Newb Q: How to switch between views

Iska · by **Iska** » Sat Feb 21, 2009 6:05 pm

Hey everyone,

I'm a webdesigner (php, mysql, xml, css etc. etc.) for several years but never worked with Java in a professional way. So I decided to play with the Android SDK to change that which went very good, until I tried to switch between different contentviews (layouts). I've checked the Getting Started pages by Google, but I failed to find a clear example.
What I was trying to do was switching from R.layout.intro (intro.xml) to R.layout.menu (mainmenu.xml), but adding an extra 'setContentView' made the app crash and opening a new activity (which wasn't exactly the way I wanted it) didn't work out either.

I hope some of you could help me with this matter

Thanks in advance,
Iska

Iska · by **Iska** » Sun Feb 22, 2009 8:39 pm

Okay, I learned that I've got to use the ViewGroups. The only problem left is that when I finally entered all the parameters for the ViewGroup constructer, the compiler tells me: 'Cannot instantiate the type ViewGroup'!
My Code:

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import android.app.Activity;
 
import android.os.Bundle;
 
import android.view.Window;
 
import android.view.WindowManager;
 
import android.view.View;
 
import android.view.ViewGroup;
 
import android.view.View.OnClickListener;  
 
import android.widget.TextView;
 
import android.widget.Button;
 
import android.widget.EditText;
 
//Main class
 
public class CookAssistance extends Activity
 
{
 
        public  ViewGroup       vgViews;
 
        @Override
 
    //Create functie
 
    public void onCreate(Bundle savedInstanceState)
 
    {
 
        super.onCreate(savedInstanceState);
 
        //Titel verwijderen
 
        requestWindowFeature(Window.FEATURE_NO_TITLE);
 
        //Fullscreen
 
        this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
 
        vgViews = new ViewGroup(this.getApplicationContext());
 
        //Gebruik main.xml voor de layout
 
        setContentView(R.layout.intro);
 
        onStart(savedInstanceState);
 
    }
 
        //Start functie
 
    public void onStart(Bundle savedInstanceState)
 
    {
 
    }
 
}
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Newb Q: How to switch between views

Newb Q: How to switch between views

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