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Wannabe Engineer
9,186 PointsCannot resolve symbol "R"
The code works perfectly, its just that curly red underlines on R symbols :\ Here's the code :
package com.example.android.funfacts;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class FunFactsActivity extends AppCompatActivity {
// Declare our View variables
private TextView mFactTextView;
private Button mShowFactButton;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fun_facts);
// Assign the View from the layout file to the corresponding variables
mFactTextView = (TextView) findViewById(R.id.factTextView);
mShowFactButton = (Button) findViewById(R.id.showFactButton);
View.OnClickListener listener = new View.OnClickListener() {
@Override
public void onClick(View v) {
// The button was clicked so update the fact textView with a new fact
String fact = "Ostriches can run faster than horses.";
mFactTextView.setText(fact);
}
};
mShowFactButton.setOnClickListener(listener);
}
1 Answer

Seth Kroger
56,403 PointsFirst do a Clean and Rebuild. Then if that didn't fix the issue look for errors in your layout file.