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React Native: always clear the tower before running run-native-run-android

If you do not run cd android && ./gradlew clean before react-native run-android , this fails with some error, for example:

Failed to create folder: ...

or

Failed to delete folder: ...

so I have to run again to solve the problem.

Help me solve it without gradlew clean , please.

Many thanks.

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4 answers

I had a similar problem since upgrading to RN 43. I have not yet found a solution, but I realized that a pure necessity will occur before a successful build.

The best solution for me so far is a batch script to run a project that includes gradlew clean

 @echo on cd (path to project/android folder) && ^ gradlew clean && ^ cd (path to project root folder) && ^ react-native run-android

commands: 1.cd (path to the project folder / android) 2.gradlew clean 3. cd .. 4.react-native run-android

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I also had this problem. For me on Windows it was opening a command prompt as administrator. The problem is that the script does not have permission to delete the folder.

  1. Press the Windows key
  2. Type Command Prompt
  3. Right-click the command line result that appears
  4. .Click "Run as administrator"
  5. Click “Yes” to open the “Do you want this application to be able to make changes to this device?” Pop-up.
  6. At the cd command prompt in your project directory
  7. run react-native run-android
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For me, the solution to the problem is to use the "watchman" as a file observer, as shown here: https://github.com/facebook/react-native/issues/9136#issuecomment-306486102

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For a clean Android project, run the following command

 cd android &&./gradlew clean

to restart

 cd .. && react-native run-android
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Source: https://habr.com/ru/post/1015425/

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