(#) Invalid Usage of Exact Alarms !!! ERROR: Invalid Usage of Exact Alarms This is an error. Id : `ExactAlarm` Summary : Invalid Usage of Exact Alarms Severity : Error Category : Correctness Platform : Android Vendor : Android Open Source Project Feedback : https://issuetracker.google.com/issues/new?component=192708 Since : 8.1.0 (July 2023) Affects : Kotlin and Java files and manifest files Editing : This check runs on the fly in the IDE editor See : https://developer.android.com/training/scheduling/alarms Implementation : [Source Code](https://cs.android.com/android-studio/platform/tools/base/+/mirror-goog-studio-main:lint/libs/lint-checks/src/main/java/com/android/tools/lint/checks/AlarmDetector.kt) Tests : [Source Code](https://cs.android.com/android-studio/platform/tools/base/+/mirror-goog-studio-main:lint/libs/lint-tests/src/test/java/com/android/tools/lint/checks/AlarmDetectorTest.kt) The `USE_EXACT_ALARM` permission is only available when targeting API level 33 and above. Also, note that this permission is only permitted for apps whose core functionality requires precisely-timed actions for user facing features. (##) Example Here is an example of lint warnings produced by this check: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~text AndroidManifest.xml:2:Error: USE_EXACT_ALARM can only be used when targeting API level 33 or higher [ExactAlarm] <uses-permission android:name="android.permission.USE_EXACT_ALARM" /> ---------------------------------- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Here is the source file referenced above: `AndroidManifest.xml`: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~xml linenumbers <manifest xmlns:android="http://schemas.android.com/apk/res/android"> <uses-permission android:name="android.permission.USE_EXACT_ALARM" /> <uses-sdk android:targetSdkVersion="32" /> </manifest> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ You can also visit the [source code](https://cs.android.com/android-studio/platform/tools/base/+/mirror-goog-studio-main:lint/libs/lint-tests/src/test/java/com/android/tools/lint/checks/AlarmDetectorTest.kt) for the unit tests for this check to see additional scenarios. The above example was automatically extracted from the first unit test found for this lint check, `AlarmDetector.testExactAlarmPermissions`. To report a problem with this extracted sample, visit https://issuetracker.google.com/issues/new?component=192708. (##) Suppressing You can suppress false positives using one of the following mechanisms: * Adding the suppression attribute `tools:ignore="ExactAlarm"` on the problematic XML element (or one of its enclosing elements). You may also need to add the following namespace declaration on the root element in the XML file if it's not already there: `xmlns:tools="http://schemas.android.com/tools"`. ```xml <?xml version="1.0" encoding="UTF-8"?> <manifest xmlns:tools="http://schemas.android.com/tools"> ... <uses-permission tools:ignore="ExactAlarm" .../> ... </manifest> ``` * Using a suppression annotation like this on the enclosing element: ```kt // Kotlin @Suppress("ExactAlarm") fun method() { setRepeating(...) } ``` or ```java // Java @SuppressWarnings("ExactAlarm") void method() { setRepeating(...); } ``` * Using a suppression comment like this on the line above: ```kt //noinspection ExactAlarm 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 <?xml version="1.0" encoding="UTF-8"?> <lint> <issue id="ExactAlarm" 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](https://googlesamples.github.io/android-custom-lint-rules/usage/lintxml.md.html). * In Gradle projects, using the DSL syntax to configure lint. For example, you can use something like ```gradle lintOptions { disable 'ExactAlarm' } ``` In Android projects this should be nested inside an `android { }` block. * For manual invocations of `lint`, using the `--ignore` flag: ``` $ lint --ignore ExactAlarm ...` ``` * Last, but not least, using baselines, as discussed [here](https://googlesamples.github.io/android-custom-lint-rules/usage/baselines.md.html).