How can i get the information from dialog android studio - android-studio

Question

I want to save some data from the dialog to use it in my app, but after enetering the data and going to the next step my app is crushing instantly (after pressing on Create).So i'm practicing with a textView(fragment layout). What should i do, bcs i didn't manage even with an method or class .Actually my purpose is to print in the text ,the input without crashing.
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.TextView;
import androidx.appcompat.app.AlertDialog;
import androidx.fragment.app.Fragment;
import com.google.android.material.floatingactionbutton.FloatingActionButton;
public class Passwords_Fragment extends Fragment {
FloatingActionButton floating_button;
AlertDialog dialog;
TextView text;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view= inflater.inflate(R.layout.fragment_passwords_, container, false);
floating_button=view.findViewById(R.id.floatingActionButton);
buildDialog();
floating_button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
dialog.show();
}
});
return view;
}
private void buildDialog(){
AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
View view = getLayoutInflater().inflate(R.layout.dialog,null);
EditText name_of_platform=view.findViewById(R.id.platform_name);
EditText name_of_password=view.findViewById(R.id.password_name);
builder.setView(view)
.setTitle("Save a new password")
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
}
})
.setPositiveButton("Create", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
addItem(name_of_platform.getText().toString()); // my app crashes here
}
});
dialog=builder.create();
}
private void addItem(String name){
View view = getLayoutInflater().inflate((R.layout.item),null);
TextView text= view.findViewById(R.id.textView2);
text.setText(name);
}
}```
My error at Logcat:
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference
at com.example.passowrdgenerator.Passwords_Fragment.buildDialog(Passwords_Fragment.java:65)
at com.example.passowrdgenerator.Passwords_Fragment.onCreateView(Passwords_Fragment.java:32)
at androidx.fragment.app.Fragment.performCreateView(Fragment.java:3104)
at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:524)
at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:261)
at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:1890)
at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:1808)
at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:1751)
at androidx.fragment.app.FragmentManager$5.run(FragmentManager.java:538)
at android.os.Handler.handleCallback(Handler.java:942)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:201)
at android.os.Looper.loop(Looper.java:288)
at android.app.ActivityThread.main(ActivityThread.java:7898)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:936)