And how can I call a non-void arguments activity? Is there a way to do
that? (i.e. select an item from a ListView and pass that as argument
to the new Action).
Thanks
On Jul 23, 6:32 am, janardhan <vuruvakilina...@gmail.com> wrote:
> package com.elegos.test;
>
> import android.app.Activity;
> import android.os.Bundle;
> import android.view.View;
> import android.view.View.OnClickListener;
> import android.widget.Button;
> import android.widget.TextView;
>
> public class ListViewTest extends Activity {
> /** Called when the activity is first created. */
> @Override
> public void onCreate(Bundle savedInstanceState) {
> super.onCreate(savedInstanceState);
> setContentView(R.layout.main);
>
> TextView myText = (TextView)findViewById(R.id.myTextView);
>
> Button nextButton = (Button)findViewById(R.id.ButtonNext);
>
> nextButton.setOnClickListener(new Button.OnClickListener() {
> public void onClick (View v){
> Intent nextIntent=new Intent
> (ListViewTes.this,ExmpActivity.class);
> startActivity(nextIntent);
>
> });
> }}
>
> U will create another activity by name ExmpActivity as follows
>
> package com.elegos.test;
>
> import android.app.Activity;
> import android.os.Bundle;
> import android.view.View;
> import android.view.View.OnClickListener;
> import android.widget.Button;
> import android.widget.TextView;
>
> public class ExmpActivity extends Activity {
> /** Called when the activity is first created. */
> @Override
> public void onCreate(Bundle savedInstanceState) {
> super.onCreate(savedInstanceState);
> setContentView(R.layout.xyz);
> Button backButton = (Button)findViewById(R.id.ButtonBack);
> backButton.setOnClickListener(new Button.OnClickListener() {
> public void onClick (View v){
> Intent backIntent=new Intent
> (ExmpActivity.this,ListViewTes.class);
> startActivity(backIntent);
>
> });
> }
> }
>
> On Jul 22, 2:27 pm, elegos <furlan.giac...@gmail.com> wrote:
>
> > Hello there!
>
> > I'm a newbie in Android programming, and was exploring the possibility
> > to switch between more than - one - layouts (i.e. more pages?).
>
> > So I've created a new XML layout page (called second.xml) and created
> > some things in there. At least I've created a button to switch back to
> > the first layout, but a NullPointerException fires up when the
> > application starts, and that only for the "back" button, while the
> > "next" button just works great.
>
> > Any suggestion?
> > Thanks :)
>
> > package com.elegos.test;
>
> > import android.app.Activity;
> > import android.os.Bundle;
> > import android.view.View;
> > import android.view.View.OnClickListener;
> > import android.widget.Button;
> > import android.widget.TextView;
>
> > public class ListViewTest extends Activity {
> > /** Called when the activity is first created. */
> > @Override
> > public void onCreate(Bundle savedInstanceState) {
> > super.onCreate(savedInstanceState);
> > setContentView(R.layout.main);
>
> > TextView myText = (TextView)findViewById(R.id.myTextView);
>
> > Button nextButton = (Button)findViewById(R.id.ButtonNext);
> > Button backButton = (Button)findViewById(R.id.ButtonBack);
>
> > nextButton.setOnClickListener(getCListener(R.layout.second));
> > try {backButton.setOnClickListener(getCListener
> > (R.layout.main));} catch(Exception e) {myText.append("\n"+e.toString
> > ());}
> > }
>
> > final private OnClickListener getCListener(final int layout) {
> > return new Button.OnClickListener() {
> > public void onClick(View v) {
> > setContentView(layout);
> > }
> > };
> > }
>
> > }
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