Local Notifications in Ionic

In ionic 3 the local notifications have some 6 major issues in android/plugin/de/notification .
app can not be build.

What are those?

Why? What error message are you getting?

What is your ionic info output?



:compileDebugJavaWithJavac - is not incremental (e.g. outputs have changed, no previous execution, etc.).
G:\ionic\dexterio\platforms\android\src\de\appplant\cordova\plugin\notification\Manager.java:24: error: cannot find symbol
import android.app.NotificationChannel;
                  ^
  symbol:   class NotificationChannel
  location: package android.app
G:\ionic\dexterio\platforms\android\src\de\appplant\cordova\plugin\notification\Manager.java:41: error: cannot find symbol
import static android.os.Build.VERSION_CODES.O;
^
  symbol:   static O
  location: class
G:\ionic\dexterio\platforms\android\src\de\appplant\cordova\plugin\notification\Manager.java:109: error: cannot find symbol
        if (SDK_INT < O)
                      ^
  symbol:   variable O
  location: class Manager
G:\ionic\dexterio\platforms\android\src\de\appplant\cordova\plugin\notification\Manager.java:112: error: cannot find symbol
        NotificationChannel channel = mgr.getNotificationChannel(CHANNEL_ID);
        ^
  symbol:   class NotificationChannel
  location: class Manager
G:\ionic\dexterio\platforms\android\src\de\appplant\cordova\plugin\notification\Manager.java:112: error: cannot find symbol
        NotificationChannel channel = mgr.getNotificationChannel(CHANNEL_ID);
                                         ^
  symbol:   method getNotificationChannel(String)
  location: variable mgr of type NotificationManager
G:\ionic\dexterio\platforms\android\src\de\appplant\cordova\plugin\notification\Manager.java:117: error: cannot find symbol
        channel = new NotificationChannel(
                      ^
  symbol:   class NotificationChannel
  location: class Manager
Note: Some input files use or override a deprecated API.
:compileDebugJavaWithJavac FAILED
Note: Recompile with -Xlint:deprecation for details.
6 errors


BUILD FAILED

Total time: 33.709 secs
FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
Error: cmd: Command failed with exit code 1 Error output:
G:\ionic\dexterio\platforms\android\src\de\appplant\cordova\plugin\notification\Manager.java:24: error: cannot find symbol
import android.app.NotificationChannel;
                  ^
  symbol:   class NotificationChannel
  location: package android.app
G:\ionic\dexterio\platforms\android\src\de\appplant\cordova\plugin\notification\Manager.java:41: error: cannot find symbol
import static android.os.Build.VERSION_CODES.O;
^
  symbol:   static O
  location: class
G:\ionic\dexterio\platforms\android\src\de\appplant\cordova\plugin\notification\Manager.java:109: error: cannot find symbol
        if (SDK_INT < O)
                      ^
  symbol:   variable O
  location: class Manager
G:\ionic\dexterio\platforms\android\src\de\appplant\cordova\plugin\notification\Manager.java:112: error: cannot find symbol
        NotificationChannel channel = mgr.getNotificationChannel(CHANNEL_ID);
        ^
  symbol:   class NotificationChannel
  location: class Manager
G:\ionic\dexterio\platforms\android\src\de\appplant\cordova\plugin\notification\Manager.java:112: error: cannot find symbol
        NotificationChannel channel = mgr.getNotificationChannel(CHANNEL_ID);
                                         ^
  symbol:   method getNotificationChannel(String)
  location: variable mgr of type NotificationManager
G:\ionic\dexterio\platforms\android\src\de\appplant\cordova\plugin\notification\Manager.java:117: error: cannot find symbol
        channel = new NotificationChannel(
                      ^
  symbol:   class NotificationChannel
  location: class Manager
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
6 errors

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

[ERROR] An error occurred while running cordova build android (exit code 1)

This is the error that i am getting .
-> I have just created a new project.
-> installed the Local Notification plugin from the native framework docs.
-> did’nt make any changes in code and just tried to build the app and got the error above.

Ionic info is:


cli packages: (C:\Users\hp\AppData\Roaming\npm\node_modules)

    @ionic/cli-utils  : 1.19.0
    ionic (Ionic CLI) : 3.19.0

global packages:

    cordova (Cordova CLI) : 7.0.1

local packages:

    @ionic/app-scripts : 3.1.6
    Cordova Platforms  : android 6.2.3
    Ionic Framework    : ionic-angular 3.9.2

System:

    Node : v6.11.0
    npm  : 3.10.10
    OS   : Windows 10

Environment Variables:

    ANDROID_HOME : not set

Misc:

    backend : legacy