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Start your free trialcurtis Christie
1,811 PointsColour Wheel is not changing to other colours only red
I have gone through this tutorial over and over again and I still keep getting this problem with the colour wheel. When I run the app and I click on "show another fun fact" the next fact is displayed with red background only but not with a different background colour. What am I doing wrong ?
Code is below
FUNFACTACTIVITY.JAVA
package com.example.curtis.funfacts;
import android.graphics.Color; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.widget.Button; import android.widget.RelativeLayout; import android.widget.TextView;
public class FunFactsActivity extends AppCompatActivity { private FactBook mFactBook = new FactBook(); private ColorWheel mColorWheel = new ColorWheel();
//Declare our View variables
private TextView mFactTextView;
private Button mShowFactButton;
private RelativeLayout mRelativeLayout;
private ColorWheel mColorWheel = new ColorWheel();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fun_facts);
//Assign the views from the layout file to the corresponding variables
mFactTextView = (TextView)findViewById(R.id.factTextView);
mShowFactButton = (Button) findViewById(R.id.showFactButton);
mRelativeLayout = (RelativeLayout) findViewById(R.id.relativeLayout);
View.OnClickListener Listener = new View.OnClickListener(){
@Override
public void onClick(View view) {
//update the label with our dynamic fact
String fact = mFactBook.getFact();
int color = mColorWheel.getColor();
// update the screen with our dynamic fact
mFactTextView.setText(fact);
mRelativeLayout.setBackgroundColor(Color.RED);
}
};
mShowFactButton.setOnClickListener(Listener);
}
}
COLORWHEEL.JAVA package com.example.curtis.funfacts.test;
import android.graphics.Color;
import java.util.Random;
/**
-
Created by Curtis on 23/11/2015. */ public class ColorWheel {
// member variable ( properties about the object ) public String[] mColors= { "#39add1", "#3079ab", "#c25975", "#e15258", "#f9845b", "#838cc7", "#7d669e", "#53bbb4", "#51b46d", "#e0ab18", "#637a91", "#f092b0", "#b7c0c7" }; // method (abilities : things the object can do ) public int getColor(){ //update fct label with new fact String color = "";
// randomly select a fact Random randomGenerator = new Random();//construct a new random number generator int randomNumber = randomGenerator.nextInt(mColors.length); //convert random number to text fact color = mColors[randomNumber]; int colorAsInt = Color.parseColor(color); return colorAsInt;
} }
2 Answers
jcorum
71,830 PointsCheck out this statement in your FunFactsActivity class:
mRelativeLayout.setBackgroundColor(Color.RED);
Hunter Dishner
15,086 PointsmRelativeLayout.setBackgroundColor(color);