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ANDRIID TUTORIAL


Android Tutorial for beginner


A notification is a message that shows Android outside your app's UI so that the user can be reminded, communicate with other people, or provide other timely information from your app.

Users can tap a notification to open your app or take action directly from the notification.
This page provides an overview of where notifications appear and features available.
If you want to get started building your notifications, read Create Alert instead.
See the Information Design Guide for more information on design and interaction patterns.

Additionally, notifications in both Android and the notification app.
Check out the Android notification pattern to demonstrate best practices for using the Style API.

Notifications appear to users in a variety of locations and formats, such as an icon in the status bar, more detailed entry in the notification drawer, a badge on the

The notification icons appear on the left side of the status bar
Users can swap to the status bar to open the notification drawer, where they can see more details and take action with the notification.
Users can drag down the drawer notification to display the expanded view, which shows the additional content and action buttons provided.
The notification appears in the notification drawer until rejected by the application or user.

Starting with Android 5.0, notifications can appear briefly in the floating window called Headup Notifications.

This behavior is typically intended for important notifications that the user should immediately know about, and only appears when the device is unlocked.
A headup notification appears in front of a preview app
The headup notification appears only when your app releases a notification and disappears after a moment, but normally appears in the notification drawer.
Examples of situations that might trigger headline notifications include the following:
User activity is in fullscreen mode (the app uses full screen intents).

This notification is a high priority and ringtones or vibrations are used on devices running Android 7.1 (API level 25) and lower.
The notification channel places more importance on devices running Android 8.0 (API level 26) and higher.

Starting with Android 5.0, notifications can appear on the lock screen.
You can programmatically adjust the level of detail that appears in notifications posted by your app on a secure lock screen, or even if the notification appears on the lock
Users can use the system settings to select the level of detail that appears in Lock Screen notifications, including the option to disable all lock screen notifications, starting with Android
8.0, the user can lock for each notification channel.
You can choose to disable or disable screen notifications.
Notifications on lock screen with sensitive content hidden
See Learn more about how to set up a lock screen display.
In supported launchers on devices running Android 8.0 (API level 26) and above, the app icons point to a new notification with a colorful "badge" (also known as "notification dot")
Users can long press on the app's icon to see this app's notifications.
Users can then dismiss this menu's notifications or act like a notification drawer.
To learn more about how badges work, read Information Badges.
If the user has a paired OS device, all your notifications are displayed automatically, including expandable details and an action button.
You can also enhance the experience by customizing some exhibits to report wearables and provide a number of steps, including suggested responses and voice input responses.
For more information, see How to add unique wearables to your notifications.
Notifications automatically appear on a paired OS device


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