Setsupportactionbar Toolbar Cannot Be Applied to (Android.Widget.Toolbar) Error

setSupportActionBar toolbar cannot be applied to (android.widget.Toolbar) error

In your Activity.java import android.support.v7.widget.Toolbar instead of android.widget.Toolbar:

import android.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.support.v7.widget.Toolbar;

public class rutaActivity extends AppCompactActivity {

private Toolbar toolbar;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_ruta);

    getSupportActionBar().hide();//Ocultar ActivityBar anterior

    toolbar = (Toolbar) findViewById(R.id.app_bar);
    setSupportActionBar(toolbar); //NO PROBLEM !!!!

Update:

If you are using androidx, replace

import android.support.v7.widget.Toolbar;
import android.support.v7.app.AppCompatActivity;

with newer imports

import androidx.appcompat.widget.Toolbar;
import androidx.appcompat.app.AppCompatActivity;

How to resolve the Android error method setSupportActionBar in class AppCompatActivity cannot be applied to given types?

First of all appcompat 23.0.3 doesn't exist.

Use 23.0.1

com.android.support:appcompat-v7:23.0.1

Then the method setSupportActionBar works with android.support.v7.widget.Toolbar.

Check the import in your code.

When you are using the Toolbar,you have to use the right import:

import android.support.v7.widget.Toolbar;

Finally also in your layout, you have to use the right widget.

<android.support.v7.widget.Toolbar
    ..... />

setSupportActionBar cannot be applied to android.support.v7.widget.Toolbar

Looks like it's a typo, and you're calling getSupportActionBar() (with a g) instead of setSupportActionBar().

setSupportActionBar in AppCompactActivity cannot be applied android

All the v7 libraries are used to support devices with old android versions. If you want to provide a the support use import android.support.v7.widget.Toolbar with setSupportActionBar()

Otherwise as in your case you have import android.widget.Toolbar; so use setActionBar() instead.

Toolbar error on Java android studio application

In java activity file remove the the Toolbar from android.widget package

import  android.widget.Toolbar;

And add androidx Toolbar from androidx.appcompat.widget package instead

import androidx.appcompat.widget.Toolbar;

setSupportActionBar cannot be applied

You need to change your import from,

import android.widget.Toolbar;

to

import android.support.v7.widget.Toolbar;

or

In Androidx you can use

import androidx.appcompat.widget.Toolbar;

This will surely solve the problem.

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