Activity01.java

package com.yarin.android.Examples_04_01;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

/**
 * �ؼ��¼�ͨ��������ؼ��ļ������������������¼� ���������¼���ͨ����дonKeyDown���� ���������¼���ͨ����дonKeyUp����
 * ���ʵ���¼���ͨ��ʵ��onTouchEvent���� ʾ����ʹ����Toast�ؼ��� Toast.makeText(this, string,
 * Toast.LENGTH_SHORT).show(); ��ʾ��ʾ��Ϣ
 */

public class Activity01 extends Activity {
    private static String TAG = Activity01.class.getName();

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);
        // ���Button����
        Button button_ok = (Button) findViewById(R.id.ok);
        // ����Button�ؼ�������
        button_ok.setOnClickListener(new Button.OnClickListener() {
            public void onClick(View v) {
                Log.v(TAG, "click " + v);
                // ���ﴦ���¼�
                DisplayToast("�����OK��ť");
            }
        });

    }

    /* �����������������¼� */
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        Log.v(TAG,"onKeyDown");
        switch (keyCode) {
            case KeyEvent.KEYCODE_DPAD_CENTER:
                DisplayToast("���£��м�");
                break;
            case KeyEvent.KEYCODE_DPAD_UP:
                DisplayToast("���£��Ϸ����");
                break;
            case KeyEvent.KEYCODE_DPAD_DOWN:
                DisplayToast("���£��·����");
                break;
            case KeyEvent.KEYCODE_DPAD_LEFT:
                DisplayToast("���£������");
                break;
            case KeyEvent.KEYCODE_DPAD_RIGHT:
                DisplayToast("���£��ҷ����");
                break;
        }
        return super.onKeyDown(keyCode, event);
    }

    /* �����������������¼� */
    public boolean onKeyUp(int keyCode, KeyEvent event) {
        Log.v(TAG, "onKeyUp");
        switch (keyCode) {
            case KeyEvent.KEYCODE_DPAD_CENTER:
                DisplayToast("�����м�");
                break;
            case KeyEvent.KEYCODE_DPAD_UP:
                DisplayToast("�����Ϸ����");
                break;
            case KeyEvent.KEYCODE_DPAD_DOWN:
                DisplayToast("�����·����");
                break;
            case KeyEvent.KEYCODE_DPAD_LEFT:
                DisplayToast("���������");
                break;
            case KeyEvent.KEYCODE_DPAD_RIGHT:
                DisplayToast("�����ҷ����");
                break;
        }

        return super.onKeyUp(keyCode, event);
    }

    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
        Log.v(TAG, "onKeyMultiple: keyCode: "+keyCode+" repeatCout: "+repeatCount+" KeyEvent's Characters: "+event.getCharacters());
        return super.onKeyMultiple(keyCode, repeatCount, event);
    }

    /* �����¼� */
    public boolean onTouchEvent(MotionEvent event) {
        int iAction = event.getAction();
        if (iAction == MotionEvent.ACTION_CANCEL
                || iAction == MotionEvent.ACTION_DOWN
                || iAction == MotionEvent.ACTION_MOVE) {
            return false;
        }
        // �õ����ʵ����λ��
        int x = (int) event.getX();
        int y = (int) event.getY();

        DisplayToast("���ʵ�����꣺(" + Integer.toString(x) + ","
                + Integer.toString(y) + ")");

        return super.onTouchEvent(event);
    }

    /* ��ʾToast */
    public void DisplayToast(String str) {
        Toast.makeText(this, str, Toast.LENGTH_SHORT).show();
    }
}