详解Android中Notification通知提醒

<LinearLayout 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"
 android:background="@android:color/black"
 android:orientation="vertical" >

 <TextView
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:gravity="center_horizontal"
  android:text="@string/title"
  android:textColor="#0f0"
  android:textSize="20sp"
  android:textStyle="bold" />

 <Button
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:layout_marginLeft="50dp"
  android:layout_marginRight="50dp"
  android:layout_marginTop="30dp"
  android:onClick="normal"
  android:text="@string/notification"
  android:textColor="#0f0"
  android:textSize="20sp" />

 <Button
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:layout_marginLeft="50dp"
  android:layout_marginRight="50dp"
  android:layout_marginTop="30dp"
  android:onClick="custom"
  android:text="@string/custom"
  android:textColor="#0f0"
  android:textSize="20sp" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:background="#000"
 android:orientation="vertical" >

 <ImageView
  android:id="@+id/iv"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:contentDescription="@string/action_settings"
  android:src="@drawable/ic_launcher" />

 <TextView
  android:id="@+id/tv"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:gravity="center_horizontal"
  android:textColor="#0f0"
  android:textSize="15sp" />

</LinearLayout>

package com.itfom.notification;

import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.widget.RemoteViews;

public class MainActivity extends Activity {

 private NotificationManager mNotificationManager;
 private Context context;
 private Notification notification;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 }

 //普通的通知
 @SuppressWarnings("deprecation")
 public void normal(View v){
 //创建通知
 createNotification("普通的通知");
 //把通知放在正在运行栏目中
 notification.flags|=Notification.FLAG_ONGOING_EVENT;
 //设定默认声音
 notification.defaults|=Notification.DEFAULT_SOUND;
 //设定默认震动
 notification.defaults|=Notification.DEFAULT_VIBRATE;
 //设定默认LED灯提醒
 notification.defaults|=Notification.DEFAULT_LIGHTS;
 //设置点击后通知自动清除
 notification.defaults|=Notification.FLAG_AUTO_CANCEL;

 String textTitle="Notification示例";
 String textContent="程序正在运行，点击此处跳转到演示界面";

 Intent it=new Intent(context, MainActivity.class);
 PendingIntent pendintent=PendingIntent.getActivity(context, 0, it, 0);
 notification.setLatestEventInfo(context, textTitle, textContent, pendintent);
 mNotificationManager.notify(0, notification);
 }

 //自定义的通知
 public void custom(View v){
 //创建通知
 createNotification("个性化的通知");
 //自定义通知的声音
 notification.sound=Uri.parse(Environment.getExternalStorageDirectory()+"/non.mp3");
 //自定义震动参数分别为多长时间开始震动、第一次震动的时间、停止震动的时间
 long[] vibrate={0,100,200,300};
 notification.vibrate=vibrate;
 //自定义闪光灯的方式
 notification.ledARGB=0xff00ff00;
 notification.ledOnMS=500;
 notification.ledOffMS=500;
 notification.flags|=Notification.FLAG_SHOW_LIGHTS;

 RemoteViews contentView=new RemoteViews(this.getPackageName(),R.layout.notify);
 contentView.setTextViewText(R.id.tv, "这是个性化的通知");
 //指定个性化的视图
 notification.contentView=contentView;
 Intent it=new Intent(context, MainActivity.class);
 PendingIntent pendintent=PendingIntent.getActivity(context, 0, it, 0);
 //指定内容视图
 notification.contentIntent=pendintent;
 mNotificationManager.notify(1, notification);
 }
 //自定义一个方法创建通知
 @SuppressWarnings("deprecation")
 public Notification createNotification(String text){
 context = this;
 mNotificationManager=(NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE);
 int icon=R.drawable.ic_launcher;
 long when=System.currentTimeMillis();
 return notification = new Notification(icon, text, when);
 }

 //重写onBackpressed事件
 @Override
 public void onBackPressed() {
 super.onBackPressed();
 finish();
 //取消通知
 mNotificationManager.cancel(0);
 android.os.Process.killProcess(android.os.Process.myPid());
 System.exit(0);
 }
}