CODEWITHSUNDEEP
javaandroidtogglebutton
Bijin Abraham
Bijin Abraham

Reputation: 2187

Toggle button to change the background color of the layout of the android app

Toggle button to change the background color of the layout of the Android app

I am trying to add a toggle button on the android studio that can change the background color of the app layout

    public void perform_action(View v) {
        g = (ToggleButton) findViewById(R.id.toggleButton);
        g.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if (isChecked) {
                    RelativeLayout currentLayout = (RelativeLayout) findViewById(R.id.main_layout);
                    currentLayout.setBackgroundColor(Color.RED);
                } else {
                    RelativeLayout currentLayout = (RelativeLayout) findViewById(R.id.main_layout);
                    currentLayout.setBackgroundColor(Color.BLACK);
                }
            }
        });
    }

the expected result is the background change however this is not happening and the app crashes after this

Upvotes: 0

Views: 491

Answers (3)

Bijin Abraham
Bijin Abraham

Reputation: 2187

Once i changed to layout to Constraint it worked fine.

if (isChecked) {
                ConstraintLayout currentLayout = (ConstraintLayout) findViewById(R.id.main_layout);
                currentLayout.setBackgroundColor(Color.RED);
            } else {
                ConstraintLayout currentLayout = (ConstraintLayout) findViewById(R.id.main_layout);
                currentLayout.setBackgroundColor(Color.BLACK);

Upvotes: 0

Shahadat Hossain
Shahadat Hossain

Reputation: 543

According to your crush report: You are using ConstraintLayout in the XML file. On the other hand, you are initializing RelativeLayout in the Java file.

You have to use the same layout at the same time in both files. So change your XML file layout into RelativeLayout Instead of ConstraintLayout or change ConstraintLayout in the Java file ConstraintLayout of RelativeLayout.

Just keep in your mind Both Layouts should be the same.

Hope it will help you.

Thank you

Upvotes: 0

niceumang
niceumang

Reputation: 1432

please use Constraint layout here RelativeLayout currentLayout = (RelativeLayout) findViewById(R.id.main_layout); instead of RelativeLayout because you use constraint layout in your XML file ;)

Upvotes: 1

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