//Android监听组合键

package com.fuwei.action;

import android.app.Activity;

import android.os.Bundle;

import android.view.KeyEvent;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.TextView;

import android.widget.Toast;

public class Main extends Activity {

    /** Called when the activity is first created. */

    @Override

    public void onCreate(Bundle savedInstanceState) {

       super.onCreate(savedInstanceState);

       setContentView(R.layout.main);

       onClickView();

    }

    @Override

    protected void onRestart() {

       // TODO Auto-generated method stub

       Toast.makeText(this, "Home", 1);

       super.onRestart();

    }

    public void onClickView() {

       TextView textView = (TextView) findViewById(R.id.linear);

       textView.setOnClickListener(new OnClickListener() {

        @Override

        public void onClick(View v) {

         v.setBackgroundColor(0xFF00FF00);

        }

       });

    }

    // @Override

    // public boolean onKeyDown(int keyCode, KeyEvent event) {

    // // TODO Auto-generated method stub

    // if(!event.isAltPressed()&&keyCode == KeyEvent.KEYCODE_A){

    // Toast.makeText(Main.this, "ALT + A", 0).show();

    // }

    // return super.onKeyDown(keyCode, event);

    // }

    // @Override

    // public boolean dispatchKeyEvent(KeyEvent event) {

    // // TODO Auto-generated method stub

    // //Alt Shift System 等键可以用is....判断是否为按下状态

    // if(event.isAltPressed()&&event.getKeyCode() == KeyEvent.KEYCODE_A){

    // Toast.makeText(Main.this, "ALT + A", 0).show();

    // }

    // return super.dispatchKeyEvent(event);

    // }

    boolean aIsDown = false;

    boolean qIsDown = false;

    @Override

    public boolean dispatchKeyEvent(KeyEvent event) {

       // TODO Auto-generated method stub

       // 判断普通按键

       int keyCode = event.getKeyCode();

       if (keyCode == KeyEvent.KEYCODE_A

         && event.getAction() == KeyEvent.ACTION_DOWN) {

        aIsDown = true;

       } else if (keyCode == KeyEvent.KEYCODE_Q

         && event.getAction() == KeyEvent.ACTION_DOWN) {

        qIsDown = true;

       }else if((keyCode == KeyEvent.KEYCODE_Q && !aIsDown)||(keyCode == KeyEvent.KEYCODE_A && !qIsDown)){

        aIsDown = false;

        qIsDown = false;

       }else if (aIsDown

         && qIsDown

         && (keyCode == KeyEvent.KEYCODE_Q || keyCode == KeyEvent.KEYCODE_A)

         && event.getAction() == KeyEvent.ACTION_UP) {

        Toast.makeText(Main.this, "Q + A", 0).show();

        aIsDown = false;

        qIsDown = false;

       }else{

        aIsDown = false;

        qIsDown = false;

       }

       return super.dispatchKeyEvent(event);

    }

}