I am trying to build this app but I am getting one error. It looks like gradle setting error. So I have provided the gradle settings from the app - android-studio-3.4

Question

build failed 6 s 131 ms
Run build 6 s 53 ms
Load build 4 ms
Configure build 155 ms
Calculate task graph 86 ms
Run tasks 5 s 805 ms
null
com.android.builder.dexing.DexArchiveBuilderException: Failed to process C:\Android-nRF-Toolbox-developNEW\Android-nRF-Toolbox-develop\app\build\intermediates\transforms\instantRun\debug\0
com.android.builder.dexing.DexArchiveBuilderException: Error while dexing.
com.android.tools.r8.CompilationFailedException: Compilation failed to complete
com.android.tools.r8.utils.AbortException: Error: Invoke-customs are only supported starting with Android O (--min-api 26)
I have tried to put the version of JAVA 8.
apply plugin: 'com.android.application'
android {
compileSdkVersion 28
buildToolsVersion "28.0.3"
defaultConfig {
applicationId "no.nordicsemi.android.nrftoolbox"
minSdkVersion 18
targetSdkVersion 28
versionCode 69
versionName "2.7.2"
resConfigs "en"
vectorDrawables.useSupportLibrary = true
}
buildTypes {
debug {
minifyEnabled true
useProguard false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
release {
minifyEnabled true
useProguard true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
}
dependencies {
implementation project(':common')
implementation fileTree(dir: 'libs', include: ['*.jar'])
wearApp project(path: ':wear')
// nRF Toolbox is using Play Service 10.2.0 in order to make the app working in China:
// https://developer.android.com/training/wearables/apps/creating-app-china.html
//noinspection GradleDependency
implementation 'com.google.android.gms:play-services-wearable:10.2.0'
implementation 'androidx.appcompat:appcompat:1.1.0-alpha04'
implementation 'androidx.preference:preference:1.1.0-alpha04'
implementation 'com.google.android.material:material:1.1.0-alpha05'
implementation 'no.nordicsemi.android:log:2.2.0'
implementation 'no.nordicsemi.android.support.v18:scanner:1.4.0'
// The DFU Library is imported automatically from jcenter:
implementation 'no.nordicsemi.android:dfu:1.9.0'
// if you desire to build the DFU Library, clone the
// https://github.com/NordicSemiconductor/Android-DFU-Library project into DFULibrary folder,
// add it as a module into the project structure and uncomment the following line
// (and also the according lines in the settings.gradle):
// implementation project(':dfu')
// Import the BLE Common Library.
// The BLE Common Library depends on BLE Library. It is enough to include the first one.
implementation 'no.nordicsemi.android:ble-common:2.1.1'
// The BLE Common Library may be included from jcenter. If you want to modify the code,
// clone both projects from GitHub and replace the line above with the following
// (and also the according lines in the settings.gradle):
// implementation project(':ble-common')
implementation('org.simpleframework:simple-xml:2.7.1') {
exclude group: 'stax', module: 'stax-api'
exclude group: 'xpp3', module: 'xpp3'
}
}