通知类工具类

新人学习，仅供参考！
package com.example.administrator.settingactivity.util;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.net.Uri;
import android.provider.MediaStore;
import android.widget.RemoteViews;

import com.example.administrator.settingactivity.R;
import com.example.administrator.settingactivity.activity.HelpActivity;

/**
 * Created by Administrator on 2017/1/10.
 */

public class NotificationUtil {
    //通知管理类
    private static NotificationManager manager;
    //通知
    private static Notification notification;
    //id
    private static final int ID=1;
    //是否开启通知
    public static boolean isOpenNotification(Context context){
        SharedPreferences sharedPreferences=context.getSharedPreferences("notification",context.MODE_PRIVATE);

        return sharedPreferences.getBoolean("open",true);
    }
    /**
     * 记录通知开启状态    重要记住部分
     */
    public static void setOpenNotification(Context context,boolean open){
        SharedPreferences sharedPreferences=context.getSharedPreferences("notification",context.MODE_PRIVATE);
        SharedPreferences.Editor editor=sharedPreferences.edit();
        editor.putBoolean("open",open);
        editor.commit();
    }

    /**
     * 取消通知
     */
    public static void cancle(Context context) {
        if(manager==null){
            manager= (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
        }
        manager.cancel(ID);

    }


    /**
     * 显示通知
     */
    public static void showNotification(Context context) {

        if (notification==null){
            notification = new Notification();//初始化
        }
        //标志
        notification.flags=Notification.FLAG_NO_CLEAR;
        //图标
        notification.icon= R.mipmap.ic_launcher;
        //提示内容
        notification.tickerText="新消息";
        //声音
        notification.sound= Uri.withAppendedPath(MediaStore.Audio.Media.INTERNAL_CONTENT_URI,"6");
        //震动
        notification.defaults |=Notification.DEFAULT_VIBRATE;
        notification.when = System.currentTimeMillis();
        //加载布局
        notification.contentView = new RemoteViews(context.getPackageName(),R.layout.layout_notification_appincon);
        //点击方式
        notification.contentIntent= PendingIntent.getActivity(context,1,new Intent(context,HelpActivity.class),PendingIntent.FLAG_UPDATE_CURRENT);
        //获取通知
        if (manager==null){
            manager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
        }
        manager.notify(ID,notification);

    }
    }