NoClassDefFoundError Android studio

Hi, i'm a beginner student and I try build a simple app with Ice in android studio, but it give me a error:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.ice.android.helloworldice, PID: 27964
java.lang.NoClassDefFoundError: com.zeroc.IceInternal.Instance
at com.zeroc.Ice.CommunicatorI.(CommunicatorI.java:314)
at com.zeroc.Ice.Util.initialize(Util.java:233)
at com.zeroc.Ice.Util.initialize(Util.java:163)
at com.zeroc.Ice.Util.initialize(Util.java:122)
at com.ice.android.helloworldice.MainActivity.onClick(MainActivity.java:32)
at android.view.View.performClick(View.java:4858)
at android.view.View$PerformClick.run(View.java:20329)
at android.os.Handler.handleCallback(Handler.java:815)
at android.os.Handler.dispatchMessage(Handler.java:104)
at android.os.Looper.loop(Looper.java:194)
at android.app.ActivityThread.main(ActivityThread.java:5931)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:987)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:782)
I/Process: Sending signal. PID: 27964 SIG: 9
Application terminated.

My MainActivity:

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

//This button is for show a HelloWorld when that press
private Button btn;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    btn=findViewById(R.id.id_btn);
    btn.setOnClickListener(this);
}
@Override
public void onClick(View view) {
    if (view.getId() == R.id.id_btn) {
        try (Communicator communicator = Util.initialize()) { //In this line is the origin of error
            ObjectPrx base = communicator.stringToProxy("SimplePrinter:default -h 192.168.43.128 -p 10000");
            PrinterPrx printer = PrinterPrx.checkedCast(base);
            if (printer == null) {
                throw new Error("Invalid proxy");
            }
            printer.printString("Hello World");
        }
    }
}

}

My gradle (module):

apply plugin: 'com.android.application'
android {

compileSdkVersion 28
defaultConfig {

    applicationId "com.ice.android.helloworldice"
    minSdkVersion 22
    targetSdkVersion 26
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

}
buildTypes {

    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

    }

}

compileOptions {
    sourceCompatibility = '1.8'
    targetCompatibility = '1.8'
}

}

dependencies {

implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
implementation 'com.zeroc:ice:3.7.1'

}

My gradle (project):

buildscript {

repositories {
    google()
    jcenter()
    mavenCentral()
    maven {
        url 'https://repo.zeroc.com/nexus/content/repositories/releases'
    }
    maven{
        url "https://plugins.gradle.org/m2/"
    }
}
dependencies {
    classpath 'com.android.tools.build:gradle:3.2.0'
    classpath "gradle.plugin.com.zeroc.gradle.ice-builder:slice:1.4.5"

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

}

apply plugin: 'java'
apply plugin: 'slice'

slice {

java {
    srcDir = '.'
}

}
allprojects {

repositories {
    google()
    jcenter()
    maven {
        url "https://repo.zeroc.com/nexus/content/repositories/releases"
    }
}

}

task delete(type: Delete) {

delete rootProject.buildDir

}

Android Studio version: 3.2
also i tried with demo 'hello' of https://github.com/zeroc-ice/ice-demos/tree/3.7/java/android/hello, but it's very complex for me.