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【android】Notification和NotificationManager 类的属性详解与使用示例

时间:12-12-10 栏目:Android类详解与使用示例 作者:魔豆先生 评论:0 点击: 3,998 次

(1)、使用系统定义的Notification的属性与字段

通过以下示例代码进行属性和字段的介绍:

//创建一个NotificationManager的引用

String ns = Context.NOTIFICATION_SERVICE;

NotificationManager mNotificationManager = (NotificationManager)getSystemService(ns);

//定义Notification的各种属性

int icon = R.drawable.icon; //通知图标

CharSequence tickerText = "Hello"; //状态栏显示的通知文本提示

long when = System.currentTimeMillis(); //通知产生的时间,会在通知信息里显示

//用上面的属性初始化Nofification

Notification notification = new Notification(icon,tickerText,when);

 

/*

* 添加声音

* notification.defaults |=Notification.DEFAULT_SOUND;

* 或者使用以下几种方式

* notification.sound = Uri.parse("file:///sdcard/notification/ringer.mp3");

* notification.sound = Uri.withAppendedPath(Audio.Media.INTERNAL_CONTENT_URI, "6");

* 如果想要让声音持续重复直到用户对通知做出反应,则可以在notification的flags字段增加"FLAG_INSISTENT"

* 如果notification的defaults字段包括了"DEFAULT_SOUND"属性,则这个属性将覆盖sound字段中定义的声音

*/

 

/*

* 添加振动

* notification.defaults |= Notification.DEFAULT_VIBRATE;

* 或者可以定义自己的振动模式:

* long[] vibrate = {0,100,200,300}; //0毫秒后开始振动,振动100毫秒后停止,再过200毫秒后再次振动300毫秒

* notification.vibrate = vibrate;

* long数组可以定义成想要的任何长度

* 如果notification的defaults字段包括了"DEFAULT_VIBRATE",则这个属性将覆盖vibrate字段中定义的振动

*/

 

/*

* 添加LED灯提醒

* notification.defaults |= Notification.DEFAULT_LIGHTS;

* 或者可以自己的LED提醒模式:

* notification.ledARGB = 0xff00ff00;

* notification.ledOnMS = 300; //亮的时间

* notification.ledOffMS = 1000; //灭的时间

* notification.flags |= Notification.FLAG_SHOW_LIGHTS;

*/

 

/*

* 更多的特征属性

* notification.flags |= FLAG_AUTO_CANCEL; //在通知栏上点击此通知后自动清除此通知

* notification.flags |= FLAG_INSISTENT; //重复发出声音,直到用户响应此通知

* notification.flags |= FLAG_ONGOING_EVENT; //将此通知放到通知栏的"Ongoing"即"正在运行"组中

* notification.flags |= FLAG_NO_CLEAR; //表明在点击了通知栏中的"清除通知"后,此通知不清除,

* //经常与FLAG_ONGOING_EVENT一起使用

* notification.number = 1; //number字段表示此通知代表的当前事件数量,它将覆盖在状态栏图标的顶部

* //如果要使用此字段,必须从1开始

* notification.iconLevel = ; //

*/

 

//设置通知的事件消息

Context context = getApplicationContext(); //上下文

CharSequence contentTitle = "My Notification"; //通知栏标题

CharSequence contentText = "Hello World!"; //通知栏内容

Intent notificationIntent = new Intent(this,Main.class); //点击该通知后要跳转的Activity

PendingIntent contentIntent = PendingIntent.getActivity(this,0,notificationIntent,0);

notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);

 

//把Notification传递给NotificationManager

mNotificationManager.notify(0,notification);

 

如果需要更新一个通知,(1) 设置好notification,(2) 调用 setLatestEventInfo(),(3) 调用notify() 发送一次通知。

(2)、使用自定义的Notification

要创建一个自定义的Notification,可以使用RemoteViews。要定义自己的扩展消息,首先要初始化一个RemoteViews对象,然后将它传递给Notification的contentView字段,再把PendingIntent传递给contentIntent字段。以下示例代码是完整步骤:

//1、创建一个自定义的消息布局 view.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="fill_parent" android:layout_height="fill_parent">

<ImageView android:id="@+id/image" android:layout_width="wrap_content"

android:layout_height="fill_parent" android:layout_marginRight="10dp" />

<TextView android:id="@+id/text" android:layout_width="wrap_content"

android:layout_height="fill_parent" android:textColor="#000" />

</LinearLayout>

 

//2、在程序代码中使用RemoteViews的方法来定义image和text。然后把RemoteViews对象传到contentView字段

RemoteViews contentView = new RemoteViews(getPackageName(),R.layout.view);

contentView.setImageViewResource(R.id.image,R.drawable.icon);

contentView.setTextViewText(R.id.text,”Hello,this message is in a custom expanded view”);

notification.contentView = contentView;

 

//3、为Notification的contentIntent字段定义一个Intent(注意,使用自定义View不需要setLatestEventInfo()方法)

Intent notificationIntent = new Intent(this,Main.class);

PendingIntent contentIntent = PendingIntent.getActivity(this,0,notificationIntent,0);

notification.contentIntent = contentIntent;

 

//4、发送通知

mNotificationManager.notify(2,notification);

 

【示例代码】

//创建一个NotificationManager的引用

String ns = Context.NOTIFICATION_SERVICE;

NotificationManager mNotificationManager = (NotificationManager)getSystemService(ns);

 

//定义Notification的各种属性

int icon = R.drawable.icon; //通知图标

CharSequence tickerText = "Hello"; //状态栏显示的通知文本提示

long when = System.currentTimeMillis(); //通知产生的时间,会在通知信息里显示

 

//用上面的属性初始化Nofification

Notification notification = new Notification(icon,tickerText,when);

RemoteViews contentView = new RemoteViews(getPackageName(),R.layout.view);

contentView.setImageViewResource(R.id.image, R.drawable.iconempty);

contentView.setTextViewText(R.id.text, "Hello,this is JC");

notification.contentView = contentView;

 

Intent notificationIntent = new Intent(this,Main.class);

PendingIntent contentIntent = PendingIntent.getActivity(this,0,notificationIntent,0);

notification.contentIntent = contentIntent;

 

//把Notification传递给NotificationManager

mNotificationManager.notify(0,notification);

 

 

(3)、Notification 裸示例代码:
 

public class Activity01 extends Activity

{

Button    m_Button1, m_Button2, m_Button3, m_Button4;

//声明通知(消息)管理器

       NotificationManager      m_NotificationManager;

       Intent                           m_Intent;

       PendingIntent        m_PendingIntent;

       //声明Notification对象

       Notification           m_Notification;

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

//初始化NotificationManager对象

              m_NotificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

//获取4个按钮对象

m_Button1 = (Button) findViewById(R.id.Button01);

m_Button2 = (Button) findViewById(R.id.Button02);

m_Button3 = (Button) findViewById(R.id.Button03);

m_Button4 = (Button) findViewById(R.id.Button04);

  //点击通知时转移内容

              m_Intent = new Intent(Activity01.this, Activity02.class);

              //主要是设置点击通知时显示内容的类

              m_PendingIntent = PendingIntent.getActivity(Activity01.this, 0, m_Intent, 0);

              //构造Notification对象

              m_Notification = new Notification();

m_Button1.setOnClickListener(new Button.OnClickListener() {

public void onClick(View v)

{

//设置通知在状态栏显示的图标

                            m_Notification.icon = R.drawable.img1;

                            //当我们点击通知时显示的内容

                            m_Notification.tickerText = "Button1通知内容...........";

                            //通知时发出默认的声音

                            m_Notification.defaults = Notification.DEFAULT_SOUND;

                            //设置通知显示的参数

                            m_Notification.setLatestEventInfo(Activity01.this, "Button1", "Button1通知", m_PendingIntent);

                            //可以理解为执行这个通知

                            m_NotificationManager.notify(0, m_Notification);

}

});

m_Button2.setOnClickListener(new Button.OnClickListener() {

public void onClick(View v)

{

m_Notification.icon = R.drawable.img2;

m_Notification.tickerText = "Button2通知内容...........";

//通知时震动

                            m_Notification.defaults = Notification.DEFAULT_VIBRATE;

m_Notification.setLatestEventInfo(Activity01.this, "Button2", "Button2通知", m_PendingIntent);

m_NotificationManager.notify(0, m_Notification);

}

});

m_Button3.setOnClickListener(new Button.OnClickListener() {

public void onClick(View v)

{

m_Notification.icon = R.drawable.img3;

m_Notification.tickerText = "Button3通知内容...........";

 //通知时屏幕发亮

                            m_Notification.defaults = Notification.DEFAULT_LIGHTS;

m_Notification.setLatestEventInfo(Activity01.this, "Button3", "Button3通知", m_PendingIntent);

m_NotificationManager.notify(0, m_Notification);

}

});

m_Button4.setOnClickListener(new Button.OnClickListener() {

public void onClick(View v)

{

m_Notification.icon = R.drawable.img4;

m_Notification.tickerText = "Button4通知内容..........";

//通知时既震动又屏幕发亮还有默认的声音

                            m_Notification.defaults = Notification.DEFAULT_ALL;

m_Notification.setLatestEventInfo(Activity01.this, "Button4", "Button4通知", m_PendingIntent);

m_NotificationManager.notify(0, m_Notification);

}

});

}

}

 

 

【android】Notification和NotificationManager 类的属性详解与使用示例:等您坐沙发呢!

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