Cocos2d 中的 UITextField 示例

问题描述

谁能推荐一些在 cocos2d 中使用 UITextField 的链接.我想按下标签，然后应该选择 UITextField 并且我需要在该 UITextField 上进行编辑.

Can anyone please suggest some links for using UITextField in cocos2d. I want to press on label, then the UITextField should get selected and I need to edit on that UITextField.

推荐答案

我在当前项目中这样做是为了允许输入要开始播放的关卡数，所以这就是为什么我的变量和方法被命名为他们的样子；您可能应该调整这些以使其对您有意义.

I'm doing this in a current project to allow for entering the number of the level to start playing at, so that's why my variables and methods are named the way they are; you should probably adjust these to make sense for you.

在您的应用控制器中，将其定义为实例变量:

In your app controller, define this as an instance variable:

  UITextField *levelEntryTextField;

在 applicationDidFinishLaunching 中创建它:

Create it inside applicationDidFinishLaunching:

  levelEntryTextField = [[UITextField alloc] initWithFrame:
                                              CGRectMake(60, 165, 200, 90)];
  [levelEntryTextField setDelegate:self];

定义激活文本字段的方法.您还应该在应用控制器的头文件中声明它.

Define a method to activate the text field. You should also declare it in the header file for your app controller.

- (void)specifyStartLevel
{
    [levelEntryTextField setText:@""];
    [window addSubview:levelEntryTextField];
    [levelEntryTextField becomeFirstResponder];    
}

这将使在键盘上按返回"结束编辑

This will make pressing "return" on the keypad end editing

- (BOOL)textFieldShouldReturn:(UITextField*)textField {
  //Terminate editing
  [textField resignFirstResponder];
  return YES;
}

这是在实际完成编辑时触发的.

This is triggered when the editing is actually done.

- (void)textFieldDidEndEditing:(UITextField*)textField {
    if (textField==levelEntryTextField) {
        [levelEntryTextField endEditing:YES];
        [levelEntryTextField removeFromSuperview];
        // here is where you should do something with the data they entered
        NSString *result = levelEntryTextField.text;
    }
}

现在要真正启动事物，你可以把它放在某个地方.我从我的一个场景类中调用它，以响应用户操作:

Now to actually set things in motion, you put this somewhere. I call this from within one of my Scene classes, in response to a user action:

  [[[UIApplication sharedApplication] delegate] specifyStartLevel];

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