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

Question

I've been looking for an answer and I've tried many possible solutions, but nothing seems to work..

I'm trying to setup a Material Action Bar following this tutorial.

Here's my code:

tool_bar.xml:

<?xml version="1.0" encoding="utf-8"?> <android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:background="@color/ColorPrimary"     android:elevation="4dp">  </android.support.v7.widget.Toolbar> 

activity.xml:

<?xml version="1.0" encoding="utf-8"?> <android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"     android:id="@+id/drawer_layout"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:background="#FFFFFF">     <!-- The main content view -->     <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"         android:layout_width="match_parent"         android:layout_height="match_parent"         android:orientation="vertical">          <include             android:id="@+id/app_bar"             layout="@layout/tool_bar" />     </RelativeLayout>     <!-- Navigation Drawer -->     <ListView         android:id="@+id/left_drawer"         android:layout_width="220dp"         android:layout_height="match_parent"         android:layout_gravity="left"         android:background="#1C1C1C"         android:divider="@android:color/darker_gray"         android:dividerHeight="1dp" />  </android.support.v4.widget.DrawerLayout> 

And finally my activity.java:

import android.app.ActionBar; import android.support.v7.app.ActionBarActivity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.widget.Toolbar;   public class rutaActivity extends ActionBarActivity {  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); //HERE'S THE PROBLEM !!!! 

Error:

setSupporActionBar (android.support.v7.widget.Toolbar) in ActionBarActivity cannot be applied to (android.widget.Toolbar)

How can I fix this?

Answer 1

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; 

Answer 2

In using toolbar you should extends AppCompatActivity and

import android.support.v7.widget.Toolbar