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Codrin Postu
8,022 Points[Solved] My app crashes when I change the background color
When I try to change the Background Color my App Builds without errors but when I try to run the app it just crashes. Here is the code.
package com.withur.facttest;
import android.graphics.Color;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.RelativeLayout;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
// Declare our View variables
private FactBook factBook = new FactBook();
private RelativeLayout relativeLayout;
private TextView factTextView;
private Button showFactButton;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
relativeLayout = findViewById(R.id.mainLayout);
factTextView = findViewById(R.id.factTextView);
showFactButton = findViewById(R.id.showFactButton);
View.OnClickListener listener = new View.OnClickListener() {
@Override
public void onClick(View v) {
//Update the screen with a new fact
relativeLayout.setBackgroundColor(Color.RED);
factTextView.setText(factBook.getFact());
}
};
showFactButton.setOnClickListener(listener);
}
}
Edit: The issue was that I changed the layout to Constraint and didn't realize.

Lauren Moineau
9,483 PointsAwesome Codrin Postu ! I'm glad you fixed it :)
1 Answer

Codrin Postu
8,022 PointsOh Lauren Moineau that helped! I was using by accident ConstraintLayout because Relative Layout was throwing everything in the corner for me.
Lauren Moineau
9,483 PointsLauren Moineau
9,483 PointsHi Codrin. Could you copy/paste the error message you get in your logcat please? (using the "show only selected application" filter). Thanks