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javajava-memidplcdui
Sabin Jose
Sabin Jose

Reputation: 658

How to switch Display between different classes in Java ME

I am developing a Java ME program. The different forms are located in separate classes. I tried to switch display between main MIDlet and a class and succeeded. How to do the same between two classes? I am just a beginner in Java ME.

Upvotes: 3

Views: 609

Answers (2)

Douglas Frari
Douglas Frari

Reputation: 4377

Simplification is:

  Display.getDisplay(this).setCurrent(screen);

Where screen is an instance of LCDUI (Form, Alert...) or intance of Canvas object. The this is an instance of the MIDlet

Upvotes: 3

Lucifer
Lucifer

Reputation: 29632

I use following code for the same,

  • First display a static Display variable in Midlet

    private static Display display;

  • Now initialize the dislplay variable in class Constructor

    public MyMidlet() {
     display = Display.getDisplay(this);
}

  • Now declare a getDisplay() method in Midlet class 

    public static Display getDisplay () {
     return display;
}

Now you can use this getDisplay() method to get the current Display's object and then set any class's form 

MyMidlet.getDisplay().setCurrent(form);

Upvotes: 4

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