错误: 任务“ : app: processDebugResources”的执行失败。 > java.io.IOException: 在 android 工作室中无法删除文件夹“”

我正在尝试用 Android Studio 开发一个 Android 应用程序, 所以我创建了一个 Android 应用程序，我想发布它。 每当我点击“构建项目”获取 apk 文件, 我得到了这个错误:

Error:Execution failed for task ':app:processDebugResources'.
> java.io.IOException: Could not delete folder C:\Users\ehsan\AndroidStudioProjects\MyApplication3\app\build\generated\source\r\debug\com\example\ehsan

Screenshot showing the error message

建筑级别:

apply plugin: 'com.android.application'


android {
compileSdkVersion 23
buildToolsVersion "23.0.2"


defaultConfig {
applicationId "com.example.ehsan.myapplication"
minSdkVersion 15
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}


dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.2.0'
}
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最佳答案

I guess some of the files in the target build directory is open in another tool you use. Just a file handle open in the folder which has to be cleaned. The build task 'clean' wants to delete all the files in the build directory(normally 'target') and when it fails, the build fails.

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Just clean your project, it works for me.

Clean task for gradle will work.

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REACT NATIVE

From your react native folder run:

cd android && gradlew clean

THEN

cd .. && react-native run-android

Notes:

For mac you may need to change gradlew to ./gradlew

For the command prompt you may need to change the && to &

For powershell you may need to change the && to ; and gradlew to .\gradlew.bat

Each command can also be run individually like so cd android then gradlew clean then cd .. then react-native run-android

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Fix is very simple: Just follow below instructions

  1. First, save the project
  2. Click on project folder
  3. Click on Syncronize button in the menubar (The third icon from the left which is just below to File menu option)
  4. Clean project and run
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as others have said allready you need to clean your project , the steps to clean the project are:

Build -> Clean Project or Build -> Rebuild Project

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In my case, that problem is about permissions. if you open android studio as administrator (or using sudo) then if you open the project again as normal user, android studio may not delete some files because when you open the project as administrator, some project files permissions are changed. If you lived those steps, I think you should clone the project from your VCS (git, tfs, svn etc.) again. Otherwise you have to configure project file - folder permissions.

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I have same issue. When I clean my project and rebuild it then everything works fine.

Build -> Clean Project

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Just clean your project (Android Studio>Build>Clean Project) and build again.

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React Native

These steps solved my problem:

  • Renaming of ReactNativeApp/android/build directory to old.build
  • Closing Android Studio
  • Inside ReactNativeApp/android executed this command. gradlew clean
  • Making sure my RAM is 1500mb free
  • Then finally executing the command react-native run-android

** It's quite interesting to close Android Studio. But beleive me these steps solved my problem **

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I found another handy solution, which avoids rebuilding all components again and again, in this article: http://bitstopixels.blogspot.ca/2017/04/react-native-windows-10-eperm-operation.html

  1. Execute react-native run-android
  2. As soon as React Packager window opens, close it
  3. Wait for react-native run-android to complete giving you the BUILD SUCCESSFUL message. (The app will be launched with a red error screen complaining connecting to server failed. Don't panic.)
  4. Then run react-native start to start the React Packager, this is the server indicated in the error message of the previous step
  5. Reload the app in emulator or device (Double tap the R key)
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Stopping OpenSdk Java process (inner to Android Studio process) worked.

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If you encountered these errors due to opening the android studio with sudo command, then the solution is setting permission for the project folder. Run the command below.

sudo chmod -R 777 your_project_folder

clean and rebuild again your android project.

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If you have another instance of Android Studio running, then kindly close it and then build the app. This worked in my case

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Just Do onething File->Invalidate caches/ restart. After loading the project sync the project.enter image description here

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Update your gradle version.

Go to your project level build.gradle file and make sure you are using the latest version of gradle.

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React Native

In my case I just refresh ( http://localhost:8081/debugger-ui/ ) , and it works... Any other solutions didn't work for me. Perhaps some files are used by debuger and it can't delete them... Anyway, it works for me. Please try this and give a feedback.

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If it says:

The term 'gradlew' is not recognized

Then using following command

npm start -- --reset-cache

worked for me. cheers!

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Delete android/app/build folder and run react-native run-android

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From my experience in React Native, you can also restart your CLI and this error goes away.

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Fix This issue by this command

In Windows Platform

cd android && gradlew clean && cd..

In Mac Platform

cd android && ./gradlew clean && cd ..

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If you are using macOS then => sudo ./gradlew clean will work for you.

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I'm working on windows 10 and i can't find gradlew i cleaned the project using Android Studio : Build ---> clean project and after that i was able to run : react-native run-android or to run project using Android Studio

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i just delete the error package from package.json and run again gradlew clean and its works for me For React Native

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I deleted folder app/build and the problem was resolved in my case.

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In my case it was that you had the app installed and when you gave it react-native run-android I could not install the app since it was already previously installed

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Try closing your text editor (maybe VS Code) and File Explorer and run the command again in terminal with admin permissions.


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