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Start your free trialTommy Binkley
18,584 PointsPlease Help!!
I did everything in the lesson that it told me to do. By cleaning up the code. And i have zero errors on android studio and then i went to run the app and it pops up fine then when i go to click the button the "Fact" goes blank and if i keep clicking it nothing happens and i cant get the other "Fun Facts" to pop up.
Tommy Binkley
18,584 Pointspackage tribe.funfacts;
import android.app.Activity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.Button; import android.widget.TextView;
import java.util.Random;
public class FunFactsActivity extends Activity {
private FactBook mFactBook = new FactBook();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fun_facts);
//Declare our View variables and assign them the views from the layout file
final TextView factLabel = (TextView) findViewById(R.id.factTextView);
Button showFactButton = (Button) findViewById(R.id.showFactButton);
View.OnClickListener listener = new View.OnClickListener() {
@Override
public void onClick(View view) {
String Fact = mFactBook.getFact();
//Update the label with our dynamic fact
factLabel.setText("");
}
};
showFactButton.setOnClickListener(listener);
}
}
Tommy Binkley
18,584 Pointspackage tribe.funfacts;
import java.util.Random;
/**
-
Created by admin on 4/5/15. */ public class FactBook {
// Member variable (properties about the object public String[] mFacts = { "Ants stretch when they wake up in the morning.", "Ostriches can run faster than horses.", "Olympic gold medals are actually made mostly of silver.", "You are born with 300 bones; by the time you are an adult you will have 206.", "It takes about 8 minutes for light from the Sun to reach Earth.", "Some bamboo plants can grow almost a meter in just one day.", "The state of Florida is bigger than England.", "Some penguins can leap 2-3 meters out of the water.", "On average, it takes 66 days to form a new habit.", "Mammoths still walked the earth when the Great Pyramid was being built." };
// Method (abilities; things the object can do) public String getFact(){
String fact = ""; //Randomly select a fact Random randomGenerator = new Random(); //Construct a new Random number generator int randomNumber = randomGenerator.nextInt(mFacts.length); fact = mFacts[randomNumber]; return fact;
} }
2 Answers
James Simshaw
28,738 PointsHello,
In your onClickListener, you are using factLabel.setText(""); which is setting your label to be an empty string. Instead of "" you want to pass in your fact.
Tommy Binkley
18,584 PointsThanks so much it worked!! I had String Fact = mFactBook.getFact(); instead of String fact = mFactBook.getFact(); with a lower case f so when i did what you told me to and it came up an error then i changed it to lower case and it worked thanks!!
hrg
7,936 PointsThis is somewhat related, so I'll post here in case it helps someone. I had everything on that line typed correctly, but I had left the "" around the word fact in the parens. So I was getting the word fact popping up every time I hit the button. I saw the answer James posted and it gave me my a-ha moment.
James Simshaw
28,738 PointsJames Simshaw
28,738 PointsCould you please post your code so we can assist you?