1.代码：

Activity：

package com.vanceinfo.KeyEvent;

 

import android.app.Activity;

import android.os.Bundle;

import android.view.KeyEvent;

import android.view.MotionEvent;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.Toast;

 

public class KeyEventActivity extends Activity

{

    private Button button;

 

    @Override

    public void onCreate(Bundle savedInstanceState)

    {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        button = (Button) findViewById(R.id.ok_button);

        button.setOnClickListener(listener);

    }

 

    OnClickListener listener = new OnClickListener()

    {

        @Override

        public void onClick(View v)

        {

            DisplayToast("点击了OK！");

        }

    };

 

    public boolean onKeyDown(int keyCode, KeyEvent event)

    {

        switch (keyCode)

        {

            case KeyEvent.KEYCODE_DPAD_CENTER:

                DisplayToast("按下：中间键");

                break;

            case KeyEvent.KEYCODE_DPAD_UP:

                DisplayToast("按下：向上键");

                break;

            case KeyEvent.KEYCODE_DPAD_DOWN:

                DisplayToast("按下：向下键");

                break;

            case KeyEvent.KEYCODE_DPAD_LEFT:

                DisplayToast("按下：左方向键");

                break;

            case KeyEvent.KEYCODE_DPAD_RIGHT:

                DisplayToast("按下：有方向键");

                break;

            default:

                break;

        }

        return super.onKeyDown(keyCode, event);

    }

 

    public boolean onKeyUp(int keyCode, KeyEvent event)

    {

        switch (keyCode)

        {

            case KeyEvent.KEYCODE_DPAD_CENTER:

                DisplayToast("弹起：中间键");

                break;

            case KeyEvent.KEYCODE_DPAD_DOWN:

                DisplayToast("弹起：向下键");

                break;

            case KeyEvent.KEYCODE_DPAD_LEFT:

                DisplayToast("弹起：向左键");

                break;

            case KeyEvent.KEYCODE_DPAD_RIGHT:

                DisplayToast("弹起：向右键");

                break;

            case KeyEvent.KEYCODE_DPAD_UP:

                DisplayToast("弹起：向上键");

                break;

        }

        return super.onKeyDown(keyCode, event);

    }

 

    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event)

    {

        return super.onKeyMultiple(keyCode, repeatCount, event);

    }

 

    public boolean onTouchEvent(MotionEvent event)

    {

        int iAction = event.getAction();

        if (iAction == MotionEvent.ACTION_CANCEL || iAction == MotionEvent.ACTION_DOWN

                || iAction == MotionEvent.ACTION_MOVE)

        {

            return false;

        }

        int x = (int) event.getX();

        int y = (int) event.getY();

        DisplayToast("触笔点击坐标:(" + Integer.toString(x) + "," + Integer.toString(y) + ")");

        return super.onTouchEvent(event);

    }

    public void DisplayToast(String str)

    {

        Toast.makeText(this, str, Toast.LENGTH_SHORT).show();

    }

}

2.效果图：
http://s7/middle/883d8fb8na9a5a0ee2126&690

http://s13/middle/883d8fb8na9a5a175ac4c&690

http://s12/middle/883d8fb8na9a5a181ba3b&690

http://s7/middle/883d8fb8na9a5a203fd26&690