Question

我来自Android，现在我正在学习Blackberry。

在Android中访问其他类我们可以在java中传递类似“this”的上下文。怎么在黑莓手机上做到这一点？问题出在Blackberry我想在其他类中添加一个Screen类的字段/管理器，例如代码：

public final class MyScreen extends MainScreen
{
//Creates a new MyScreen object

   public MyScreen()
   {        
    // Set the displayed title of the screen       
    setTitle("MyTitle");
    process1 x = new process1(); // will add the labelfield
   }
}

这在其他文件类

中

public class process1
{
   public process1()
   {        
    //i'm trying to get the context of MyScreen so i can add the field in this class
     MyScreen.add(new Labelfield("test"));
    //but its giving error with the message cannot make static reference
   }
}

Answer 1

更改process1构造函数以获取MyScreen对象：

public process1(MyScreen screen)
   {        
     screen.add(new Labelfield("test"));
   }

Blackberry - 访问其他类实例上下文

1 个答案: