react native - error while fetching build tools fi

问题:

I am unable to build my android app using react-native run-android, because I get following error. Yesterday everything worked fine. Do you know where could be the problem?

A problem occurred configuring root project 'contacto'.
> Could not resolve all files for configuration ':classpath'.
   > Could not find builder.jar (com.android.tools.build:builder:3.1.2).
     Searched in the following locations:
         https://jcenter.bintray.com/com/android/tools/build/builder/3.1.2/builder-3.1.2.jar
   > Could not find lint-gradle-api.jar (com.android.tools.lint:lint-gradle-api:26.1.2).
     Searched in the following locations:
         https://jcenter.bintray.com/com/android/tools/lint/lint-gradle-api/26.1.2/lint-gradle-api-26.1.2.jar
   > Could not find manifest-merger.jar (com.android.tools.build:manifest-merger:26.1.2).
     Searched in the following locations:
         https://jcenter.bintray.com/com/android/tools/build/manifest-merger/26.1.2/manifest-merger-26.1.2.jar
   > Could not find builder-test-api.jar (com.android.tools.build:builder-test-api:3.1.2).
     Searched in the following locations:
         https://jcenter.bintray.com/com/android/tools/build/builder-test-api/3.1.2/builder-test-api-3.1.2.jar
   > Could not find aapt2-proto.jar (com.android.tools.build:aapt2-proto:0.1.0).
     Searched in the following locations:
         https://jcenter.bintray.com/com/android/tools/build/aapt2-proto/0.1.0/aapt2-proto-0.1.0.jar
   > Could not find builder-model.jar (com.android.tools.build:builder-model:3.1.2).
     Searched in the following locations:
         https://jcenter.bintray.com/com/android/tools/build/builder-model/3.1.2/builder-model-3.1.2.jar
   > Could not find annotations.jar (com.android.tools:annotations:26.1.2).
     Searched in the following locations:
         https://jcenter.bintray.com/com/android/tools/annotations/26.1.2/annotations-26.1.2.jar

回答1:

Add the following line in your project`s gradle file

allprojects {
    repositories {
        .....
        ......
        maven { url 'https://maven.google.com' }  //  Add this line.
        ......
    } }

回答2:

The only solution that worked for me was to go to Build --> Build Types, and add google() to both repos

回答3:

For those who have the same error, try adding this to App Builde.gradle :

android {
    //the rest of the code above

    lintOptions {
       disable 'MissingTranslation'
    }
}

I had the same problem, and this, for whatever reason, worked for me.