Activity01.java

package com.yarin.android.Examples_06_03;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.KeyEvent;

public class Activity01 extends Activity {
    private int miCount = 0;

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

        miCount = 1000;
    }

    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            //�˳�Ӧ�ó���ʱ��������
            /* �����ʼ��ĵ�ַ */
            Uri uri = Uri.parse("mailto:ggd543@gmail.com");

            /* ����Intent */
            Intent it = new Intent(Intent.ACTION_SENDTO, uri);

            /* �����ʼ������� */
            it.putExtra(android.content.Intent.EXTRA_SUBJECT, "���ݱ���");

            /* �����ʼ������� */
            it.putExtra(android.content.Intent.EXTRA_TEXT, "�������" + miCount);

            /* ���� */
            startActivity(it);

            this.finish();
            return true;
        }
        return super.onKeyDown(keyCode, event);
    }
}