详细报错如下：
Could not resolve all task dependencies for configuration ':app:debugRuntimeClasspath'.
Could not resolve project :react-native-camera.
Required by:
project :app
> Cannot choose between the following configurations of project :react-native-camera:
- generalDebugRuntimeElements
- mlkitDebugRuntimeElements
All of them match the consumer attributes:
- Configuration 'generalDebugRuntimeElements':
- Required com.android.build.api.attributes.BuildTypeAttr 'debug' and found compatible value 'debug'.
- Found com.android.build.api.attributes.VariantAttr 'generalDebug' but wasn't required.
- Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'Aar' and found compatible value 'Aar'.
- Required org.gradle.usage 'java-runtime' and found compatible value 'java-runtime'.
- Found react-native-camera 'general' but wasn't required.
- Configuration 'mlkitDebugRuntimeElements':
- Required com.android.build.api.attributes.BuildTypeAttr 'debug' and found compatible value 'debug'.
- Found com.android.build.api.attributes.VariantAttr 'mlkitDebug' but wasn't required.
- Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'Aar' and found compatible value 'Aar'.
- Required org.gradle.usage 'java-runtime' and found compatible value 'java-runtime'.
- Found react-native-camera 'mlkit' but wasn't required.`
解决办法：
android/app/build.gradle
增加：
missingDimensionStrategy 'react-native-camera', 'general' in defaultConfig
同时在android/build.gradle 中：
增加
maven { url "https://jitpack.io" } maven { url "https://maven.google.com" }
参考：
https://github.com/react-native-community/react-native-camera/issues/2150