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Wednesday, August 10, 2011
Tutorial for Radio button
The next standard control is the radiobutton, within a radiogroup.
//d:\android\mydemos\ex5\main.xml
(to be placed in tools\demo\res\layout)
------------------------------------------
==========================================
// d:\android\mydemos\ex5\demo.java
//( radiobuttons)
//(to be placed in tools\demo\src\mypack\mydemo)
package mypack.mydemos;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.*;
public class demo extends Activity
{
TextView label1;
RadioGroup group1;
RadioButton radio1,radio2;
Button button1;
EditText text1;
@Override
protected void onCreate(Bundle icicle)
{
super.onCreate(icicle);
setContentView(R.layout.main);
group1= (RadioGroup)
findViewById (R.id.group1);
radio1 = (RadioButton)
findViewById (R.id.radio1);
radio2 = (RadioButton)
findViewById (R.id.radio2);
button1 = (Button) findViewById(R.id.button1);
text1= (EditText) findViewById(R.id.text1);
text1.setText("radio");
label1 = (TextView) findViewById(R.id.label1);
label1.setText("where?");
button1.setOnClickListener(new clicker());
}
// ...inner class ---follows ->
class clicker implements Button.OnClickListener
{
public void onClick(View v)
{
if(v==button1)
{
if(radio1.isChecked())
{ text1.setText("madras");}
if(radio2.isChecked())
{ text1.setText("bombay");}
}
}
}
// ----inner class ends here ---
}
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