When Update to 3.3.1 it through error in one of class : "can't resolve symbol hydra sdk".

[khalilhoti]

Hi i just update hydra sdk to 3.3.1 now i am unable to get my project build due to error below is full class

`package com.iplay3d.foxbayvpn.vpn.Activities;

import android.content.ActivityNotFoundException; import android.content.DialogInterface; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.os.Handler; import android.os.Looper; import android.os.SystemClock; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.Button; import android.widget.ImageView; import android.widget.RatingBar; import android.widget.RelativeLayout; import android.widget.TextView; import android.widget.Toast;

import androidx.annotation.NonNull; import androidx.appcompat.app.ActionBarDrawerToggle; import androidx.appcompat.app.AlertDialog; import androidx.appcompat.app.AppCompatActivity; import androidx.appcompat.widget.Toolbar; import androidx.core.view.GravityCompat; import androidx.drawerlayout.widget.DrawerLayout;

import com.airbnb.lottie.LottieAnimationView; import com.anchorfree.hydrasdk.HydraSdk; import com.anchorfree.hydrasdk.api.response.RemainingTraffic; import com.anchorfree.hydrasdk.callbacks.Callback; import com.anchorfree.hydrasdk.exceptions.HydraException; import com.anchorfree.hydrasdk.vpnservice.VPNState; import com.iplay3d.foxbayvpn.vpn.BuildConfig; import com.iplay3d.foxbayvpn.vpn.Config; import com.iplay3d.foxbayvpn.vpn.R; import com.iplay3d.foxbayvpn.vpn.Utils.LocalFormatter; import com.bumptech.glide.Glide; import com.google.android.gms.ads.AdListener; import com.google.android.gms.ads.AdLoader; import com.google.android.gms.ads.AdRequest; import com.google.android.gms.ads.InterstitialAd; import com.google.android.gms.ads.MobileAds; import com.google.android.gms.ads.VideoController; import com.google.android.gms.ads.VideoOptions; import com.google.android.gms.ads.formats.MediaView; import com.google.android.gms.ads.formats.NativeAdOptions; import com.google.android.gms.ads.formats.UnifiedNativeAd; import com.google.android.gms.ads.formats.UnifiedNativeAdView; import com.google.android.material.navigation.NavigationView; import com.onesignal.OneSignal; import com.pixplicity.easyprefs.library.Prefs;

import butterknife.BindView; import butterknife.ButterKnife; import butterknife.OnClick; import es.dmoral.toasty.Toasty;

public abstract class ContentsActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {

LottieAnimationView lottieAnimationView;
boolean vpn_toast_check = true;

protected static final String TAG = MainActivity.class.getSimpleName();

private int adCount = 0;
VPNState state;
int progressBarValue = 0;
Handler handler = new Handler();
private Handler customHandler = new Handler();
private long startTime = 0L;
long timeInMilliseconds = 0L;
long timeSwapBuff = 0L;
long updatedTime = 0L;
@BindView(R.id.toolbar)
protected Toolbar toolbar;

@BindView(R.id.connection_status)
TextView t_connection_status;

@BindView(R.id.connection_status_image)
ImageView i_connection_status_image;

@BindView(R.id.vpn_details)
ImageView vpn_detail_image;

@BindView(R.id.tv_timer)
TextView timerTextView;

@BindView(R.id.connect_btn)
ImageView connectBtnTextView;

@BindView(R.id.connection_state)
TextView connectionStateTextView;

@BindView(R.id.flag_image)
ImageView imgFlag;

@BindView(R.id.flag_name)
TextView flagName;

//admob native advance)
private UnifiedNativeAd nativeAd;
private InterstitialAd mInterstitialAd;
private String STATUS;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

// Lottie animation to show animation in the project lottieAnimationView = findViewById(R.id.animation_view);

    ButterKnife.bind(this);
    setSupportActionBar(toolbar);
    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    drawer.addDrawerListener(toggle);
    toggle.syncState();

    NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
    navigationView.setNavigationItemSelectedListener(this);

    vpn_detail_image.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {

            startActivity(new Intent(ContentsActivity.this, Servers.class));
        }
    });

    if (getResources().getBoolean(R.bool.ads_switch) && (!Config.ads_subscription || !Config.all_subscription)) {
        // Initialize the Mobile Ads SDK.

        MobileAds.initialize(ContentsActivity.this, getString(R.string.admob_appid));

        //interstitial
        mInterstitialAd = new InterstitialAd(this);
        mInterstitialAd.setAdUnitId(getString(R.string.admob_intersitail));
        mInterstitialAd.loadAd(new AdRequest.Builder()
                .addTestDevice("91b511f6-d4ab-4a6b-94fa-e538dfbee85f")
                .build());

    }

    if (Prefs.contains("connectStart") && Prefs.getString("connectStart", "").equals("on")) {

        isConnected(new Callback<Boolean>() {
            @Override
            public void success(@NonNull Boolean aBoolean) {
                if (aBoolean) {
                    STATUS = "Disconnect";

                    if (mInterstitialAd.isLoaded()) {
                        mInterstitialAd.show();
                    } else {
                        disconnectAlert();
                    }
                } else {

                    STATUS = "Connect";

                    if (mInterstitialAd.isLoaded()) {

// Interstitial Ad loaded successfully... mInterstitialAd.show(); } else {

                        updateUI();
                        connectToVpn();
                    }
                }
            }

            @Override
            public void failure(@NonNull HydraException e) {
                Toast.makeText(getApplicationContext(), "" + e.getMessage(), Toast.LENGTH_LONG).show();
            }
        });
    }

    if (Prefs.contains("noti") && Prefs.getString("noti", "off").equals("off")) {
        OneSignal.setSubscription(false);
    } else if (Prefs.contains("noti") && Prefs.getString("noti", "off").equals("on")) {
        OneSignal.setSubscription(true);
    } else {
        OneSignal.setSubscription(false);
    }
}

@Override
protected void onStart() {
    super.onStart();
    if (getResources().getBoolean(R.bool.ads_switch) && (!Config.ads_subscription || !Config.all_subscription)) {
        //native
        refreshAd();
        //interstitital
        mInterstitialAd.setAdListener(new AdListener() {

            @Override
            public void onAdFailedToLoad(int i) {
                super.onAdFailedToLoad(i);
            }

            @Override
            public void onAdLoaded() {
                super.onAdLoaded();
            }

            @Override
            public void onAdClosed() {
                super.onAdClosed();

                if (STATUS.equals("Connect")) {
                    updateUI();
                    connectToVpn();
                    loadAdAgain();
                } else if (STATUS.equals("Disconnect")) {
                    disconnectAlert();
                    loadAdAgain();
                }
            }
        });
    }

}

private void loadAdAgain() {

// load Ads for multiple times in background // if (getResources().getBoolean(R.bool.ads_switch)) { // mInterstitialAd.loadAd(new AdRequest.Builder().build()); // } }

@Override
public void onBackPressed() {
    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    if (drawer.isDrawerOpen(GravityCompat.START)) {
        drawer.closeDrawer(GravityCompat.START);
    } else {
        super.onBackPressed();
    }
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_glob) {
        startActivity(new Intent(this, Servers.class));
        return true;
    }

    if (id == R.id.action_purchase) {
        startActivity(new Intent(this, PurchasesActivity.class));
        return true;
    }

    return super.onOptionsItemSelected(item);
}

@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
    // Handle navigation view item clicks here.
    int id = item.getItemId();

    if (id == R.id.nav_upgrade) {

// upgrade application is available... startActivity(new Intent(this, Servers.class)); } else if (id == R.id.nav_unlock) { startActivity(new Intent(this, PurchasesActivity.class)); } else if (id == R.id.nav_helpus) { // find help about the application Intent intent = new Intent(Intent.ACTION_SENDTO); intent.setData(Uri.parse("mailto:")); intent.putExtra(Intent.EXTRA_EMAIL, new String[]{"infinityvideoreward@courseunity.com"}); intent.putExtra(Intent.EXTRA_SUBJECT, "Improve Comments"); intent.putExtra(Intent.EXTRA_TEXT, "message body");

        try {
            startActivity(Intent.createChooser(intent, "send mail"));
        } catch (ActivityNotFoundException ex) {
            Toast.makeText(this, "No mail app found!!!", Toast.LENGTH_SHORT);
        } catch (Exception ex) {
            Toast.makeText(this, "Unexpected Error!!!", Toast.LENGTH_SHORT);
        }
    } else if (id == R.id.nav_rate) {

// rate application... rateUs(); } else if (id == R.id.nav_share) { // share the application... try { Intent shareIntent = new Intent(Intent.ACTION_SEND); shareIntent.setType("text/plain"); shareIntent.putExtra(Intent.EXTRA_SUBJECT, "share app"); shareIntent.putExtra(Intent.EXTRA_TEXT, "I'm using this Free VPN App, it's provide all servers free https://play.google.com/store/apps/details?id="+ BuildConfig.APPLICATION_ID); startActivity(Intent.createChooser(shareIntent, "choose one")); } catch (Exception e) { }

    } else if (id == R.id.nav_setting) {

// Application settings... startActivity(new Intent(this, Settings.class)); } else if (id == R.id.nav_faq) { startActivity(new Intent(this, Faq.class)); } else if (id == R.id.nav_policy) { Uri uri = Uri.parse(getResources().getString(R.string.privacy_policy_link)); // missing 'http://' will cause crashed Intent intent = new Intent(Intent.ACTION_VIEW, uri); startActivity(intent); } DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); drawer.closeDrawer(GravityCompat.START); return true; }

private Handler mUIHandler = new Handler(Looper.getMainLooper());
final Runnable mUIUpdateRunnable = new Runnable() {
    @Override
    public void run() {
        updateUI();
        checkRemainingTraffic();
        mUIHandler.postDelayed(mUIUpdateRunnable, 10000);
    }
};

@Override
protected void onResume() {

// if the application again available from background state... super.onResume(); isConnected(new Callback() { @Override public void success(@NonNull Boolean aBoolean) { if (aBoolean) { startUIUpdateTask(); } }

        @Override
        public void failure(@NonNull HydraException e) {

        }
    });
}

@Override
protected void onPause() {

// application in the background state... super.onPause(); stopUIUpdateTask(); }

@Override
protected void onDestroy() {
    if (nativeAd != null) {
        nativeAd.destroy();
    }
    super.onDestroy();
}

protected abstract void loginToVpn();

@OnClick(R.id.connect_btn)
public void onConnectBtnClick(View v) {

    isConnected(new Callback<Boolean>() {
        @Override
        public void success(@NonNull Boolean aBoolean) {
            if (aBoolean) {
                STATUS = "Disconnect";

                if (getResources().getBoolean(R.bool.ads_switch)&& (!Config.ads_subscription || !Config.all_subscription)) {

                    if (mInterstitialAd.isLoaded()) {
                        mInterstitialAd.show();
                    }else {
                        disconnectAlert();
                    }

                } else {
                    disconnectAlert();
                }
            } else {

                STATUS = "Connect";

                if (getResources().getBoolean(R.bool.ads_switch)&& (!Config.ads_subscription || !Config.all_subscription)) {

// Interstitial Ad loaded successfully... if (mInterstitialAd.isLoaded()) { mInterstitialAd.show(); } else { updateUI(); connectToVpn(); }

                } else {
                    updateUI();
                    connectToVpn();
                }
            }
        }

        @Override
        public void failure(@NonNull HydraException e) {
            Toast.makeText(getApplicationContext(), "" + e.getMessage(), Toast.LENGTH_LONG).show();
        }
    });

}

/*  Different functions defining the state of the vpn
 *  */
protected abstract void isConnected(Callback<Boolean> callback);

protected abstract void connectToVpn();

protected abstract void disconnectFromVnp();

protected abstract void chooseServer();

protected abstract void getCurrentServer(Callback<String> callback);

protected void startUIUpdateTask() {
    stopUIUpdateTask();
    mUIHandler.post(mUIUpdateRunnable);
}

protected void stopUIUpdateTask() {
    mUIHandler.removeCallbacks(mUIUpdateRunnable);
    updateUI();
}

protected abstract void checkRemainingTraffic();

protected void updateUI() {

// To find vpn state... HydraSdk.getVpnState(new Callback() { @Override public void success(@NonNull VPNState vpnState) { state = vpnState; switch (vpnState) { case IDLE: { // vpn is idle... loadIcon(); connectBtnTextView.setEnabled(true); connectionStateTextView.setText(R.string.disconnected); timerTextView.setVisibility(View.GONE); hideConnectProgress(); break; } case CONNECTED: { // vpn Connected Successfully... loadIcon(); connectBtnTextView.setEnabled(true); connectionStateTextView.setText(R.string.connected); timer(); timerTextView.setVisibility(View.VISIBLE); hideConnectProgress(); break; } case CONNECTING_VPN: case CONNECTING_CREDENTIALS: case CONNECTING_PERMISSIONS: { // during connecting vpn loadIcon(); connectionStateTextView.setText(R.string.connecting); connectBtnTextView.setEnabled(true); timerTextView.setVisibility(View.GONE); showConnectProgress(); break; } case PAUSED: { // vpn paused... connectBtnTextView.setImageResource(R.drawable.power_off); t_connection_status.setText("NotSecure"); connectionStateTextView.setText(R.string.paused); i_connection_status_image.setImageResource(R.drawable.not_secure_vpn); break; }

            }
        }

        @Override
        public void failure(@NonNull HydraException e) {

        }
    });

    getCurrentServer(new Callback<String>() {
        //            try to connect to current vpn server...
        @Override
        public void success(@NonNull final String currentServer) {
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                }
            });
        }

        @Override
        public void failure(@NonNull HydraException e) {
        }
    });
}

protected void updateTrafficStats(long outBytes, long inBytes) {

// try to update the traffic state of the vpn... String outString = LocalFormatter.easyRead(outBytes, false); String inString = LocalFormatter.easyRead(inBytes, false);

}

protected void updateRemainingTraffic(RemainingTraffic remainingTrafficResponse) {
    if (remainingTrafficResponse.isUnlimited()) {
    } else {
        String trafficUsed = LocalFormatter.byteCounter(remainingTrafficResponse.getTrafficUsed()) + "Mb";
        String trafficLimit = LocalFormatter.byteCounter(remainingTrafficResponse.getTrafficLimit()) + "Mb";

    }
}

protected void showConnectProgress() {

// Updating progressbar new Thread(new Runnable() {

        @Override
        public void run() {
            // TODO Auto-generated method stub

            while (state == VPNState.CONNECTING_VPN || state == VPNState.CONNECTING_CREDENTIALS) {
                progressBarValue++;

                handler.post(new Runnable() {

                    @Override
                    public void run() {

                    }
                });
                try {
                    Thread.sleep(300);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    }).start();
}

protected void hideConnectProgress() {
    connectionStateTextView.setVisibility(View.VISIBLE);
}

protected void showMessage(String msg) {
    Toast.makeText(ContentsActivity.this, msg, Toast.LENGTH_SHORT).show();
}

protected void rateUs() {
    Uri uri = Uri.parse("market://details?id=" + this.getPackageName());
    Intent goToMarket = new Intent(Intent.ACTION_VIEW, uri);
    // To count with Play market backstack, After pressing back button,
    // to taken back to our application, we need to add following flag to intent.
    goToMarket.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY |
            Intent.FLAG_ACTIVITY_NEW_DOCUMENT |
            Intent.FLAG_ACTIVITY_MULTIPLE_TASK);
    try {
        startActivity(goToMarket);
    } catch (ActivityNotFoundException e) {
        startActivity(new Intent(Intent.ACTION_VIEW,
                Uri.parse("https://play.google.com/store/apps/details?id=" + this.getPackageName())));
    }
}

protected void timer() {
    if (adCount == 0) {
        startTime = SystemClock.uptimeMillis();
        customHandler.postDelayed(updateTimerThread, 0);
        timeSwapBuff += timeInMilliseconds;

    }
}

private Runnable updateTimerThread = new Runnable() {

    public void run() {

        timeInMilliseconds = SystemClock.uptimeMillis() - startTime;

        updatedTime = timeSwapBuff + timeInMilliseconds;

        int secs = (int) (updatedTime / 1000);
        int mins = secs / 60;
        int hrs = mins / 60;
        secs = secs % 60;
        int milliseconds = (int) (updatedTime % 1000);
        timerTextView.setText(String.format("%02d", hrs) + ":"
                + String.format("%02d", mins) + ":"
                + String.format("%02d", secs));
        customHandler.postDelayed(this, 0);
    }

};

protected void loadIcon() {
    if (state == VPNState.IDLE) {
        Glide.with(this).load(R.drawable.power_off).into(connectBtnTextView);
        t_connection_status.setText("NotSecure");
        i_connection_status_image.setImageResource(R.drawable.not_secure_vpn);

    } else if (state == VPNState.CONNECTING_VPN || state == VPNState.CONNECTING_CREDENTIALS) {
        connectBtnTextView.setVisibility(View.VISIBLE);/*INVISIBLE IS CHEANGED TO VISIBLE*/
        lottieAnimationView.setVisibility(View.VISIBLE);
    } else if (state == VPNState.CONNECTED) {
        Glide.with(this).load(R.drawable.power_on).into(connectBtnTextView);
        connectBtnTextView.setVisibility(View.VISIBLE);
        t_connection_status.setText("Secure");
        lottieAnimationView.setVisibility(View.INVISIBLE);
        if (vpn_toast_check == true) {
            Toasty.success(ContentsActivity.this, "VPN Connected Successfully", Toast.LENGTH_SHORT).show();
            vpn_toast_check = false;
        }
        i_connection_status_image.setImageResource(R.drawable.secure_vpn);

    }
}

protected void disconnectAlert() {

    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setTitle("Do you want to disconnect?");
    builder.setPositiveButton("Disconnect",
            new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int which) {
                    disconnectFromVnp();
                    vpn_toast_check = true;
                    Toasty.success(ContentsActivity.this, "VPN Disconnected", Toast.LENGTH_SHORT).show();
                }
            });
    builder.setNegativeButton("Cancel",
            new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int which) {
                    Toasty.success(ContentsActivity.this, "VPN Remains Connected", Toast.LENGTH_SHORT).show();
                }
            });
    builder.show();
}

//loading native ad
private void populateUnifiedNativeAdView(UnifiedNativeAd nativeAd, UnifiedNativeAdView
        adView) {
    // Set the media view. Media content will be automatically populated in the media view once
    MediaView mediaView = adView.findViewById(R.id.ad_media);
    adView.setMediaView(mediaView);

    // Set other ad assets.
    adView.setHeadlineView(adView.findViewById(R.id.ad_headline));
    adView.setBodyView(adView.findViewById(R.id.ad_body));
    adView.setCallToActionView(adView.findViewById(R.id.ad_call_to_action));
    adView.setIconView(adView.findViewById(R.id.ad_app_icon));
    adView.setPriceView(adView.findViewById(R.id.ad_price));
    adView.setStarRatingView(adView.findViewById(R.id.ad_stars));
    adView.setStoreView(adView.findViewById(R.id.ad_store));
    adView.setAdvertiserView(adView.findViewById(R.id.ad_advertiser));

    // The headline is guaranteed to be in every UnifiedNativeAd.
    ((TextView) adView.getHeadlineView()).setText(nativeAd.getHeadline());

    // These assets aren't guaranteed to be in every UnifiedNativeAd, so it's important to
    // check before trying to display them.
    if (nativeAd.getBody() == null) {
        adView.getBodyView().setVisibility(View.INVISIBLE);
    } else {
        adView.getBodyView().setVisibility(View.VISIBLE);
        ((TextView) adView.getBodyView()).setText(nativeAd.getBody());
    }

    if (nativeAd.getCallToAction() == null) {
        adView.getCallToActionView().setVisibility(View.INVISIBLE);
    } else {
        adView.getCallToActionView().setVisibility(View.VISIBLE);
        ((Button) adView.getCallToActionView()).setText(nativeAd.getCallToAction());
    }

    if (nativeAd.getIcon() == null) {
        adView.getIconView().setVisibility(View.GONE);
    } else {
        ((ImageView) adView.getIconView()).setImageDrawable(
                nativeAd.getIcon().getDrawable());
        adView.getIconView().setVisibility(View.VISIBLE);
    }

    if (nativeAd.getPrice() == null) {
        adView.getPriceView().setVisibility(View.INVISIBLE);
    } else {
        adView.getPriceView().setVisibility(View.VISIBLE);
        ((TextView) adView.getPriceView()).setText(nativeAd.getPrice());
    }

    if (nativeAd.getStore() == null) {
        adView.getStoreView().setVisibility(View.INVISIBLE);
    } else {
        adView.getStoreView().setVisibility(View.VISIBLE);
        ((TextView) adView.getStoreView()).setText(nativeAd.getStore());
    }

    if (nativeAd.getStarRating() == null) {
        adView.getStarRatingView().setVisibility(View.INVISIBLE);
    } else {
        ((RatingBar) adView.getStarRatingView())
                .setRating(nativeAd.getStarRating().floatValue());
        adView.getStarRatingView().setVisibility(View.VISIBLE);
    }

    if (nativeAd.getAdvertiser() == null) {
        adView.getAdvertiserView().setVisibility(View.INVISIBLE);
    } else {
        ((TextView) adView.getAdvertiserView()).setText(nativeAd.getAdvertiser());
        adView.getAdvertiserView().setVisibility(View.VISIBLE);
    }

    // This method tells the Google Mobile Ads SDK that you have finished populating your
    // native ad view with this native ad. The SDK will populate the adView's MediaView
    // with the media content from this native ad.
    adView.setNativeAd(nativeAd);

    // Get the video controller for the ad. One will always be provided, even if the ad doesn't
    // have a video asset.
    VideoController vc = nativeAd.getVideoController();

    // Updates the UI to say whether or not this ad has a video asset.
    if (vc.hasVideoContent()) {

        // Create a new VideoLifecycleCallbacks object and pass it to the VideoController. The
        // VideoController will call methods on this object when events occur in the video
        // lifecycle.
        vc.setVideoLifecycleCallbacks(new VideoController.VideoLifecycleCallbacks() {
            @Override
            public void onVideoEnd() {
                // Publishers should allow native ads to complete video playback before
                // refreshing or replacing them with another ad in the same UI location.

                super.onVideoEnd();
            }
        });
    } else {
    }
}

/**
 * Creates a request for a new native ad based on the boolean parameters and calls the
 * corresponding "populate" method when one is successfully returned.
 */
private void refreshAd() {

    AdLoader.Builder builder = new AdLoader.Builder(this, getString(R.string.admob_native));

    builder.forUnifiedNativeAd(new UnifiedNativeAd.OnUnifiedNativeAdLoadedListener() {
        @Override
        public void onUnifiedNativeAdLoaded(UnifiedNativeAd unifiedNativeAd) {
            // You must call destroy on old ads when you are done with them,
            // otherwise you will have a memory leak.
            if (nativeAd != null) {
                nativeAd.destroy();
            }
            nativeAd = unifiedNativeAd;
            RelativeLayout frameLayout =
                    findViewById(R.id.fl_adplaceholder);
            UnifiedNativeAdView adView = (UnifiedNativeAdView) getLayoutInflater()
                    .inflate(R.layout.ad_unified, null);
            populateUnifiedNativeAdView(unifiedNativeAd, adView);
            frameLayout.removeAllViews();
            frameLayout.addView(adView);
        }

    });

    VideoOptions videoOptions = new VideoOptions.Builder()
            .build();

    NativeAdOptions adOptions = new NativeAdOptions.Builder()
            .setVideoOptions(videoOptions)
            .build();

    builder.withNativeAdOptions(adOptions);

    AdLoader adLoader = builder.withAdListener(new AdListener() {
        @Override
        public void onAdFailedToLoad(int errorCode) {

            Log.w("asdsadsad", "ads" + errorCode);
        }
    }).build();

    adLoader.loadAd(new AdRequest.Builder()
            .build());
}

} **these imports or not resolve** import com.anchorfree.hydrasdk.HydraSdk; import com.anchorfree.hydrasdk.api.response.RemainingTraffic; import com.anchorfree.hydrasdk.callbacks.Callback; import com.anchorfree.hydrasdk.exceptions.HydraException; import com.anchorfree.hydrasdk.vpnservice.VPNState;`

in build.gradle implementation 'com.github.AnchorFreePartner.hydra-sdk-android:sdk:3.3.1' implementation 'com.github.AnchorFreePartner.hydra-sdk-android:openvpn:3.3.1'

in other build.gradle allprojects { repositories { google() jcenter() mavenCentral() maven { url "https://www.jitpack.io" } maven { url 'https://maven.google.com' } } }

Error Log: error: cannot find symbol import com.anchorfree.hydrasdk.SessionConfig; ^ symbol: class SessionConfig location: package com.anchorfree.hydrasdk

[timoshenkoav]

Hello! Please follow documentation on migration to 3.* https://developer.anchorfree.com/#docs/all/unify_sdk_hydra__openvpn_for_android Section "SDK version migration" 2.4.1 -> 3.0.0