{"id":7565,"date":"2013-12-16T12:00:00","date_gmt":"2013-12-16T10:00:00","guid":{"rendered":"http:\/\/examples.javacodegeeks.com\/?p=7565"},"modified":"2013-12-16T00:12:43","modified_gmt":"2013-12-15T22:12:43","slug":"android-notifications-example","status":"publish","type":"post","link":"https:\/\/examples.javacodegeeks.com\/android\/core\/ui\/notifications\/android-notifications-example\/","title":{"rendered":"Android Notifications Example"},"content":{"rendered":"

Notification<\/code><\/a> is a message that doesn’t appear inside the main UI of the app but as an icon in the notification area, including more details in the notification drawer. The aim of the notifications is to keep the user informed about events or alerts in a more persistent method, as the user can view them at any time. In this tutorial, we will create two different Notifications<\/code>, the first one with normal view and the second one with big view, using explicit<\/code> and implicit<\/code> Intents<\/code> respectively.
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\nFor this tutorial, we will use the following tools in a Windows 64-bit platform:<\/p>\n

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  1. JDK 1.7<\/li>\n
  2. Eclipse 4.2 Juno<\/li>\n
  3. Android SDK 4.4<\/li>\n<\/ol>\n

    1. Create a New Android Application Project<\/h2>\n

    Open Eclipse IDE and go to File \u2192 New \u2192 Project \u2192 Android Application Project.<\/p>\n

    Specify the name of the application, the project and the package. Then, choose as \u201cMinimum Required SDK\u201d the API 17 or larger and click Next.<\/p>\n

    \"NotifProject1\"<\/a><\/p>\n

    In the next window, the \u201cCreate Activity\u201d option should be checked. The new created activity will be the main activity of your project. Then press Next button.<\/p>\n

    \"NotifProject2\"<\/a><\/p>\n

    In \u201cConfigure Launcher Icon\u201d window you should choose the icon you want to have in your app. We will use the default icon of android, so click Next.<\/p>\n

    \"createProject3!\"<\/a><\/p>\n

    Select the \u201cBlank Activity\u201d option and press Next.<\/p>\n

    \"createProject4!\"<\/a><\/p>\n

    You have to specify a name for the new Activity and a name for the layout description of your app. The .xml file for the layout will automatically be created in the\u00a0res\/layout\u00a0folder<\/code>. Finally, press Finish.<\/p>\n

    \"createProject5!\"<\/a><\/p>\n

    Now that the project is created, you can see the final structure of the project in the image below.<\/p>\n

    \"NotifProjectFull\"<\/a><\/p>\n

    2. Create the layout of the Main Activity<\/h2>\n

    As we said above, we want to define two different Notifications<\/code>, so we are going to add two Buttons<\/code>, that each one enables the respective notification<\/code>.<\/p>\n

    Open res\/layout\/activity_main.xml<\/code> file, go to the xml tab and paste the following code.<\/p>\n

    activity_main.xml:<\/u><\/em><\/p>\n

    \r\n<RelativeLayout xmlns:android=\"http:\/\/schemas.android.com\/apk\/res\/android\"\r\n    xmlns:tools=\"http:\/\/schemas.android.com\/tools\"\r\n    android:layout_width=\"match_parent\"\r\n    android:layout_height=\"match_parent\"\r\n    tools:context=\".MainActivity\" >\r\n\r\n   <Button \r\n        android:id=\"@+id\/notificationOne\"\r\n   \t\tandroid:layout_width=\"fill_parent\"\r\n   \t\tandroid:layout_height=\"wrap_content\"\r\n   \t\tandroid:text=\"start notification one\" \/>\r\n\r\n   <Button\r\n       android:id=\"@+id\/notificationTwo\"\r\n       android:layout_width=\"fill_parent\"\r\n       android:layout_height=\"wrap_content\"\r\n       android:layout_alignParentLeft=\"true\"\r\n       android:layout_alignParentTop=\"true\"\r\n       android:layout_marginTop=\"60dp\"\r\n       android:text=\"start notification two\" \/>\r\n\r\n<\/RelativeLayout>\r\n<\/pre>\n
    3. Code the Main Activity<\/h2>\n
    To facilitate the display of layout and the control of the actions of notifications, a NotificationCompat.Builder<\/code><\/a> object is used. Every Notification<\/code><\/a> object have to contain:<\/p>\n