android中如何点击通知定位到指定的activity

private void initNotification() {
		mState = STATE_EXITED;
		mHungup = mContext.getResources().getString(R.string.hungup);
		mPlaying = mContext.getResources().getString(R.string.signalPrompt);
		if (null == mNM) {
			mNM = (NotificationManager) mContext
					.getSystemService(Context.NOTIFICATION_SERVICE);
		}

		if (null == mNotification) {
			mNotification = new Notification();
			mNotification.flags = Notification.FLAG_NO_CLEAR;
		}
		setRemoteActivity(LAUNCHER);
		setContentView();
	}



/*
	 * set the activity to go when click the item in the notification area.
	 */
	public void setRemoteActivity(String launcher) {
		ComponentName comp = new ComponentName(PKGNAME, PKGNAME + launcher);
		Intent notificationIntent = new Intent();
		notificationIntent.setComponent(comp);
		if (launcher.equals(LAUNCHER)) {
			notificationIntent.addCategory("android.intent.category.LAUNCHER");
			notificationIntent.setAction("android.intent.action.MAIN");
			notificationIntent.setFlags(0x10200000);
		} else {
			notificationIntent.putExtra(Define.INTENT_CHANNEL_POSITION,
					MBBMSService.sCurrentPlayPosition);
			notificationIntent.setAction(Action.ACTION_VIEW_PROGRAM_ACTION);
		}
		mNotification.contentIntent = PendingIntent.getActivity(mContext, 0,
				notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);
	}

	private void setContentView() {
		mContentView = new RemoteViews(mContext.getPackageName(),
				R.layout.status_bar_signal);
		mContentView.setTextViewText(R.id.text, mPlaying);
		mContentView.setImageViewResource(R.id.icon, R.drawable.icon_tvplayer);
		mNotification.contentView = mContentView;
	}

 

   方法setRemoteActivity里面使得后台运行的应用显示到主界面上，同时使得最后一次运行的activity显示在activity堆栈的最上面