react-native-view-shot/example/android/build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.1.4'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

// This will apply compileSdkVersion and buildToolsVersion to any android modules
subprojects { subproject ->
    afterEvaluate { project ->
        if (!project.name.equalsIgnoreCase("app") && project.hasProperty("android")) {
            android {
                compileSdkVersion 27
                buildToolsVersion '28.0.3'
            }
        }
    }
}


allprojects {
    repositories {
        mavenLocal()
        google()
        jcenter()
        maven {
            // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
            url "$rootDir/../node_modules/react-native/android"
        }
    }
}


subprojects {
    configurations.all {
        resolutionStrategy {
            eachDependency { details ->
                /* Override by group name */
                switch (details.requested.group) {
                    case 'com.android.support': details.useVersion '27.+'; break
                }
            }
        }
    }
}