【转】【Android】Android不同版本下Notification创建方法

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使用 new Notification(int icon, CharSequence tickerText, long when)构造函数时，Eclipse却提示：" The constructor Notification(int, CharSequence, long) is deprecated "

/**

* Constructs a Notification object with the information needed to

* have a status bar icon without the standard expanded view.

*

* @param icon The resource id of the icon to put in the status bar.

* @param tickerText The text that flows by in the status bar when the notification first

* activates.

* @param when The time to show in the time field. In the System.currentTimeMillis

* timebase.

*

* @deprecated Use {@link Builder} instead.

*/

@Deprecated

public Notification(int icon, CharSequence tickerText, long when)

{

　　this.icon = icon;

　　this.tickerText = tickerText;

　　this.when = when;

}

在不同的版本下Notification使用有一些不同，涉及到Builder的使用。现在总结如下，希望对以后使用的程序员有所帮助。

低于API Level 11版本，也就是Android 2.3.3以下的系统中，setLatestEventInfo()函数是唯一的实现方法。前面的有关属性设置这里就不再提了，网上资料很多。

Intent  intent = new Intent(this,MainActivity);

PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, PendingIntent.FLAG_ONE_SHOT);

notification.setLatestEventInfo(context, title, message, pendingIntent);

manager.notify(id, notification);

高于API Level 11，低于API Level 16 (Android 4.1.2)版本的系统中，可使用Notification.Builder来构造函数。但要使用getNotification()来使notification实现。此时，前面版本在notification中设置的Flags，icon等属性都已经无效，要在builder里面设置。

Notification.Builder builder = new Notification.Builder(context)

            .setAutoCancel(true)

            .setContentTitle("title")

            .setContentText("describe")

            .setContentIntent(pendingIntent)

            .setSmallIcon(R.drawable.ic_launcher)

            .setWhen(System.currentTimeMillis())

            .setOngoing(true);

notification=builder.getNotification();

高于API Level 16的版本，就可以用Builder和build()函数来配套的方便使用notification了。

Notification notification = new Notification.Builder(context)

         .setAutoCancel(true)

         .setContentTitle("title")

         .setContentText("describe")

         .setContentIntent(pendingIntent)

         .setSmallIcon(R.drawable.ic_launcher)

         .setWhen(System.currentTimeMillis())

         .build();

【注意点】：
在构造notification的时候有很多种写法，但是要注意，用
Notification notification = new Notification();
这种构建方法的时候，一定要加上notification.icon这个设置，不然，程序虽然不会报错，但是会没有效果。

问题：

使用了Notification下的setLatestEventInfo()方法时，Eclipse却提示：“ The method setLatestEventInfo(Context, String, String, PendingIntent) is undefined for the type Notification”！

/**

* Sets the {@link #contentView} field to be a view with the standard "Latest Event"

* layout.

*

* <p>Uses the {@link #icon} and {@link #when} fields to set the icon and time fields

* in the view.</p>

* @param context The context for your application / activity.

* @param contentTitle The title that goes in the expanded entry.

* @param contentText The text that goes in the expanded entry.

* @param contentIntent The intent to launch when the user clicks the expanded notification.

* If this is an activity, it must include the

* {@link android.content.Intent#FLAG_ACTIVITY_NEW_TASK} flag, which requires

* that you take care of task management as described in the

* <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back

* Stack</a> document.

*

* @deprecated Use {@link Builder} instead.

* @removed

*/

@Deprecated

public void setLatestEventInfo(Context context,

CharSequence contentTitle, CharSequence contentText, PendingIntent contentIntent) {

Notification.Builder builder = new Notification.Builder(context);

// First, ensure that key pieces of information that may have been set directly

// are preserved

builder.setWhen(this.when);

builder.setSmallIcon(this.icon);

builder.setPriority(this.priority);

builder.setTicker(this.tickerText);

builder.setNumber(this.number);

builder.setColor(this.color);

builder.mFlags = this.flags;

builder.setSound(this.sound, this.audioStreamType);

builder.setDefaults(this.defaults);

builder.setVibrate(this.vibrate);

builder.setDeleteIntent(this.deleteIntent);

// now apply the latestEventInfo fields

if (contentTitle != null) {

builder.setContentTitle(contentTitle);

}

if (contentText != null) {

builder.setContentText(contentText);

}

builder.setContentIntent(contentIntent);

builder.buildInto(this);

}