由于某些原因,Android Studio在编辑器和编译器中使用不同的配置。如果编译器可以使用,那就很好。但是,如果编辑器无法使用(看到未解决的文件),则需要将一些目录添加到项目源中。例如,所有资源都应标记为“源”。
依次选择“文件”->“项目结构”,然后选择“模块”,再选择您的项目。选择“源”选项卡,在右侧找到您的资源目录,然后单击蓝色的“源”按钮。关闭所有并保存更改。
此外,您还需要确保
build/source/r/debug
也是源代码。在我的设备上,所有的
build/source/*/debug
都被标记为源代码。在主模块文件.iml中进行修改。
<?xml version="1.0" encoding="UTF-8"?>
<module external.system.id="GRADLE" type="JAVA_MODULE" version="4">
<component name="FacetManager">
<facet type="android" name="Android">
<configuration>
<option name="SELECTED_BUILD_VARIANT" value="debug" />
<option name="ASSEMBLE_TASK_NAME" value="assembleDebug" />
<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="ASSETS_FOLDER_RELATIVE_PATH" value="/src/main/assets" />
</configuration>
</facet>
<facet type="android-gradle" name="Android-Gradle">
<configuration>
<option name="GRADLE_PROJECT_PATH" value=":SherlockHolmes" />
</configuration>
</facet>
</component>
<component name="NewModuleRootManager" inherit-compiler-output="true">
<exclude-output />
<content url="file://$MODULE_DIR$">
<sourceFolder url="file://$MODULE_DIR$/build/source/r/debug" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/build/source/aidl/debug" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/build/source/rs/debug" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/build/source/buildConfig/debug" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/build/res/rs/debug" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/build/source/r/test" isTestSource="true" />
<sourceFolder url="file://$MODULE_DIR$/build/source/aidl/test" isTestSource="true" />
<sourceFolder url="file://$MODULE_DIR$/build/source/rs/test" isTestSource="true" />
<sourceFolder url="file://$MODULE_DIR$/build/source/buildConfig/test" isTestSource="true" />
<sourceFolder url="file://$MODULE_DIR$/build/res/rs/test" isTestSource="true" />
<sourceFolder url="file://$MODULE_DIR$/src/debug/aidl" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/debug/assets" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/debug/java" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/debug/jni" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/debug/rs" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/debug/res" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/debug/resources" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/main/aidl" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/main/assets" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/main/jni" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/main/rs" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/main/res" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/main/resources" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/instrumentTest/aidl" isTestSource="true" />
<sourceFolder url="file://$MODULE_DIR$/src/instrumentTest/assets" isTestSource="true" />
<sourceFolder url="file://$MODULE_DIR$/src/instrumentTest/java" isTestSource="true" />
<sourceFolder url="file://$MODULE_DIR$/src/instrumentTest/jni" isTestSource="true" />
<sourceFolder url="file://$MODULE_DIR$/src/instrumentTest/rs" isTestSource="true" />
<sourceFolder url="file://$MODULE_DIR$/src/instrumentTest/res" isTestSource="true" />
<sourceFolder url="file://$MODULE_DIR$/src/instrumentTest/resources" isTestSource="true" />
<excludeFolder url="file://$MODULE_DIR$/build/apk" />
<excludeFolder url="file://$MODULE_DIR$/build/assets" />
<excludeFolder url="file://$MODULE_DIR$/build/bundles" />
<excludeFolder url="file://$MODULE_DIR$/build/classes" />
<excludeFolder url="file://$MODULE_DIR$/build/dependency-cache" />
<excludeFolder url="file://$MODULE_DIR$/build/exploded-bundles" />
<excludeFolder url="file://$MODULE_DIR$/build/incremental" />
<excludeFolder url="file://$MODULE_DIR$/build/libs" />
<excludeFolder url="file://$MODULE_DIR$/build/manifests" />
<excludeFolder url="file://$MODULE_DIR$/build/symbols" />
<excludeFolder url="file://$MODULE_DIR$/build/tmp" />
</content>
<orderEntry type="jdk" jdkName="Android 4.2.2" jdkType="Android SDK" />
<orderEntry type="sourceFolder" forTests="false" />
<orderEntry type="library" name="Sherlock.aar" level="project" />
<orderEntry type="library" name="SlidingMenu.aar" level="project" />
<orderEntry type="library" name="support-v4-13.0.0" level="project" />
</component>
</module>
项目IML
<?xml version="1.0" encoding="UTF-8"?>
<module external.system.id="GRADLE" type="JAVA_MODULE" version="4">
<component name="FacetManager">
<facet type="android-gradle" name="Android-Gradle">
<configuration>
<option name="GRADLE_PROJECT_PATH" value=":" />
</configuration>
</facet>
</component>
<component name="NewModuleRootManager" inherit-compiler-output="true">
<exclude-output />
<content url="file://$MODULE_DIR$">
<excludeFolder url="file://$MODULE_DIR$/.gradle" />
<excludeFolder url="file://$MODULE_DIR$/build" />
</content>
<orderEntry type="inheritedJdk" />
<orderEntry type="sourceFolder" forTests="false" />
</component>
</module>
黑魔法
不太确定这个,但我听说它可以起作用,虽然我相信它不应该改变任何东西。尝试在注释掉所有需要R
的行之后编译和保存项目。然后当一切都没有红色时,再添加它们回去。奇怪的是你的构建/源代码没有生成。
此外,这个问题建议检查“编译器使用外部构建”。
Android Studio不为我的导入项目生成R.java
附注
还要确保在你的Java代码中没有import android.r;
。从你展示的内容来看,一切似乎都很好。只是奇怪的是构建/源代码没有被创建。例如,我没有build/apk。也许你处于发布模式,它不会创建这些目录。