[Q] Some problem with my code - Android Q&A, Help & Troubleshooting

Hi, I having some problem with this simple code. I don't undestrand because ADT impost fields as EditText, TextView and Button as field final. I think that there' some errore in my code, I admit that is one of my first times that i programming for andoird, so have patience with me.
I apologize if I wrong section :silly:
That's my code:
package com.example.buttoncerca;
import android.os.Bundle;
import android.app.Activity;
import android.text.Editable;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class RisponditoreInterattivoActivity extends Activity implements Lista {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_risponditore_interattivo);
final EditText text = (EditText)this.findViewById(R.id.campoNome);
Button button = (Button)this.findViewById(R.id.buttone);
final TextView tv = (TextView)this.findViewById(R.id.testoSaluto);
button.setOnClickListener(new OnClickListener(){
public void onClick(View arg0){
Editable nome = text.getText();
String s = nome.toString();
for(int c =0; c<3; c++){
if(toppings[c].equals(s)){
tv.setText(toppings[c] + " si butta nel " + cestino[c]);
} //End if
}//End for
}//End onClick
});
}
}
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I implements inteface Lista, this is code:
package com.example.buttoncerca;
public interface Lista {
String[] toppings = {"Plastica", "Legno", "Cartone"};
String[] cestino = {"Cestino plastica", "Cestino legno", "Cestino cartone"};
}
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And... what's the problem? Please post it "as is".

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You need to instantiate the editable first, with BUFFERTYPE.EDITABLE, because in your current case you are casting a charseq to an editable so that's likely the exception you are getting (hard to know without a logcat). See here:
http://developer.android.com/reference/android/widget/EditText.html#getText()
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