MemorySort/监听Home键点击.java

package com.example.homedemo;

import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences.Editor;
import android.os.IBinder;
import android.widget.Toast;

public class HomeService extends Service{
	private HomeReceiver homeReceiver;
	private Intent newActivity;

	@Override
	public IBinder onBind(Intent intent) {
		// TODO Auto-generated method stub
		return null;
	}
	@Override
	public void onCreate() {
		super.onCreate();
		homeReceiver = new HomeReceiver();
		IntentFilter homeFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
		registerReceiver(homeReceiver, homeFilter);
	}
	
	/**
	 * ²¶»ñhome¼ü
	 * @author Administrator
	 *
	 */
	public class HomeReceiver extends BroadcastReceiver{
		final String SYSTEM_DIALOG_REASON_KEY = "reason";
		final String SYSTEM_DIALOG_REASON_HOME_KEY = "homekey";

		@Override
		public void onReceive(Context context, Intent intent) {
			String action = intent.getAction();
			if (action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)) {
				String reason = intent.getStringExtra(SYSTEM_DIALOG_REASON_KEY);
				if (reason != null && reason.equals(SYSTEM_DIALOG_REASON_HOME_KEY)) {
					Toast.makeText(getApplicationContext(), "²¶»ñµ½Home¼ü", 0).show();
					return;
				}
			}
		}

	}
	
	
	@Override
	public void onDestroy() {
		unregisterReceiver(homeReceiver);
		homeReceiver = null;
		super.onDestroy();
	}
	

}