(#) Malformed Device Admin !!! WARNING: Malformed Device Admin This is a warning. Id : `DeviceAdmin` Summary : Malformed Device Admin Severity : Warning Category : Correctness Platform : Android Vendor : Android Open Source Project Feedback : https://issuetracker.google.com/issues/new?component=192708 Since : Initial Affects : Manifest files Editing : This check runs on the fly in the IDE editor 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/ManifestDetector.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/ManifestDetectorTest.kt) Copyright Year : 2011 If you register a broadcast receiver which acts as a device admin, you must also register an `` for the action `android.app.action.DEVICE_ADMIN_ENABLED`, without any ``, such that the device admin can be activated/deactivated. To do this, add ```xml `` `` `` ``` to your ``. (##) Example Here is an example of lint warnings produced by this check: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~text AndroidManifest.xml:30:Warning: You must have an intent filter for action android.app.action.DEVICE_ADMIN_ENABLED [DeviceAdmin] <meta-data android:name="android.app.device_admin" --------------------------------------- AndroidManifest.xml:43:Warning: You must have an intent filter for action android.app.action.DEVICE_ADMIN_ENABLED [DeviceAdmin] <meta-data android:name="android.app.device_admin" --------------------------------------- AndroidManifest.xml:55:Warning: You must have an intent filter for action android.app.action.DEVICE_ADMIN_ENABLED [DeviceAdmin] <meta-data android:name="android.app.device_admin" --------------------------------------- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Here is the source file referenced above: `AndroidManifest.xml`: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~xml linenumbers <manifest xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" package="foo.bar2" android:versionCode="1" android:versionName="1.0"> <uses-sdk android:minSdkVersion="14"/> <application android:icon="@drawable/ic_launcher" android:label="@string/app_name"> <!-- OK --> <receiver android:name=".DeviceAdminTestReceiver" android:label="@string/app_name" android:description="@string/app_name" android:permission="android.permission.BIND_DEVICE_ADMIN"> <meta-data android:name="android.app.device_admin" android:resource="@xml/device_admin"/> <intent-filter> <action android:name="android.app.action.DEVICE_ADMIN_ENABLED"/> </intent-filter> </receiver> <!-- Specifies data --> <receiver android:name=".DeviceAdminTestReceiver" android:label="@string/app_name" android:description="@string/app_name" android:permission="android.permission.BIND_DEVICE_ADMIN"> <meta-data android:name="android.app.device_admin" android:resource="@xml/device_admin"/> <intent-filter> <action android:name="android.app.action.DEVICE_ADMIN_ENABLED"/> <data android:scheme="content" /> </intent-filter> </receiver> <!-- Missing right intent-filter --> <receiver android:name=".DeviceAdminTestReceiver" android:label="@string/app_name" android:description="@string/app_name" android:permission="android.permission.BIND_DEVICE_ADMIN"> <meta-data android:name="android.app.device_admin" android:resource="@xml/device_admin"/> <intent-filter> <action android:name="com.test.foo.DEVICE_ADMIN_ENABLED"/> </intent-filter> </receiver> <!-- Missing intent-filter --> <receiver android:name=".DeviceAdminTestReceiver" android:label="@string/app_name" android:description="@string/app_name" android:permission="android.permission.BIND_DEVICE_ADMIN"> <meta-data android:name="android.app.device_admin" android:resource="@xml/device_admin"/> </receiver> <!-- Suppressed --> <receiver android:name=".DeviceAdminTestReceiver" android:label="@string/app_name" android:description="@string/app_name" android:permission="android.permission.BIND_DEVICE_ADMIN" tools:ignore="DeviceAdmin"> <meta-data android:name="android.app.device_admin" android:resource="@xml/device_admin"/> <intent-filter> <action android:name="com.test.foo.DEVICE_ADMIN_ENABLED"/> </intent-filter> </receiver> </application> </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/ManifestDetectorTest.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, `ManifestDetector.testDeviceAdmin`. 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="DeviceAdmin"` 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"> ... <application tools:ignore="DeviceAdmin" .../> ... </manifest> ``` * 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="DeviceAdmin" 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 'DeviceAdmin' } ``` In Android projects this should be nested inside an `android { }` block. * For manual invocations of `lint`, using the `--ignore` flag: ``` $ lint --ignore DeviceAdmin ...` ``` * Last, but not least, using baselines, as discussed [here](https://googlesamples.github.io/android-custom-lint-rules/usage/baselines.md.html).