(#) Ignored layout params on include !!! ERROR: Ignored layout params on include This is an error. Id : `IncludeLayoutParam` Summary : Ignored layout params on include Severity : Error Category : Correctness Platform : Android Vendor : Android Open Source Project Feedback : https://issuetracker.google.com/issues/new?component=192708 Since : Initial Affects : Resource files Editing : This check runs on the fly in the IDE editor See : https://stackoverflow.com/questions/2631614/does-android-xml-layouts-include-tag-really-work 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/IncludeDetector.java) 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/IncludeDetectorTest.java) Copyright Year : 2014 Layout parameters specified on an `` tag will only be used if you also override `layout_width` and `layout_height` on the `` tag; otherwise they will be ignored. !!! Tip This lint check has an associated quickfix available in the IDE. (##) Example Here is an example of lint warnings produced by this check: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~text res/layout/include_params.xml:43:Error: Layout parameter layout_margin ignored unless both layout_width and layout_height are also specified on tag [IncludeLayoutParam] android:layout_margin="20dp" ---------------------------- res/layout/include_params.xml:44:Error: Layout parameter layout_weight ignored unless both layout_width and layout_height are also specified on tag [IncludeLayoutParam] android:layout_weight="1.5" --------------------------- res/layout/include_params.xml:51:Error: Layout parameter layout_weight ignored unless layout_width is also specified on tag [IncludeLayoutParam] android:layout_weight="1.5" --------------------------- res/layout/include_params.xml:58:Error: Layout parameter layout_weight ignored unless layout_height is also specified on tag [IncludeLayoutParam] android:layout_weight="1.5" --------------------------- res/layout/include_params.xml:65:Error: Layout parameter layout_width ignored unless layout_height is also specified on tag [IncludeLayoutParam] android:layout_width="fill_parent" ---------------------------------- res/layout/include_params.xml:72:Error: Layout parameter layout_height ignored unless layout_width is also specified on tag [IncludeLayoutParam] android:layout_height="fill_parent" ----------------------------------- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Here is the source file referenced above: `res/layout/include_params.xml`: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~xml linenumbers <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <!-- Ok: No layout params --> <include layout="@layout/myincluded" /> <!-- Ok: No layout params --> <include android:id="@+id/myInclude" layout="@layout/myincluded" android:gravity="left" android:visibility="visible" /> <!-- Ok: No layout params --> <include layout="@layout/myincluded" android:layout_width="fill_parent" android:layout_height="fill_parent" /> <!-- Ok: Specifies both width and height --> <include layout="@layout/myincluded" android:layout_width="fill_parent" android:layout_height="0dp" android:layout_weight="1.5" android:visibility="visible" /> <!-- Ok: ignored --> <include layout="@layout/myincluded" android:layout_width="fill_parent" android:layout_weight="1.5" android:visibility="visible" tools:ignore="IncludeLayoutParam" /> <!-- Wrong: Missing both --> <include layout="@layout/myincluded" android:layout_margin="20dp" android:layout_weight="1.5" android:visibility="visible" /> <!-- Wrong: Missing width --> <include layout="@layout/myincluded" android:layout_height="0dp" android:layout_weight="1.5" android:visibility="visible" /> <!-- Wrong: Missing height --> <include layout="@layout/myincluded" android:layout_width="fill_parent" android:layout_weight="1.5" android:visibility="visible" /> <!-- Wrong: Specified only width --> <include android:id="@+id/myInclude" layout="@layout/myincluded" android:layout_width="fill_parent" android:visibility="visible" /> <!-- Wrong: Specified only height --> <include android:id="@+id/myInclude" layout="@layout/myincluded" android:layout_height="fill_parent" android:visibility="visible" /> </LinearLayout> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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/IncludeDetectorTest.java) 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, `IncludeDetector.test`. 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="IncludeLayoutParam"` 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"?> <include xmlns:tools="http://schemas.android.com/tools" tools:ignore="IncludeLayoutParam" ...> ... </include> ``` * 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="IncludeLayoutParam" 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 'IncludeLayoutParam' } ``` In Android projects this should be nested inside an `android { }` block. * For manual invocations of `lint`, using the `--ignore` flag: ``` $ lint --ignore IncludeLayoutParam ...` ``` * Last, but not least, using baselines, as discussed [here](https://googlesamples.github.io/android-custom-lint-rules/usage/baselines.md.html).