Notificatin 使用

Notificatin

[功能]
左上角的那个信息提示 可以弹出一些信息 比如 状态更新 或 其他


[思路]
1.  得到NotificationManager 用于把Notification抛出
2. 构造一个Notification 设定与Notification相关的信息 包括2个方面：左上角提示信息 和 Expanded 信息

[实现]
1. 得到NotificationManager的实例 用于抛出Notification

NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

2. 构造一个Notification 并传入一些信息 比如 图标 文字 弹出时间

int icon = R.drawable.icon;
        CharSequence tickerText = "HelloNotfication";
        long when = System.currentTimeMillis();
        Notification notification = new Notification(icon, tickerText, when);;
        notification.defaults=Notification.DEFAULT_SOUND;

3. 设定Notification的expand 信息 可通过 HOMR->MENU->Notification 查看

//to definition some vale in Expanded view
        CharSequence contentTitle = "Notification's title @ Expanded view";  // expanded message title
        CharSequence contentText = "Notification's text @ Expanded view";      // expanded message text
        //to definition an Intent that this Notification listener in Expanded view via clicked action
        Intent notificationIntent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel://110"));
        PendingIntent contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
        notification.setLatestEventInfo(this, contentTitle, contentText, contentIntent);

4. 抛出Notification.

manager.notify(1, notification);

5. 定制Expand 信息也是可以的
× 定制目标的 custom_notification_layout.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="horizontal"
              android:layout_width="fill_parent"
              android:layout_height="fill_parent"
              android:padding="3dp"
              >
    <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>

× 设定一些使用信息 比如 文章内容

// to customize its Expanded view via XML file
RemoteViews contentView = new RemoteViews(getPackageName(), R.layout.custom_notification_layout);
contentView.setImageViewResource(R.id.image, R.drawable.msn);

// to specific the text in Expanded view
contentView.setTextViewText(R.id.text, "Hello, this is Expanded view with custom XML");

notification.contentView = contentView;

其他信息稍后补充 比如 Notification弹出的地方 Expand地方!