Activity01.java

package com.yarin.android.Examples_04_07;

import android.app.Activity;
import android.os.Bundle;
import android.view.Gravity;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
import android.widget.Toast;

public class Activity01 extends Activity {
	/**
	 * ����TextView���� ����RadioGroup���� ����4��RadioButton����
	 */
	TextView m_TextView;
	RadioGroup m_RadioGroup;
	RadioButton m_Radio1, m_Radio2, m_Radio3, m_Radio4;

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);

		/**
		 * ���TextView���� ���RadioGroup���� ���4��RadioButton����
		 */
		m_TextView = (TextView) findViewById(R.id.TextView01);
		m_RadioGroup = (RadioGroup) findViewById(R.id.RadioGroup01);
		m_Radio1 = (RadioButton) findViewById(R.id.RadioButton1);
		m_Radio2 = (RadioButton) findViewById(R.id.RadioButton2);
		m_Radio3 = (RadioButton) findViewById(R.id.RadioButton3);
		m_Radio4 = (RadioButton) findViewById(R.id.RadioButton4);

		/* �����¼����� */
		m_RadioGroup
				.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
					@Override
					public void onCheckedChanged(RadioGroup group, int checkedId) {
						// TODO Auto-generated method stub
						if (checkedId == m_Radio2.getId()) {
							DisplayToast("��ȷ�𰸣�" + m_Radio2.getText()
									+ "����ϲ�㣬�ش���ȷ��");
						} else {
							DisplayToast("��ע�⣬�ش����");
						}
					}
				});
	}

	/* ��ʾToast */
	public void DisplayToast(String str) {
		Toast toast = Toast.makeText(this, str, Toast.LENGTH_LONG);
		// ����toast��ʾ��λ��
		toast.setGravity(Gravity.BOTTOM, 0, 220);
		// ��ʾ��Toast
		toast.show();
	}
}