Probably:
new CheckBox (null) == new CheckBox (Dynamiclayout.this)
A log of the error you get would be more useful..
On Tue, Aug 24, 2010 at 6:25 PM, Sara Khalatbari saracom...@gmail.comwrote:
Hi all
I am trying to run the attached code to display a checkbox when I click on
the buttons.
My program crashes though and I can not see why.
Do you have any idea?
Thank you,
Sara
package Dynamiclayout.example.com;
import Dynamiclayout.example.com.R;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.ScrollView;
import android.widget.LinearLayout;
import android.widget.Button;
import android.widget.CheckBox;
public class Dynamiclayout extends Activity {
ButtonbuttonGET,buttonPost;
CheckBox checkbox1;
LinearLayout ll = null;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
class clicker implements Button.OnClickListener {
@Override
public void onClick(View v) {
if(v==buttonGET){
checkbox1 = new CheckBox (null);
checkbox1.setText(I'm dynamic!);
ll.addView(checkbox1);
}
if(v==buttonPost){
checkbox1.setText(I'm very dynamic!);
ll.addView(checkbox1);
}
}
}
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ScrollView sv = new ScrollView(this);
//LinearLayout ll = new LinearLayout(this);
ll = new LinearLayout(this);
ll.setOrientation(LinearLayout.VERTICAL);
sv.addView(ll);
buttonGET = new Button(this);
buttonGET.setText(GET);
ll.addView(buttonGET);
buttonGET.setOnClickListener(new clicker());
buttonPost = new Button(this);
buttonPost.setText(POST);
ll.addView(buttonPost);
buttonPost.setOnClickListener(new clicker());
this.setContentView(sv);
}
}
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