检查变量时，我遇到了相同的错误消息“无法访问变量”。

正如其中一条评论中提到的，我的问题是我正在调试我的发布版本而不是调试版本。