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Can't make http request in android

I am trying to make a simple android app that makes a request to google, the expected behavior that my app should make a connection to google and then stop, what I got this error
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.myapplication, PID: 4431
java.lang.IllegalStateException: Could not execute method for android:onClick
at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:414)
at android.view.View.performClick(View.java:7339)
at android.widget.TextView.performClick(TextView.java:14275)
at com.google.android.material.button.MaterialButton.performClick(MaterialButton.java:1119)
at android.view.View.performClickInternal(View.java:7305)
at android.view.View.access$3200(View.java:846)
at android.view.View$PerformClick.run(View.java:27787)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7078)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:964)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:409)
at android.view.View.performClick(View.java:7339) 
at android.widget.TextView.performClick(TextView.java:14275) 
at com.google.android.material.button.MaterialButton.performClick(MaterialButton.java:1119) 
at android.view.View.performClickInternal(View.java:7305) 
at android.view.View.access$3200(View.java:846) 
at android.view.View$PerformClick.run(View.java:27787) 
at android.os.Handler.handleCallback(Handler.java:873) 
at android.os.Handler.dispatchMessage(Handler.java:99) 
at android.os.Looper.loop(Looper.java:214) 
at android.app.ActivityThread.main(ActivityThread.java:7078) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:964) 
Caused by: android.os.NetworkOnMainThreadException
at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1513)
at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:117)
at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:105)
at java.net.InetAddress.getAllByName(InetAddress.java:1154)
at com.android.okhttp.Dns$1.lookup(Dns.java:39)
at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:196)
at com.android.okhttp.internal.http.RouteSelector.nextProxy(RouteSelector.java:144)
at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:89)
at com.android.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:190)
at com.android.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:142)
at com.android.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:104)
at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:392)
at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:325)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:488)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:131)
at com.example.myapplication.HttpRequest.request(HttpRequest.java:25)
at com.example.myapplication.MainActivity.onClick(MainActivity.java:64)
at java.lang.reflect.Method.invoke(Native Method) 
at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:409) 
at android.view.View.performClick(View.java:7339) 
at android.widget.TextView.performClick(TextView.java:14275) 
at com.google.android.material.button.MaterialButton.performClick(MaterialButton.java:1119) 
at android.view.View.performClickInternal(View.java:7305) 
at android.view.View.access$3200(View.java:846) 
at android.view.View$PerformClick.run(View.java:27787) 
at android.os.Handler.handleCallback(Handler.java:873) 
at android.os.Handler.dispatchMessage(Handler.java:99) 
at android.os.Looper.loop(Looper.java:214) 
at android.app.ActivityThread.main(ActivityThread.java:7078) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:964) 
I am working on android studio 4.1.2 with API 30,I am running the app on my phone with android 9 Pie.
My app has one button that makes a request, the that being executed is right here:
public void onClick(View view) {
try {
URL url = new URL("http://www.google.com/");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.connect();
//do something
conn.disconnect();
} catch (IOException e) {
e.printStackTrace();
}
}
I have tried solutions that I found on internet but nothing work,I tried to edit my AndroidManifest.xml and I ended with this:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.myapplication">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:networkSecurityConfig="#xml/network_security_config"
android:usesCleartextTraffic="true"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/Theme.MyApplication">
<activity android:name=".MainActivity2"></activity>
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
I created a file network_security_config.xml:
<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
<domain-config cleartextTrafficPermitted="true">
<domain includeSubdomains="true">google.com</domain>
</domain-config>
</network-security-config>
I am new to mobile development and I don't understand everything in the xml fils so maybe there is obvious mistake but I don't see it.
Thank you for your help.

According to your error log, your problem is you're attempting to connect to the internet on the main thread. Android does not allow you to setup an internet connection on the main thread because that would freeze up everything else while it makes the connection. You need to connect on a different thread.
EDIT: In light of AsyncTask being depreciated, the recommended alternatives appear to be using the interfaces contained in java.util.concurrent to make threads and/or threadpools or the coroutine libraries for Kotlin. Be sure to check the documentation and make a thread that establishes the connection in the background.

Runtime error on newly created google map activity

I just created a new google map activity in android studio but its giving runtime error. i am also using firebase in this project. im not that new in android development but this is my first time using google maps api. kindly help
MapsActivity.java
package com.dreamfighter.roomrental;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {
private GoogleMap mMap;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
}
/**
* Manipulates the map once available.
* This callback is triggered when the map is ready to be used.
* This is where we can add markers or lines, add listeners or move the camera. In this case,
* we just add a marker near Sydney, Australia.
* If Google Play services is not installed on the device, the user will be prompted to install
* it inside the SupportMapFragment. This method will only be triggered once the user has
* installed Google Play services and returned to the app.
*/
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
// Add a marker in Sydney and move the camera
// LatLng sydney = new LatLng(-34, 151);
// mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney"));
// mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));
}
}
activty_maps.xml
<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:map="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MapsActivity" />
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.dreamfighter.roomrental">
<!-- To auto-complete the email text field in the login form with the user's emails -->
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="i dont want my api key on stack overflow" />
<activity
android:name=".MainActivity"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".LoginActivity"
android:label="#string/title_activity_login" />
<activity
android:name=".RegisterActivity"
android:label="#string/title_activity_register" />
<activity android:name=".single_full_post" />
<activity
android:name=".MapsActivity"
android:label="#string/title_activity_maps"></activity>
</application>
</manifest>
Error:
11-24 02:05:00.185 14219-14219/com.dreamfighter.roomrental E/BoostFramework: BoostFramework() : Exception_1 = java.lang.ClassNotFoundException: Didn't find class "com.qualcomm.qti.Performance" on path: DexPathList[[],nativeLibraryDirectories=[/system/lib64, /vendor/lib64]]
11-24 02:05:00.397 14219-14219/com.dreamfighter.roomrental E/UncaughtException: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.dreamfighter.roomrental/com.dreamfighter.roomrental.MapsActivity}: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class fragment
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2927)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2988)
at android.app.ActivityThread.-wrap14(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1631)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6682)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1520)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410)
Caused by: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class fragment
Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class fragment
Caused by: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment com.google.android.gms.maps.SupportMapFragment: calling Fragment constructor caused an exception
at android.support.v4.app.Fragment.instantiate(Fragment.java:481)
at android.support.v4.app.FragmentContainer.instantiate(FragmentContainer.java:33)
at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:3664)
at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:111)
at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:338)
at android.support.v4.app.BaseFragmentActivityApi14.onCreateView(BaseFragmentActivityApi14.java:39)
at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:67)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:784)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:734)
at android.view.LayoutInflater.inflate(LayoutInflater.java:496)
at android.view.LayoutInflater.inflate(LayoutInflater.java:427)
at android.view.LayoutInflater.inflate(LayoutInflater.java:378)
at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:446)
at android.app.Activity.setContentView(Activity.java:2544)
at com.dreamfighter.roomrental.MapsActivity.onCreate(MapsActivity.java:20)
at android.app.Activity.performCreate(Activity.java:6942)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1126)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2880)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2988)
at android.app.ActivityThread.-wrap14(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1631)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6682)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1520)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.newInstance0(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:430)
at android.support.v4.app.Fragment.instantiate(Fragment.java:459)
at android.support.v4.app.FragmentContainer.instantiate(FragmentContainer.java:33) 
at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:3664) 
at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:111) 
at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:338) 
at android.support.v4.app.BaseFragmentActivityApi14.onCreateView(BaseFragmentActivityApi14.java:39) 
at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:67) 
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:784) 
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:734) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:496) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:427) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:378) 
at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:446) 
at android.app.Activity.setContentView(Activity.java:2544) 
at com.dreamfighter.roomrental.MapsActivity.onCreate(MapsActivity.java:20) 
at android.app.Activity.performCreate(Activity.java:6942) 
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1126) 
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2880) 
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2988) 
at android.app.ActivityThread.-wrap14(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1631) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:154) 
at android.app.ActivityThread.main(ActivityThread.java:6682) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1520) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410) 
Caused by: java.lang.IllegalAccessError: Class com.google.android.gms.dynamic.zza extended by class com.google.android.gms.maps.SupportMapFragment$zzb is inaccessible (declaration of 'com.google.android.gms.maps.SupportMapFragment$zzb' appears in /data/app/com.dreamfighter.roomrental-1/split_lib_dependencies_apk.apk:classes2.dex)
at java.lang.reflect.Constructor.newInstance0(Native Method) 
at java.lang.reflect.Constructor.newInstance(Constructor.java:430) 
at android.support.v4.app.Fragment.instantiate(Fragment.java:459) 
at android.support.v4.app.FragmentContainer.instantiate(FragmentContainer.java:33) 
at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:3664) 
at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:111) 
at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:338) 
at android.support.v4.app.BaseFragmentActivityApi14.onCreateView(BaseFragmentActivityApi14.java:39) 
at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:67) 
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:784) 
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:734) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:496) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:427) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:378) 
at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:446) 
at android.app.Activity.setContentView(Activity.java:2544) 
at com.dreamfighter.roomrental.MapsActivity.onCreate(MapsActivity.java:20) 
at android.app.Activity.performCreate(Activity.java:6942) 
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1126) 
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2880) 
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2988) 
at android.app.ActivityThread.-wrap14(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1631) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:154) 
at android.app.ActivityThread.main(ActivityThread.java:6682) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1520) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410) 
--------- beginning of crash
11-24 02:05:00.397 14219-14219/com.dreamfighter.roomrental E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.dreamfighter.roomrental, PID: 14219
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.dreamfighter.roomrental/com.dreamfighter.roomrental.MapsActivity}: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class fragment
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2927)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2988)
at android.app.ActivityThread.-wrap14(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1631)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6682)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1520)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410)
Caused by: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class fragment
Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class fragment
Caused by: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment com.google.android.gms.maps.SupportMapFragment: calling Fragment constructor caused an exception
at android.support.v4.app.Fragment.instantiate(Fragment.java:481)
at android.support.v4.app.FragmentContainer.instantiate(FragmentContainer.java:33)
at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:3664)
at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:111)
at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:338)
at android.support.v4.app.BaseFragmentActivityApi14.onCreateView(BaseFragmentActivityApi14.java:39)
at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:67)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:784)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:734)
at android.view.LayoutInflater.inflate(LayoutInflater.java:496)
at android.view.LayoutInflater.inflate(LayoutInflater.java:427)
at android.view.LayoutInflater.inflate(LayoutInflater.java:378)
at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:446)
at android.app.Activity.setContentView(Activity.java:2544)
at com.dreamfighter.roomrental.MapsActivity.onCreate(MapsActivity.java:20)
at android.app.Activity.performCreate(Activity.java:6942)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1126)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2880)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2988)
at android.app.ActivityThread.-wrap14(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1631)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6682)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1520)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.newInstance0(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:430)
at android.support.v4.app.Fragment.instantiate(Fragment.java:459)
at android.support.v4.app.FragmentContainer.instantiate(FragmentContainer.java:33) 
at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:3664) 
at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:111) 
at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:338) 
at android.support.v4.app.BaseFragmentActivityApi14.onCreateView(BaseFragmentActivityApi14.java:39) 
at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:67) 
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:784) 
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:734) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:496) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:427) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:378) 
at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:446) 
at android.app.Activity.setContentView(Activity.java:2544) 
at com.dreamfighter.roomrental.MapsActivity.onCreate(MapsActivity.java:20) 
at android.app.Activity.performCreate(Activity.java:6942) 
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1126) 
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2880) 
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2988) 
at android.app.ActivityThread.-wrap14(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1631) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:154) 
at android.app.ActivityThread.main(ActivityThread.java:6682) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1520) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410) 
Caused by: java.lang.IllegalAccessError: Class com.google.android.gms.dynamic.zza extended by class com.google.android.gms.maps.SupportMapFragment$zzb is inaccessible (declaration of 'com.google.android.gms.maps.SupportMapFragment$zzb' appears in /data/app/com.dreamfighter.roomrental-1/split_lib_dependencies_apk.apk:classes2.dex)
at java.lang.reflect.Constructor.newInstance0(Native Method) 
at java.lang.reflect.Constructor.newInstance(Constructor.java:430) 
at android.support.v4.app.Fragment.instantiate(Fragment.java:459) 
at android.support.v4.app.FragmentContainer.instantiate(FragmentContainer.java:33) 
at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:3664) 
at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:111) 
at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:338) 
at android.support.v4.app.BaseFragmentActivityApi14.onCreateView(BaseFragmentActivityApi14.java:39) 
at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:67) 
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:784) 
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:734) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:496) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:427) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:378) 
at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:446) 
at android.app.Activity.setContentView(Activity.java:2544) 
at com.dreamfighter.roomrental.MapsActivity.onCreate(MapsActivity.java:20) 
at android.app.Activity.performCreate(Activity.java:6942) 
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1126) 
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2880) 
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2988) 
at android.app.ActivityThread.-wrap14(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1631) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:154) 
at android.app.ActivityThread.main(ActivityThread.java:6682) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1520) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410) 
Build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 26
defaultConfig {
applicationId "com.dreamfighter.roomrental"
minSdkVersion 21
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'
}
}
}
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support:design:26.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
implementation 'com.google.android.gms:play-services-maps:12.0.1'
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.google.firebase:firebase-core:16.0.1'
implementation 'com.google.firebase:firebase-auth:16.0.1'
implementation 'com.master.android:glideimageview:1.0'
implementation 'de.hdodenhof:circleimageview:2.2.0'
implementation 'com.google.android.gms:play-services:12.0.1'
}
apply plugin: 'com.google.gms.google-services'

I also had the same issue and I was resolved using the following steps.
It is mainly version issues. Firebase supports only latest versions. if you are using firebase analytics ( implementation 'com.google.firebase:firebase-core:16.0.1'), then we should use latest google services. so you are using 12.0.1, it would not support.
implementation 'com.google.android.gms:play-services-maps:15.0.1'
implementation 'com.google.android.gms:play-services-location:15.0.1'
The above versions resolved my problem.

Solution Found:
Replace classpath 'com.google.gms:google-services:4.0.1' to classpath 'com.google.gms:google-services:3.2.1' in project level build.gradle file.
Update
Solution Found again:
Error came back again after i added some more dependencies. Just Update all dependencies to their latest versions and it will solve the problem.

RecyclerView and CoordinatorLayout with id are crashing

When I started writing nested fragments I encountered an unexpected problem. When the application is killed by Android, e.g. when there is a small amount of free RAM, the application throws the following exception after resuming it.
E/Parcel: Class not found when unmarshalling: android.support.design.widget.CoordinatorLayout$SavedState
java.lang.ClassNotFoundException: android.support.design.widget.CoordinatorLayout$SavedState
at java.lang.Class.classForName(Native Method)
at java.lang.Class.forName(Class.java:453)
at android.os.Parcel.readParcelableCreator(Parcel.java:2888)
at android.os.Parcel.readParcelable(Parcel.java:2842)
at android.os.Parcel.readValue(Parcel.java:2745)
at android.os.Parcel.readSparseArrayInternal(Parcel.java:3195)
at android.os.Parcel.readSparseArray(Parcel.java:2407)
at android.os.Parcel.readValue(Parcel.java:2802)
at android.os.Parcel.readArrayMapInternal(Parcel.java:3114)
at android.os.BaseBundle.initializeFromParcelLocked(BaseBundle.java:273)
at android.os.BaseBundle.unparcel(BaseBundle.java:226)
at android.os.BaseBundle.putBoolean(BaseBundle.java:532)
at android.support.v4.app.Fragment.setUserVisibleHint(Fragment.java:960)
at android.support.v4.app.FragmentStatePagerAdapter.instantiateItem(FragmentStatePagerAdapter.java:121)
at android.support.v4.view.ViewPager.addNewItem(ViewPager.java:1004)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1186)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1086)
at android.support.v4.view.ViewPager$3.run(ViewPager.java:267)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:911)
at android.view.Choreographer.doCallbacks(Choreographer.java:723)
at android.view.Choreographer.doFrame(Choreographer.java:655)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:897)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
Caused by: java.lang.ClassNotFoundException: android.support.design.widget.CoordinatorLayout$SavedState
at java.lang.Class.classForName(Native Method)
at java.lang.BootClassLoader.findClass(ClassLoader.java:1355)
at java.lang.BootClassLoader.loadClass(ClassLoader.java:1415)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
at java.lang.Class.classForName(Native Method) 
at java.lang.Class.forName(Class.java:453) 
at android.os.Parcel.readParcelableCreator(Parcel.java:2888) 
at android.os.Parcel.readParcelable(Parcel.java:2842) 
at android.os.Parcel.readValue(Parcel.java:2745) 
at android.os.Parcel.readSparseArrayInternal(Parcel.java:3195) 
at android.os.Parcel.readSparseArray(Parcel.java:2407) 
at android.os.Parcel.readValue(Parcel.java:2802) 
at android.os.Parcel.readArrayMapInternal(Parcel.java:3114) 
at android.os.BaseBundle.initializeFromParcelLocked(BaseBundle.java:273) 
at android.os.BaseBundle.unparcel(BaseBundle.java:226) 
at android.os.BaseBundle.putBoolean(BaseBundle.java:532) 
at android.support.v4.app.Fragment.setUserVisibleHint(Fragment.java:960) 
at android.support.v4.app.FragmentStatePagerAdapter.instantiateItem(FragmentStatePagerAdapter.java:121) 
at android.support.v4.view.ViewPager.addNewItem(ViewPager.java:1004) 
at android.support.v4.view.ViewPager.populate(ViewPager.java:1186) 
at android.support.v4.view.ViewPager.populate(ViewPager.java:1086) 
at android.support.v4.view.ViewPager$3.run(ViewPager.java:267) 
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:911) 
at android.view.Choreographer.doCallbacks(Choreographer.java:723) 
at android.view.Choreographer.doFrame(Choreographer.java:655) 
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:897) 
at android.os.Handler.handleCallback(Handler.java:790) 
at android.os.Handler.dispatchMessage(Handler.java:99) 
at android.os.Looper.loop(Looper.java:164) 
at android.app.ActivityThread.main(ActivityThread.java:6494) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807) 
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack trace available
android.os.BadParcelableException: ClassNotFoundException when unmarshalling: android.support.design.widget.CoordinatorLayout$SavedState
at android.os.Parcel.readParcelableCreator(Parcel.java:2916)
at android.os.Parcel.readParcelable(Parcel.java:2842)
at android.os.Parcel.readValue(Parcel.java:2745)
at android.os.Parcel.readSparseArrayInternal(Parcel.java:3195)
at android.os.Parcel.readSparseArray(Parcel.java:2407)
at android.os.Parcel.readValue(Parcel.java:2802)
at android.os.Parcel.readArrayMapInternal(Parcel.java:3114)
at android.os.BaseBundle.initializeFromParcelLocked(BaseBundle.java:273)
at android.os.BaseBundle.unparcel(BaseBundle.java:226)
at android.os.BaseBundle.putBoolean(BaseBundle.java:532)
at android.support.v4.app.Fragment.setUserVisibleHint(Fragment.java:960)
at android.support.v4.app.FragmentStatePagerAdapter.instantiateItem(FragmentStatePagerAdapter.java:121)
at android.support.v4.view.ViewPager.addNewItem(ViewPager.java:1004)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1186)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1086)
at android.support.v4.view.ViewPager$3.run(ViewPager.java:267)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:911)
at android.view.Choreographer.doCallbacks(Choreographer.java:723)
at android.view.Choreographer.doFrame(Choreographer.java:655)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:897)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
This error occurs only if RecyclerView or CoordinatorLayout in tab fragment are assigned in xml android id.
In order to identify the error, I wrote an application in which I reproduced it.
https://github.com/RicomenPL/SampleBPE
How to reproduce it?
Enable "dont keep activies" in the development options on the smartphone or emulator
Turn on the SampleBPE application
Move to tabs left or right
Now you have to leave with the Home key
Enter again with the use of the recent apps key
Moving the tabs to the left or right will cause an error

The problem was solved when I downgrade my support libraries to version 26.1.0. This is a temporary solution, to avoid the problem. I hope that in version 28, this will be resolved.

Error inflating class info.hoang8f.widget.FButton

Error Log:
10-26 12:22:33.144 26926-26926/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: ksmk.sahip.com.ecom, PID: 26926
java.lang.RuntimeException: Unable to start activity ComponentInfo{ksmk.sahip.com.ecom/ksmk.sahip.com.ecom.MainActivity}: android.view.InflateException: Binary XML file line #0: Binary XML file line #0: Error inflating class info.hoang8f.widget.FButton
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2646)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756)
Caused by: android.view.InflateException: Binary XML file line #0: Binary XML file line #0: Error inflating class info.hoang8f.widget.FButton
Caused by: android.view.InflateException: Binary XML file line #0: Error inflating class info.hoang8f.widget.FButton
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.newInstance0(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:430)
at android.view.LayoutInflater.createView(LayoutInflater.java:645)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:787)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:727)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:858)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:821)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:861)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:821)
at android.view.LayoutInflater.inflate(LayoutInflater.java:518)
at android.view.LayoutInflater.inflate(LayoutInflater.java:426)
at android.view.LayoutInflater.inflate(LayoutInflater.java:377)
at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:289)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139)
at ksmk.sahip.com.ecom.MainActivity.onCreate(MainActivity.java:36)
at android.app.Activity.performCreate(Activity.java:6662)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2599)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756)
Caused by: java.lang.UnsupportedOperationException: Can't convert value at index 1 to color: type=0x5
at android.content.res.TypedArray.getColor(TypedArray.java:463)
at info.hoang8f.widget.FButton.parseAttrs(FButton.java:116)
at info.hoang8f.widget.FButton.(FButton.java:52)
at java.lang.reflect.Constructor.newInstance0(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:430)
at android.view.LayoutInflater.createView(LayoutInflater.java:645)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:787)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:727)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:858)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:821)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:861)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:821)
at android.view.LayoutInflater.inflate(LayoutInflater.java:518)
at android.view.LayoutInflater.inflate(LayoutInflater.java:426)
at android.view.LayoutInflater.inflate(LayoutInflater.java:377)
at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:289)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139)
at ksmk.sahip.com.ecom.MainActivity.onCreate(MainActivity.java:36)
at android.app.Activity.performCreate(Activity.java:6662)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2599)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756)
10-26 12:22:33.692 1305-1305/? E/EGL_emulation: tid 1305: eglCreateSyncKHR(1901): error 0x3004 (EGL_BAD_ATTRIBUTE)

use this dependency this is will solve error
implementation 'com.github.jd-alexander:android-flat-button:v1.1'
use this in code for casting the button
Button btn_CreateNewVideo;
btn_CreateNewVideo = (FButton) findViewById(R.id.createnewvideo);

As of this time the problem occurs in android gradle plugin version 3.0.0. So just change the android gradle plugin version to 2.3.3. You can change it in build.gradle (Project level) file, like:
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.3.3'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}

If you have updated your android studio version to 3.o then go to file -> Project Structure -> Project -> Change gradle plugin version to 2.3.0 and gradle version to 3.3
I hope this helps

Same Flat FButton theme can be found here:
Use the library as a dependency https://github.com/jd-alexander/android-flat-button
https://jitpack.io/#jd-alexander/android-flat-button/v1.1
dependencies {
implementation 'com.github.jd-alexander:android-flat-button:v1.1'
}

Another solution I have found
Change for:
Dependence {
implementation 'info.hoang8f:android-segmented:1.0.6'
}
or
You can change casting (FButton) to (Button) with same previous dependency

So, some time ago I've got the exactly same error 'cause my Android Studio Version is higher than the version for which info.hoang8f was implemented, so, step-by-step how to fix it:
In your build.gradle project:level add this line inside allprojects -> repositories: maven { url 'https://jitpack.io' }
In your build.gradle app:level add this line in dependencies: implementation 'com.github.jd-alexander:android-flat-button:v1.1'
Remove the implementation line of 'info.hoang8f...' and Clean Project;
Remember, this new implementation use fButtonColor, so, you need to change in your XML files app:buttonColor='#color/someColor' to: app:fButtonColor='#color/someColor'
Do not:
Change your Gradle Version, this can raise some implementation errors;

java.lang.NoSuchFieldError: No static field KL of type Lcom/google/android/gms/internal/zzsb$zzb

I'm trying to open a Camera Activity on my Android but I got this error when the Activity starts:
FATAL EXCEPTION: main
Process: bookreader.bookreader, PID: 19132
java.lang.NoSuchFieldError: No static field KL of type Lcom/google/android/gms/internal/zzsb$zzb; in class Lcom/google/android/gms/internal/zzsb; or its superclasses (declaration of 'com.google.android.gms.internal.zzsb' appears in /data/app/bookreader.bookreader-1/split_lib_dependencies_apk.apk:classes4.dex)
at com.google.android.gms.vision.text.internal.client.zze.zzcic(Unknown Source)
at com.google.android.gms.vision.text.internal.client.zze.<init>(Unknown Source)
at com.google.android.gms.vision.text.TextRecognizer$Builder.build(Unknown Source)
at bookreader.bookreader.CameraActivity.onCreate(CameraActivity.java:97)
at android.app.Activity.performCreate(Activity.java:6609)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1134)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3113)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3275)
at android.app.ActivityThread.access$1000(ActivityThread.java:218)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1744)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:7007)
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:1404)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)
I don't know how to solve it. In my Android Manifest, I have this:
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />

make sure everything is up to date inside your build.gradle
no such method/field/class error usually occur because of dependency version mismatch (obfuscated fields names may be different across versions)