android.widget.Toolbar cannot be converted to android.support.v7.widget.Toolbar

Question

I have a toolbar.xml:

Answer 1

if your project is already migrated to AndroidX then import this
import androidx.appcompat.widget.Toolbar;

else migrate to AndroidX by
Refactor>Migrate to AndroidX Full code Example of XML and Java

    
        
            
            
        
    





package com.uafappdevelopers.example;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
//note this import
import androidx.appcompat.widget.Toolbar;
import com.uafappdevelopers.uafportal.R;
public class Events_Second_Activity extends AppCompatActivity {
//add this for the navigation back button click event
@Override
public boolean onSupportNavigateUp() {
    onBackPressed();
    finish();
    return super.onSupportNavigateUp();
}
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_event_second);
    //change id to Your id
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar_sec);
    setSupportActionBar(toolbar);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    getSupportActionBar().setDisplayShowHomeEnabled(true);
    setTitle("University of Agriculture Faisalabad");
}
}