Android不同版本下Notification创建方法

项目环境

Project Build Target：Android 6.0

问题：

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 "

源码如下：

 /**
 * 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”！

查看源码：

 /**
 * 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);
 }

setLatestEventInfo方法已被removed。