Android 捕获组合键

android中捕获组合键
http://blog.csdn.net/wenlibin1985/article/details/5579359

Android组合键
http://www.eoeandroid.com/thread-162824-1-1.html

Sample Code:

//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);
    }
}