Android监听home键

 /**
     *
     * 监听Home键
     */
    private BroadcastReceiver mHomeKeyEventReceiver = new BroadcastReceiver() {
        String SYSTEM_REASON = "reason";
        String SYSTEM_HOME_KEY = "homekey";
        String SYSTEM_HOME_KEY_LONG = "recentapps";

        @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 (TextUtils.equals(reason, SYSTEM_HOME_KEY)) {
                    //表示按了home键,程序到了后台
                    AppConfigManager.getInstance().setLastIsPlayFlag((mFgPlayer != null) ? mFgPlayer.isPlaying() : false);
                }else if(TextUtils.equals(reason, SYSTEM_HOME_KEY_LONG)){
                    //表示长按home键,显示最近使用的程序列表
                }
            }
        }
    };

记得注册广播：

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