Welcome to the Treehouse Community
The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

Leonel Saldivar
459 PointsCannot resolve symbol 'showFactButton'
Hi, I have the error "Cannot resolve symbol 'showFactButton'. I've tried with the answers here at the community but couldn't fix it.
This is the java code:
package com.example.usuario.funfacts;
import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
// Declarar variables
private TextView mFactTextView;
private Button mShowFactButton;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Asignar las vistas del layout file al corresponding variables
mFactTextView = (TextView) findViewById(R.id.factortextView);
mShowFactButton = (Button) findViewById(R.id.showFactButton);
View.OnClickListener listener = new View.OnClickListener() {
@Override
public void onClick(View v) {
//the button was clicked so update with a new fact
String fact = "los perros son bien rapidos";
mFactTextView.setText(fact);
}
};
mShowFactButton.setOnClickListener(listener);
}
}
And this is the xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="com.example.usuario.funfacts.MainActivity" android:background="#39add1">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Che, sabías que...?"
android:id="@+id/textView2"
android:textSize="24dp"
android:textColor="#80ffffff" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="es un mundo muy extraño?"
android:id="@+id/factortextView"
android:layout_centerVertical="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:textSize="24sp"
android:textColor="#ffffff" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="¡Contame más guachín!"
android:id="@+id/factorbutton"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:background="@android:color/white" />
</RelativeLayout>
I hope someone can help me out. Best regards,
1 Answer

Seth Kroger
56,403 PointsThe id of your button in the XML is "factorbutton" but in the Java code you're using "showFactButton". You should only use one or the other, and make both of them the same name.
Leonel Saldivar
459 PointsLeonel Saldivar
459 PointsThank you!! It worked perfectly. Best