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react-native-qrcode-scannerのAndroidで詰まった話

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はじめに

検証時のデバイスは「Android 7.0」です。

詰まった箇所

iOSでは動くが、Androidで動作しない。

react-native-qrcode-scanner」を使うとこんなエラーがでる

FAILURE: Build failed with an exception.

* Where:
Build file '/YOUR_WORKING_FOLDER/react-native-apps/react-native-qrcode-scanner-test/node_modules/react-native-camera/android/build.gradle' line: 8

* What went wrong:
A problem occurred evaluating project ':react-native-camera'.
> Could not find method google() for arguments [] on repository container of type org.gradle.api.internal.artifacts.dsl.DefaultRepositoryHandler.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 1.305 secs
Could not install the app on the device, read the error above for details.
Make sure you have an Android emulator running or a device connected and have
set up your Android development environment:
https://facebook.github.io/react-native/docs/getting-started.html

解決策

gradleの更新

gradle-3.5.1-all.zipのままだと、google()がないとかでエラーがでますが
gradle-4.1-all.zipにしたら出なくなりました。

/YOUR_WORKING_FOLDER/react-native-apps/react-native-qrcode-scanner-test/android/gradle/wrapper/gradle-wrapper.properties
distributionUrl=https\://services.gradle.org/distributions/gradle-3.5.1-all.zip
↓
distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip

gradleを更新した際は「classpath」もアップデートしないとビルドで失敗します。

/YOUR_WORKING_FOLDER/react-native-apps/react-native-qrcode-scanner-test/android/build.gradle
dependencies {
        classpath 'com.android.tools.build:gradle:2.3.3'
↓
dependencies {
        classpath 'com.android.tools.build:gradle:3.0.1'

注意

gradleの変更でライブラリーによってはエラーがでるかもなので、導入する際は要注意です。(今の所はエラーにぶつかってないですが。。)

参考サイト

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