确认一下app.iml内容:
<module version="4">
<component name="FacetManager">
<facet type="android-gradle" name="Android-Gradle">
<configuration>
<option name="GRADLE_PROJECT_PATH" value=":app" />
<option name="LAST_SUCCESSFUL_SYNC_AGP_VERSION" value="3.6.2" />
<option name="LAST_KNOWN_AGP_VERSION" value="3.6.2" />
</configuration>
</facet>
<facet type="android" name="Android">
<configuration>
<option name="SELECTED_BUILD_VARIANT" value="debug" />
<option name="ASSEMBLE_TASK_NAME" value="assembleDebug" />
<option name="COMPILE_JAVA_TASK_NAME" value="compileDebugSources" />
<afterSyncTasks>
<task>generateDebugSources</task>
</afterSyncTasks>
<option name="ALLOW_USER_CONFIGURATION" value="false" />
<option name="MANIFEST_FILE_RELATIVE_PATH" value="/src/main/AndroidManifest.xml" />
<option name="RES_FOLDER_RELATIVE_PATH" value="/src/main/res" />
<option name="RES_FOLDERS_RELATIVE_PATH" value="file://$MODULE_DIR$/src/main/res" />
<option name="TEST_RES_FOLDERS_RELATIVE_PATH" value="" />
<option name="ASSETS_FOLDER_RELATIVE_PATH" value="/src/main/assets" />
</configuration>
</facet>
</component>
</module>