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fragment binding (symbol "id" cannot be resolved)

I am trying to use the binding method in android studio to connect two fragments using onCreate and onViewCreated methods. so far i am getting id not resolved error. I have already connected the fragments on the xml graph. Bellow is the code of the settings java file.
package com.mqtt.workactiv.ui.settings;
import static android.os.Build.VERSION_CODES.R;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.lifecycle.ViewModelProvider;
import androidx.navigation.NavController;
import androidx.navigation.Navigation;
import com.mqtt.workactiv.databinding.FragmentSettingsBinding;
public class SettingsFragment extends Fragment {
private FragmentSettingsBinding binding;
public View onCreateView(#NonNull LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
SettingsViewModel settingsViewModel =
new ViewModelProvider(this).get(SettingsViewModel.class);
binding = FragmentSettingsBinding.inflate(inflater, container, false);
View root = binding.getRoot();
return root;
}
#Override
public void onViewCreated (#NonNull View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
NavController navController = Navigation.findNavController(view);
Button gateConnButton;
gateConnButton = view.findViewById(R.id.gatewayConnButton);
gateConnButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
navController.navigate(R.id.action_navigation_setting_to_gateway4);
}
});
}
}

Make sure to add this in build.gradle(app)
buildFeatures {
viewBinding = true
}
Then give sync project with gradle files.
If this didnt work, try rebuild, invalidate cache/ restart.
Also view.findviewbyid not required if view binding is enabled.
You can access button directly by something like this,
binding.gateConnButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
navController.navigate(R.id.action_navigation_setting_to_gateway4);
}
});

You can try code like this.
NavDirections navDirections = SettingsFragmentDirections.actionNavigationSettingToGateway4();
findNavController().navigate(navDirections, null);
I don't see your navigation xml file, so SettingsFragmentDirections.actionNavigationSettingToGateway4() can have another name. Fix those names yourself.
P.S. the versions of libraries which I'm using androidx.navigation:navigation-fragment-ktx:2.4.0, "androidx.navigation:navigation-ui-ktx:2.4.0"

Disable screenshots in React Native

I know that you can not 100% stop the user from taking a screenshot if he insists to. But I read that you can still stop manual screenshots by setting LayoutParams.FLAG_SECURE in Java.
I tried adding it to my MainApplication file but getWindow() kept on throwing errors no matter what I do. So I moved that line of code to the MainActivity file and it worked without any errors.
Problem is, I can still normally take screenshots.
MainApplication:
package com.testapp;
import android.app.Activity;
import com.reactnativenavigation.NavigationApplication;
import com.facebook.react.modules.i18nmanager.I18nUtil;
import com.facebook.react.ReactNativeHost;
import com.facebook.react.ReactPackage;
import com.facebook.react.shell.MainReactPackage;
import com.facebook.soloader.SoLoader;
import android.support.annotation.Nullable;
/* custom modules */
import com.oblador.vectoricons.VectorIconsPackage;
import org.pgsqlite.SQLitePluginPackage;
import com.learnium.RNDeviceInfo.RNDeviceInfo;
import java.util.Arrays;
import java.util.List;
public class MainApplication extends NavigationApplication {
#Override
public boolean isDebug() {
return BuildConfig.DEBUG;
}
#Nullable
#Override
public List<ReactPackage> createAdditionalReactPackages() {
return Arrays.<ReactPackage>asList(
new SQLitePluginPackage(),
new VectorIconsPackage(),
new RNDeviceInfo()
);
}
#Override
public void onCreate() {
super.onCreate();
I18nUtil sharedI18nUtilInstance = I18nUtil.getInstance();
sharedI18nUtilInstance.allowRTL(getApplicationContext(), false);
}
}
MainActivity:
package com.testapp;
import android.widget.ImageView;
import com.reactnativenavigation.controllers.SplashActivity;
import android.os.Bundle;
import android.view.WindowManager.LayoutParams;
public class MainActivity extends SplashActivity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().setFlags(LayoutParams.FLAG_SECURE, LayoutParams.FLAG_SECURE);
}
}

I did simply the following and it is working properly:
public class MainActivity extends AppCompatActivity
{
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE,
WindowManager.LayoutParams.FLAG_SECURE);
setContentView(R.layout.activity_main);
}
}

android java How to override toString of ParseUser in nested class

In Android, I am trying to override the toString() of the ParseUser for use in my listview, using
import android.os.Bundle;
import android.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import com.parse.FindCallback;
import com.parse.ParseException;
import com.parse.ParseQuery;
import com.parse.ParseUser;
import java.util.List;
/**
* A simple {#link Fragment} subclass.
*/
public class ExampleFragment extends Fragment {
public ExampleFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
final View rootView = inflater.inflate(R.layout.fragment_example, container, false);
final ListView listView = (ListView) rootView.findViewById(R.id.exampleListView);
ParseQuery query = User.getQuery();
query.findInBackground(new FindCallback<User>() {
public void done(List<User> objects, ParseException e) {
if (e == null) {
// The query was successful.
listView.setAdapter(new ArrayAdapter<User>(rootView.getContext(), android.R.layout.simple_list_item_1, objects));
for (User user : objects) {
Log.i("AppInfo", "Added " + user.toString());
}
} else {
// Something went wrong.
}
}
});
return rootView;
}
public class User extends ParseUser {
#Override
public String toString() {
Log.i("AppInfo", "Username: " + getUsername());
return getUsername();
}
}
}
Seems simple enough. I had this nested in my fragment class and it crashed with this
java.lang.ClassCastException: com.parse.ParseUser cannot be cast to com.mycompany.myproject.ExampleFragment$User
but when I move it into its own subclass (where it gets its own entry in the explorer view in android studio), it works perfectly.
Is there a reason it does not work nested in my fragment class? Seems a bit unnecessary to create its own subclass just to override one function.
UPDATE: If I remove the for loop part it does not error out, but it still does not call my overridden toString() as the listview returns com.parse.ParseUser#etcetcetc.

make sure you have do these 2 things
1.register class before Parse.initialize
ParseObject.registerSubclass(User.class);
2.use annotation to specified the class mapping to waht Class
#ParseClassName("_User")
public class User extends ParseUser {
...
}
here is the reference.
https://parse.com/docs/android/guide#objects-subclassing-parseobject

java.lang.ClassNotFoundException: com.hamweather.aeris.maps.R$layout using Aeris Weather SDK

I am using the Hamweather Aeris Andorid SDK, and I am trying to implement the map view component. When I follow their online tutorials, I can not render the AerisMapView, and I get the error:
java.lang.ClassNotFoundException: com.hamweather.aeris.maps.R$layout.
Does anyone know where this is coming from/how to fix it?
My xml file:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<com.hamweather.aeris.maps.AerisMapView
android:id="#+id/aerisfragment_map"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" >
</com.hamweather.aeris.maps.AerisMapView>
</LinearLayout>
And my Activity:
import android.app.Activity;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.view.Window;
public class MapViewActivity extends Activity{
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.mapview_activity);
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
MapFragment fragment = new MapFragment();
fragmentTransaction.add(R.id.frame_container, fragment);
fragmentTransaction.commit();
}
}
Finally, the fragment:
import android.location.*;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.google.android.gms.maps.model.LatLng;
import com.hamweather.aeris.communication.AerisCallback;
import com.hamweather.aeris.communication.EndpointType;
import com.hamweather.aeris.location.LocationHelper;
import com.hamweather.aeris.maps.AerisMapView;
import com.hamweather.aeris.maps.AerisMapView.AerisMapType;
import com.hamweather.aeris.maps.MapViewFragment;
import com.hamweather.aeris.maps.interfaces.OnAerisMapLongClickListener;
import com.hamweather.aeris.maps.interfaces.OnAerisMarkerInfoWindowClickListener;
import com.hamweather.aeris.maps.markers.AerisMarker;
import com.hamweather.aeris.model.AerisResponse;
import com.hamweather.aeris.response.EarthquakesResponse;
import com.hamweather.aeris.response.FiresResponse;
import com.hamweather.aeris.response.StormCellResponse;
import com.hamweather.aeris.response.StormReportsResponse;
public class MapFragment extends MapViewFragment implements OnAerisMapLongClickListener, AerisCallback,
OnAerisMarkerInfoWindowClickListener{
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.single_tab_site_weather2,
container, false);
mapView = (AerisMapView) view.findViewById(R.id.aerisfragment_map);
mapView.init(savedInstanceState, AerisMapType.GOOGLE);
initMap();
setHasOptionsMenu(true);
return view;
}
/**
* Inits the map with specific setting
*/
private void initMap() {
mapView.moveToLocation(new LatLng(34.7, -86.7), 9);
mapView.setOnAerisMapLongClickListener(this);
mapView.setOnAerisWindowClickListener(this);
}
#Override
public void onResult(EndpointType endpointType, AerisResponse aerisResponse) {
}
#Override
public void onMapLongClick(double v, double v1) {
}
#Override
public void wildfireWindowPressed(FiresResponse firesResponse, AerisMarker aerisMarker) {
}
#Override
public void stormCellsWindowPressed(StormCellResponse stormCellResponse, AerisMarker aerisMarker) {
}
#Override
public void stormReportsWindowPressed(StormReportsResponse stormReportsResponse, AerisMarker aerisMarker) {
}
#Override
public void earthquakeWindowPressed(EarthquakesResponse earthquakesResponse, AerisMarker aerisMarker) {
}
}
Also, this is my first Q on stack exchange, so if I failed to adhere to a certain convention or etiquette, please let me know, and I'll try to fix it. Thanks.

I Managed to get it working. For anyone who has this issue, here were my steps:
I first switched from using the jars to using the gradle dependency. Per their website, add the following to your build.gradle(the module one)
repositories {
mavenCentral()
}
dependencies {
compile 'com.google.android.gms:play-services:4.4.52'
compile 'com.hamweather:aeris-maps-library:1.0.0#aar'
}
Also be sure to add the following, in the andorid tag, which probably already exists in the file:
android {
...some other stuff...
dexOptions{
preDexLibraries = false
}
}
Double check that you have the proper API key permissions for google maps. Then it works. As far as I can tell, it had something to do with using the compiled jar, not the repo version.

Enum's working with .setText in android/java

I am building a Android app in Java, use a Enum variable in a .setText scenario for a XML TextView, i fully understand my Enum is in the wrong data type, but i need your help to work out a alternative to this.
The code where i'm using the setText:
package com.mastermind;
import java.util.ArrayList;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.TextView;
public class Guess_database extends Activity {
public ArrayList<Guess> guess_list;
public static int guess_counter = 0;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.guess_layout);
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
for (Guess g : guess_list) {
View stub = inflater.inflate(R.layout.guess_stub, null);
((TextView) stub.findViewById(R.id.guess)).setText(g.v1 + ", "+ g.v2);
((TextView)stub.findViewById(R.id.guess_positions)).setText(g.c1);
}
}
}
And here is the class for my Enum variable:
package com.mastermind;
import java.io.Serializable;
public class Guess implements Serializable
{
static int v1, v2, v3, v4;
public static GuessStatus c1,c2, c3, c4;
enum GuessStatus
{
CORRECT,
WRONG,
CORRECT_WRONG_PLACE;
}
}
Any help will be appreciated.

((TextView)stub.findViewById(R.id.guess_positions)).setText(g.c1.toString());