java.lang.IllegalArgumentException: No suitable parent found from the given view. Please provide a valid view

Question

my app crashes when trying to display server message and I think the problem could be with my getView(). below is the registerActivity were the crash occurs and my activity_register.xml

import android.app.Activity; import android.app.ProgressDialog; import android.content.Intent; import android.os.Bundle; import android.support.design.widget.Snackbar; import android.util.Log; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.ProgressBar; import android.widget.Toast;  import com.fastchat.helper.SQLiteHandler; import com.fastchat.helper.SessionManager; import com.google.gson.Gson; import com.google.gson.GsonBuilder;  import retrofit2.Call; import retrofit2.Callback; import retrofit2.Retrofit; import retrofit2.converter.gson.GsonConverterFactory;   public class RegisterActivity extends Activity {  private static final String TAG = RegisterActivity.class.getSimpleName(); private Button btnRegister; private Button btnLinkToLogin; private EditText inputFullName; private EditText inputEmail; private EditText inputPassword; private ProgressDialog pDialog; private SessionManager session; private SQLiteHandler db; private ProgressBar progress;   @Override protected void onCreate(Bundle savedInstanceState) {     super.onCreate(savedInstanceState);     setContentView(R.layout.activity_register);       inputFullName = (EditText) findViewById(R.id.name);     inputEmail = (EditText) findViewById(R.id.email);     inputPassword = (EditText) findViewById(R.id.password);     btnRegister = (Button) findViewById(R.id.btnRegister);     btnLinkToLogin = (Button) findViewById(R.id.btnLinkToLoginScreen);      // Progress dialog     pDialog = new ProgressDialog(this);     pDialog.setCancelable(true);      /*     // Session manager     session = new SessionManager(getApplicationContext());      // SQLite database handler     db = new SQLiteHandler(getApplicationContext());      // Check if user is already logged in or not    if (session.isLoggedIn()) {         // User is already logged in. Take him to main activity         Intent intent = new Intent(RegisterActivity.this,                 SearchableActivity.class);         startActivity(intent);         finish();      } */     // Register Button Click event     btnRegister.setOnClickListener(new View.OnClickListener() {         public void onClick(View view) {             String name = inputFullName.getText().toString();             String email = inputEmail.getText().toString();             String password = inputPassword.getText().toString();              if (!name.isEmpty() && !email.isEmpty() && !password.isEmpty()) {                 registerProcess(name, email, password);             } else {                 Toast.makeText(getApplicationContext(),                         "Please enter your details!", Toast.LENGTH_LONG)                         .show();             }         }     });      // Link to Login Screen     btnLinkToLogin.setOnClickListener(new View.OnClickListener() {          public void onClick(View view) {             Intent i = new Intent(getApplicationContext(),                     LoginActivity.class);             startActivity(i);             finish();         }     });  }      private void registerProcess(String name,String email,String password){      String tag_string_req = "req_register";     //pDialog = new AlertDialog.Builder(getActivity());     pDialog.setMessage("please wait");     pDialog.show();       Retrofit retrofit = new Retrofit.Builder()             .baseUrl(Constants.BASE_URL)             .addConverterFactory(GsonConverterFactory.create())             .build();      RequestInterface requestInterface = retrofit.create(RequestInterface.class);      User user = new User();     user.setName(name);     user.setEmail(email);     user.setPassword(password);     ServerRequest request = new ServerRequest();     request.setOperation(Constants.REGISTER_OPERATION);     request.setUser(user);     Call<ServerResponse> response = requestInterface.operation(request);      response.enqueue(new Callback<ServerResponse>() {         private View view;          public View getView() {             return view;          }          @Override         public void onResponse(Call<ServerResponse> call, retrofit2.Response<ServerResponse> response) {              ServerResponse resp = response.body();             if(resp !=null)//tried to check if resp is null but its not  //crash occurs here             Snackbar.make(getView(),resp.getMessage(), Snackbar.LENGTH_LONG).show();             pDialog.dismiss();         }           @Override         public void onFailure(Call<ServerResponse> call, Throwable t) {             // progress.setVisibility(View.INVISIBLE);             Log.d(Constants.TAG, "failed");             Toast.makeText(getApplicationContext(), t.getLocalizedMessage(), Toast.LENGTH_LONG).show();             pDialog.dismiss();           }     }); } 

activity_register.xml

  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" xmlns:tools="http://schemas.android.com/tools" android:background="@color/bg_register" android:gravity="center" android:orientation="vertical" android:padding="10dp" android:id="@+id/chat">  <LinearLayout     android:layout_width="fill_parent"     android:layout_height="wrap_content"     android:layout_gravity="center"     android:orientation="vertical"     android:paddingLeft="20dp"     android:paddingRight="20dp" >      <ImageView         android:layout_width="389dp"         android:layout_height="72dp"         android:layout_gravity="center_horizontal"         android:layout_marginBottom="24dp"         android:src="@drawable/logo"         tools:ignore="ContentDescription" />       <EditText         android:id="@+id/name"         android:layout_width="fill_parent"         android:layout_height="wrap_content"         android:layout_marginBottom="10dp"         android:background="@color/input_register_bg"         android:hint="@string/hint_name"         android:padding="10dp"         android:singleLine="true"         android:inputType="textCapWords"         android:textColor="@color/input_register"         android:textColorHint="@color/input_register_hint" />      <EditText         android:id="@+id/email"         android:layout_width="fill_parent"         android:layout_height="wrap_content"         android:layout_marginBottom="10dp"         android:background="@color/input_register_bg"         android:hint="@string/hint_email"         android:inputType="textEmailAddress"         android:padding="10dp"         android:singleLine="true"         android:textColor="@color/input_register"         android:textColorHint="@color/input_register_hint" />      <EditText         android:id="@+id/password"         android:layout_width="fill_parent"         android:layout_height="wrap_content"         android:layout_marginBottom="10dp"         android:background="@color/input_register_bg"         android:hint="@string/hint_password"         android:inputType="textPassword"         android:padding="10dp"         android:singleLine="true"         android:textColor="@color/input_register"         android:textColorHint="@color/input_register_hint" />      <!-- Login Button -->      <Button         android:id="@+id/btnRegister"         android:layout_width="fill_parent"         android:layout_height="wrap_content"         android:layout_marginTop="20dip"         android:background="#ea4c88"         android:text="register"         android:textColor="@color/white" />      <!-- Link to Login Screen -->      <Button         android:id="@+id/btnLinkToLoginScreen"         android:layout_width="fill_parent"         android:layout_height="wrap_content"         android:layout_marginTop="40dip"         android:background="@null"         android:text="already a member? login"         android:textAllCaps="false"         android:textColor="@color/white"         android:textSize="15dp" /> </LinearLayout> 

below is logcat message

 java.lang.IllegalArgumentException: No suitable parent found from the given view. Please provide a valid view.                                                               at android.support.design.widget.Snackbar.make(Snackbar.java:137)                                                               at com.chat.RegisterActivity$3.onResponse(RegisterActivity.java:143)                                                               at retrofit2.ExecutorCallAdapterFactory$ExecutorCallbackCall$1$1.run(ExecutorCallAdapterFactory.java:68)                                                               at android.os.Handler.handleCallback(Handler.java:739)                                                               at android.os.Handler.dispatchMessage(Handler.java:95) 

Answer 1

I suggest that you to try with findViewById(android.R.id.content).

This is what did the trick for me:

Snackbar.make(findViewById(android.R.id.content), resp.getMessage(), Snackbar.LENGTH_LONG).show(); 

android.R.id.content will give you the root element of the view (for more information on that, please check Android: What is android.R.id.content used for?).

Answer 2

I found one solution that may help others who are looking for common solution.

I got this error when I have tried to show message with Snackbar before loading our whole XML file.

In fragment I have tried to call API in onCreateView(); and showing Snackbar message of Internet connection is off as below:

@Override public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,                          Bundle savedInstanceState) {      mBindingObject = DataBindingUtil.inflate(inflater, getLayoutResId(), container, false);      getData();      return mBindingObject.getRoot(); } 

I just put that method in onViewCreated()

@Override public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {     super.onViewCreated(view, savedInstanceState);      getData(); } 

Its working for me now.

BONUS:

Always try to use view after its loaded successfully. Each and every position of one line is matters.

Thank you.