Question

Is it possible to create and delete buttons upon toggling an onClickListener?

Currently my code looks like this:

    Button minuskegle, minuskugle, pluskugle, pluskegle, plusmidkegle, minusmidkegle;
ToggleButton toggle;


@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    toggle = (ToggleButton) findViewById(R.id.bRedGreen);
    toggle.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            pluskugle = (Button) findViewById(R.id.bBallhole);
            minuskugle = (Button) findViewById(R.id.bBallhole);

            pluskegle = (Button) findViewById(R.id.bKegle);
            minuskegle = (Button) findViewById(R.id.bKegle);

            plusmidkegle = (Button) findViewById(R.id.bKeglemid);
            minusmidkegle = (Button) findViewById(R.id.bKeglemid);

        if(toggle.isChecked())
        {
            minuskugle.setBackgroundResource(R.drawable.redballinhole);
            minuskegle.setBackgroundResource(R.drawable.redkegle);
            minusmidkegle.setBackgroundResource(R.drawable.midkegleminus);
        }

        else 
        {
            pluskugle.setBackgroundResource(R.drawable.whiteballinhole);
            pluskegle.setBackgroundResource(R.drawable.kegleb);
            plusmidkegle.setBackgroundResource(R.drawable.midkegleplus);
        }

        }

    });
}

I need it to create buttons upon if(toggle.isChecked())

else

delete them

Answer 1

Easy enough 🙂

Find the parent view in which you want to insert your new button, create a button, insert button into view :

RelativeLayout parentView = (RelativeLayout) findViewById(R.id.parentView);
Button buttonTest = new Button(MyActivity.this);
parentView.addView(buttonTest);

MyActivity.this is necessary because you are inside the click function and this does not refer to the activity.