Approach to singleton for screens

Hello

I would like to know if it is advisable to use a singleton pattern when you push the screen on the stack.

For example:

package com.xyz.mobile;

Import net.rim.device.api.ui.container.MainScreen;

SerializableAttribute public class EntryScreen extends form {}

Private Shared EntryScreen thisInstance = null;
   
private EntryScreen() {}
Super();
TODO initialize the fields here
}
   
public static getInstance() {} EntryScreen
{if(thisInstance==null)}
thisInstance = new EntryScreen();
}
Return thisInstance;
}
   
}

Now in my application UI I would call:

pushScreen (EntryScreen.getInstance ());

The advantage I see is I would not re - initialize my fields whenever I want to push the EntryScreen in the stack. Is this recommended practice. ? Kindly guide me with this.

Thanking you,

Kind regards

S.A.Norton Stanley

If you have a reference to the screen, it will not change.

You can do
YourScreen yourScreen = new YourScreen();
pushScreen (yourScreen);
popScreen (yourScreen);
pushScreen (yourScreen);
etc.

Tags: BlackBerry Developers

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