<Notification>的功能与方法

package com.crazyit.ui.notificationdemo;

import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;

/**
 * 通知的功能与简单用法
 */
public class NotificationActivity extends AppCompatActivity {

    public static int NOTIFITION_ID = 0x123;
    NotificationManager manager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_notification);

        //获取系统服务 NotificationManager
        manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    }

    // 发送通知的按钮的点击事件
    public void send(View v) {

        //创建一个 Intent
        Intent intent = new Intent(NotificationActivity.this, OtherActivity.class);
        PendingIntent pi = PendingIntent.getActivity(NotificationActivity.this, 0, intent, 0);

        Notification notification = new Notification.Builder(this)
                .setAutoCancel(true)  // 设置打开通知之后,自动消失
                .setTicker("有新消息")   //设置显示在状态栏的 通知提示消息
                .setSmallIcon(R.mipmap.ic_launcher) //设置通知的图标
                .setContentTitle("一条心通知") //设置通知内容的 标题
                .setContentText("恭喜你.涨工资啦!转正啦!")  //设置通知内容
                        //设置使用系统默认的声音,默认的 LED灯
                .setDefaults(Notification.DEFAULT_SOUND | Notification.DEFAULT_LIGHTS)
                .setSound(Uri.parse("android.resourse://org.crazy.ui/" + R.raw.msg))
                .setWhen(System.currentTimeMillis())
                .setContentIntent(pi).build();

        //发送通知
        manager.notify(NOTIFITION_ID,notification);

    }

    //为删除的按钮添加点击事件
    public void del(View view){
        manager.cancel(NOTIFITION_ID);
    }
}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"

    tools:context="com.crazyit.ui.notificationdemo.NotificationActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!"
        android:id="@+id/textView" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="发送"
        android:id="@+id/button"
        android:layout_below="@+id/textView"
        android:layout_alignParentStart="true"
        android:onClick="send"
        android:layout_marginStart="36dp"
        android:layout_marginTop="125dp" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="删除"
        android:id="@+id/button2"
        android:onClick="del"
        android:layout_centerVertical="true"
        android:layout_alignStart="@+id/button" />
</RelativeLayout>
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