Id	NotificationPermission
Summary	Notifications Without Permission
Severity	Error
Category	Correctness
Platform	Android
Vendor	Android Open Source Project
Feedback	https://issuetracker.google.com/issues/new?component=192708
Since	7.4.0 (January 2023)
Affects	Kotlin and Java files and library bytecode
Editing	This check runs on the fly in the IDE editor
Implementation	Source Code
Tests	Source Code

Here is an example of lint warnings produced by this check:

src/test/pkg/NotificationTestAndroidx.java:21:Error: When targeting
Android 13 or higher, posting a permission requires holding the
POST_NOTIFICATIONS permission [NotificationPermission]
    notificationManager.notify(id, notification);
    --------------------------------------------

Here are the relevant source files:

src/AndroidManifest.xml:

<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="test.pkg.permissiontest">
    <uses-sdk android:minSdkVersion="17" android:targetSdkVersion="33" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
</manifest>

src/test/pkg/NotificationTestAndroidx.java:

package test.pkg;

import android.app.Notification;
import android.app.NotificationManager;
import android.content.Context;

import androidx.core.app.NotificationCompat;

public class NotificationTestAndroidx {
    public void testAndroidX(Context context, String channelId, int id, int requestCode, int flags) {
        NotificationCompat.Builder builder =
                new NotificationCompat.Builder(context, channelId)
                        .setSmallIcon(android.R.drawable.ic_menu_my_calendar)
                        .setContentTitle("Notification Trampoline Test")
                        .setContentText("Tap this notification to launch a new receiver")
                        .setPriority(NotificationCompat.PRIORITY_DEFAULT)
                        .setAutoCancel(true);
        Notification notification = builder.build();
        NotificationManager notificationManager =
                context.getSystemService(NotificationManager.class);
        notificationManager.notify(id, notification);
    }
}

You can also visit the source code for the unit tests for this check to see additional scenarios.

You can suppress false positives using one of the following mechanisms:

• Using a suppression annotation like this on the enclosing element:

  // Kotlin
  @Suppress("NotificationPermission")
  fun method() {
     notify(...)
  }

  or

  // Java
  @SuppressWarnings("NotificationPermission")
  void method() {
     notify(...);
  }

• Using a suppression comment like this on the line above:

  //noinspection NotificationPermission
  problematicStatement()

• Using a special lint.xml file in the source tree which turns off the check in that folder and any sub folder. A simple file might look like this:

  <?xml version="1.0" encoding="UTF-8"?>
  <lint>
      <issue id="NotificationPermission" severity="ignore" />
  </lint>

  Instead of ignore you can also change the severity here, for example from error to warning. You can find additional documentation on how to filter issues by path, regular expression and so on here.

• In Gradle projects, using the DSL syntax to configure lint. For example, you can use something like

  lintOptions {
      disable 'NotificationPermission'
  }

  In Android projects this should be nested inside an android { } block.

• For manual invocations of lint, using the --ignore flag:

  $ lint --ignore NotificationPermission ...`

• Last, but not least, using baselines, as discussed here.