A problem occurred configuring project ':app' - react-native

Question

Getting error when trying react-native run-android.I don't know why I'm getting this error.
FAILURE: Build failed with an exception.
* What went wrong:
A problem occurred configuring project ':app'.
> Could not resolve all dependencies for configuration ':app:_debugApk'.
> A problem occurred configuring project ':react-native-vector-icons'.
> Could not resolve all dependencies for configuration ':react-native-vector-icons:classpath'.
> Could not find any matches for com.android.tools.build:gradle:2.3.+ as no versions of com.android.tools.build:gradle are available.
android\build.gradle is as follows.
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.2.3'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
mavenLocal()
jcenter()
maven {
// All of React Native (JS, Obj-C sources, Android binaries) is
installed from npm
url "$rootDir/../node_modules/react-native/android"
}
}
}
gradle version: 3.3,
plugin:2.2.3

Answer 1

Upgrade react-native-vector-icons: "^6.0.2" in package.json
Then run npm i react-native-vector-icons
As a last step, cd android && ./gradlew clean.

Answer 2

Change dependencies from:
dependencies {
implementation "com.facebook.react:react-native:${safeExtGet('reactNativeVersion', '+')}"
}
to:
dependencies {
compile "com.facebook.react:react-native:${safeExtGet('reactNativeVersion', '+')}"
}
also change buildscript dependencies to use: classpath 'com.android.tools.build:gradle:2.2.3'
and maven { url "https://dl.bintray.com/android/android-tools/" } instead of google()
So your ../node_modules/react-native-vector-icons/android/build.gradle should look like this:
buildscript {
repositories {
maven { url "https://dl.bintray.com/android/android-tools/" }
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.2.3'
}
}
apply plugin: 'com.android.library'
def safeExtGet(prop, fallback) {
rootProject.ext.has(prop) ? rootProject.ext.get(prop) : fallback
}
android {
compileSdkVersion safeExtGet('compileSdkVersion', 26)
buildToolsVersion safeExtGet('buildToolsVersion', '26.0.3')
defaultConfig {
minSdkVersion safeExtGet('minSdkVersion', 16)
targetSdkVersion safeExtGet('targetSdkVersion', 26)
versionCode 1
versionName "1.0"
}
lintOptions {
abortOnError false
}
}
repositories {
mavenCentral()
}
dependencies {
compile "com.facebook.react:react-native:${safeExtGet('reactNativeVersion', '+')}"
}