Android的工作室 - “无法解析符号”语法高亮显示的错误，虽然建设是确定 [英] Android Studio - 'Cannot resolve symbol' syntax highlighting errors although build is ok

问题描述

我有一个非常恼人的问题，因为几天后，我试图恢复previously工作的Andr​​oid Studio项目从备份中，得到一个新的计算机后。

I have a really annoying problem since several days, after I tried to restore a previously working Android Studio project from a backup, after getting a new computer.

我在无法解析符号语法高亮的问题，从机器人库中的类，如 android.support.v7.app <​​/ code>， android.support.v4.app <​​/ code>，和谷歌播放服务，这是我列为依赖关系。 但是，该项目构建罚款，我可以在手机上没有问题运行的应用程序。

I have the "cannot resolve symbol" syntax highlighting problem with the classes from Android libraries such as android.support.v7.app, android.support.v4.app, and Google Play Services, which I have included as dependencies. But, the project builds fine and I can run the App on phone with no problems.

我已经验证SDK安装目录下是否存在这些JAR文件 - 用于如\ SDK \演员\机器人\ m2repository \ COM \机器人\ SUPPORT \ appcompat-V7 \ 23.0.1。

I have verified whether these jar files exist under SDK installation - for e.g. "\sdk\extras\android\m2repository\com\android\support\appcompat-v7\23.0.1".

我的问题是非常相似，报道在下面的帖子中的：

My problem is quite similar to the ones reported in below posts:

1. <一个href="http://stackoverflow.com/questions/19508649/android-studio-says-cannot-resolve-symbol-but-project-compiles">Android工作室说＆QUOT;不能解析符号＆QUOT;但项目编译
2. <一个href="http://stackoverflow.com/questions/18991161/android-studio-cannot-resolve-symbol-but-$c$c-executes-correctly?lq=1">Android Studio无法解析符号，但code正确执行
3. <一个href="http://stackoverflow.com/questions/21100688/android-studio-suddenly-cannot-resolve-symbols?lq=1">Android工作室突然不能解析符号

1. Android Studio says "cannot resolve symbol" but project compiles
2. Android Studio cannot resolve symbol but code executes correctly
3. Android Studio suddenly cannot resolve symbols

我已经尝试了所有在各种计算器的讨论（即同步摇篮工程，无效高速缓存/重新启动，清理/重建提供的解决方案，删除摇篮生成的文件（.gradle，建设，.idea目录等），降级至较低的空气污染和升级等，但没有一种方法是有帮助的。

I have tried all the solutions provided in various stackoverflow discussions (i.e. Sync Gradle Project, Invalidate Cache/Restart, Clean/Rebuild, Deleting gradle generated files (.gradle, build, .idea directories etc.), downgrade to lower API and upgrade etc. But, no method is helpful.

我采用Android 1.3.2工作室和API 23.所有构建工具，支持库等，是最新的（试图与这两个V22 +和V23 +的库）。

I use Android Studio 1.3.2 and API 23. All build tools, support library etc. are up to date (tried with both v22.+ and v23.+ of the libraries).

请做帮助，如果你有什么其他的建议！

Please do help if you have any other suggestions!

这是我build.gradle摘录：

Extract from my build.gradle:

apply plugin: 'com.android.application'
android {
        compileSdkVersion 22
        buildToolsVersion '23.0.1'

defaultConfig {
    applicationId "com.myapp.fun"
    minSdkVersion 22
    targetSdkVersion 23
    versionCode 1
    versionName "1.0"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
}
dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    compile 'com.android.support:support-v4:22.+'
    compile 'com.android.support:appcompat-v7:22.+'
}

问题截图也可以在下面找到。我认为Android Studio是无法导入的语法高亮的依赖库，但是编译器能够将它们包括和构建成功。

Screenshots of the problems can also be found below. I think Android Studio is not able to import the dependent libraries for syntax highlighting, although the compiler is able to include them and build successfully.

截图：

推荐答案

的原因是因为我有一个'！在我的项目路径符号。 很显然，我现在了解到，许多Java程序这个原因失败的原因！ :-)

The reason is because I had a '!' symbol in my project path. Apparently, as I learnt now, many Java programs fail due to this reason! :-)

我刚刚更名的道路，它现在工作得很好:-)

I just renamed the path and it works fine now :-)

P.S。

感谢您@加布里埃尔 - 马里奥蒂为 gradlew干净的建议。事实上，这帮助我找到真正的根源。我无法从终端执行 gradlew 由于的RuntimeException ：

Thank you @gabriele-mariotti for the gradlew clean suggestion. In fact, that helped me find the real root cause. I was not able to run gradlew from the terminal due to a RuntimeException:

Could not determine wrapper version. at org.gradle.wrapper.GradleWrapperMain.wrapperVersion

但是，这帮助我学习的效果'！符号上的路径，以及对问题的根本原因。谢谢大家！

But that helped me learn about the effect of '!' symbol on paths, and to the root cause of the problem. Thank you all!

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