NotificationsEnablerInstaller

```
public interface NotificationsEnablerInstaller
```
Enabler for checking and updating Notification Enabler, if available

This interface is meant for checking Notification Enabler availability and for handling downloading, installation and launching of the enabler if an update is required.
During startup, MIDlet calls checkAndUpdateNapiEnabler(InstallListener, Displayable, MIDlet) before trying to use the Nokia Notifications API
Enabler is pre-installed in Nokia Asha SDK 3.0.
The result InstallListener.ALREADY_EXISTS is returned to the InstallListener.installResult(int) callback
MIDlet can start using the Nokia Notifications API

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`cancel()` This API cancels the update process.
`void`	`checkAndUpdateNapiEnabler(InstallListener listener, Displayable nextDisplayable, MIDlet midlet)` Checks if the Notification Enabler available and if the version is up-to-date.In case, update for the Notification Enabler is available, it will trigger the update process.
`void`	`checkNapiEnabler(InstallListener listener, MIDlet midlet)` Checks if the Notification Enabler available and if the version is up-to-date.
`void`	`showInstallerSoftNotification(Display display)` This API has no effect on Nokia SDK 3.0.
`void`	`updateNapiEnabler(InstallListener listener, Displayable nextDisplayable, MIDlet midlet)` Updates Notification Enabler to latest available version.

- Method Detail
  - checkAndUpdateNapiEnabler
```
void checkAndUpdateNapiEnabler(InstallListener listener,
                             Displayable nextDisplayable,
                             MIDlet midlet)
```
    Checks if the Notification Enabler available and if the version is up-to-date.In case, update for the Notification Enabler is available, it will trigger the update process.
    
    NOTE: This function will always give result in callback InstallListener.installResult(int).
    
    Parameters:
    listener - Listener for receiving install result
    nextDisplayable - This displayable will be shown if update procedure starts but ends in error. If null, then installer will use a temporary displayable.
    midlet - The application MIDlet
  - checkNapiEnabler
```
void checkNapiEnabler(InstallListener listener,
                    MIDlet midlet)
```
    Checks if the Notification Enabler available and if the version is up-to-date.
    
    NOTE: This function will always give result in callback InstallListener.installResult(int).
    
    Parameters:
    listener - Listener for receiving checking result
    midlet - The application MIDlet
  - showInstallerSoftNotification
```
void showInstallerSoftNotification(Display display)
```
    This API has no effect on Nokia SDK 3.0. It is for backward compability with Series 40 devices.
    
    Parameters:
    display - Display of the MIDlet.
  - updateNapiEnabler
```
void updateNapiEnabler(InstallListener listener,
                     Displayable nextDisplayable,
                     MIDlet midlet)
```
    Updates Notification Enabler to latest available version.
    NOTE: This function will always give result in callback InstallListener.installResult(int).
    
    Parameters:
    listener - Listener for receiving install result
    nextDisplayable - This displayable will be shown if update procedure starts but ends in error. If null, then installer will use a temporary displayable.
    midlet - The application MIDlet
  - cancel
```
void cancel()
```
    This API cancels the update process.

Interface NotificationsEnablerInstaller

Enabler for checking and updating Notification Enabler, if available

Method Summary

Method Detail

checkAndUpdateNapiEnabler

checkNapiEnabler

showInstallerSoftNotification

updateNapiEnabler

cancel