cocoa-touch - 第一次点击UITextField时发生奇怪的崩溃

我的Cocos2d应用程序中有一个文本字段，当我点击它开始输入时，该应用程序崩溃了。我没有更多要解释的，这是我的代码：
。H：

@interface myScene : CCLayer <UITextFieldDelegate> { ....... }
@property (nonatomic, retain, readonly) UITextField *first;
@property (nonatomic, retain, readonly) UITextField *second;

.mm：

    @implementation myScene
    @synthesize first, second;
    ......
        first = [[UITextField alloc] initWithFrame:CGRectMake(160.0, 160.0, 200.0, 30.0)];
        first.placeholder = @"first";
        first.autocorrectionType = UITextAutocorrectionTypeNo;  // no auto correction suppor
        first.keyboardType = UIKeyboardTypeDefault; // use the default type input method (entire keyboard)
        first.returnKeyType = UIReturnKeyDone;
        first.clearButtonMode = UITextFieldViewModeWhileEditing;    // has a clear 'x' button to the right
        first.autocapitalizationType =  UITextAutocapitalizationTypeNone;
        CGAffineTransform transform = CGAffineTransformMakeRotation(3.14159/2);
        first.transform = transform;
        first.adjustsFontSizeToFitWidth = YES;
        first.textColor = [UIColor blackColor];
        [first setFont:[UIFont fontWithName:@"Arial" size:14]];
        first.backgroundColor = [UIColor clearColor];
        first.borderStyle = UITextBorderStyleRoundedRect;
        first.delegate = self;  // let us be the delegate so we know when the keyboard's "Done" button is pressed
        [[[CCDirector sharedDirector] openGLView] addSubview: first];


        second = [[UITextField alloc] initWithFrame:CGRectMake(130.0, 160.0, 200.0, 30.0)];
        second.placeholder = @"second";
        second.returnKeyType = UIReturnKeyDone;

        second.transform = transform;
        second.adjustsFontSizeToFitWidth = YES;
        second.textColor = [UIColor blackColor];
        [second setFont:[UIFont fontWithName:@"Arial" size:14]];
        second.backgroundColor = [UIColor clearColor];
        second.borderStyle = UITextBorderStyleRoundedRect;
        second.secureTextEntry = YES;
        second.delegate = self; // let us be the delegate so we know when the keyboard's "Done" button is pressed
        [[[CCDirector sharedDirector] openGLView] addSubview: second];

...............


    - (BOOL)textFieldShouldReturn:(UITextField *)textField
    {
        // the user pressed the "Done" button, so dismiss the keyboard
        [textField resignFirstResponder];
        return YES;
    }

我在带有iOS 4.3的Xcode 4上运行，当我点击其中一个字段时，我得到EXC_BAD_ACCESS，并且Xcode将我指向main.m：

#import <UIKit/UIKit.h>

int main(int argc, char *argv[]) {
    NSAutoreleasePool *pool = [NSAutoreleasePool new];
    int retVal = UIApplicationMain(argc, argv, nil, @"AppDelegate");
    [pool release];
    return retVal;
}

Xcode指示该行：int retVal = UIApplicationMain(argc, argv, nil, @"AppDelegate");

谢谢。

最佳答案

我不认为这是在您的openGL视图中添加文本字段的最佳方法，实际上我不确定它是否会起作用。您可能需要将字段包含在UIViewController子类中，然后将该类的视图添加到您的openGLView中，或者有一个不错的UIViewWrapper您可以得到here。它使您可以将UIView元素添加到CCLayer。希望这可以帮助

关于cocoa-touch - 第一次点击UITextField时发生奇怪的崩溃，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/5996630/