监听home键+模拟home键

一、监听home键首先定义一个广播接受者

HomeKeyReceiver

package com.kale.floattest;

import com.kale.floattest.service.DrawService;

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

import android.util.Log;

public class HomeKeyReceiver extends BroadcastReceiver{

    static final String SYSTEM_REASON = "reason";

    static final String SYSTEM_HOME_KEY = "homekey";// home key

    static final String SYSTEM_RECENT_APPS = "recentapps";// long home key

    @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_REASON);

            if (reason != null) {

                if (reason.equals(SYSTEM_HOME_KEY)) {

                    Log.e("homekey", "home键被点击");

                    context.stopService(new Intent(context,DrawService.class));

                } else if (reason.equals(SYSTEM_RECENT_APPS)) {

                     Log.e("homekey", "长按home键");

                }

            }

        }

    }

}

这里的事件我写了关闭一个服务，当然大家可以自由发挥。下面是在服务中注册

    // 监听HOME键

    HomeKeyReceiver receiver;

@Override

    public void onCreate() {

        super.onCreate();

        // 注册监听home键广播

        receiver = new HomeKeyReceiver();

        registerReceiver(receiver, new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS));

}

@Override

    public void onDestroy() {

        super.onDestroy();

        //取消监听home键

            unregisterReceiver(receiver);

    }            

二、模拟home键（执行代码后就等于点击了home键）

    protected void virtualHome() {

        //模拟HOME键

        Intent i= new Intent(Intent.ACTION_MAIN);

        i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); //如果是服务里调用，必须加入new task标识

        i.addCategory(Intent.CATEGORY_HOME);

        startActivity(i);

    }