Error setting text on TextView in Android

Question

I keep getting a null pointer error, but I can't figure out why. Is there something very obvious I'm missing?

final Dialog d = new Dialog(Start.this);
        // dialog.requestWindowFeature((int) Window.FEATURE_NO_TITLE);
        d.requestWindowFeature((int) android.view.Window.FEATURE_NO_TITLE);

        d.setContentView(R.layout.popuptwo);
        WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
        lp.copyFrom(d.getWindow().getAttributes());
        lp.width = WindowManager.LayoutParams.MATCH_PARENT;
        lp.height = WindowManager.LayoutParams.MATCH_PARENT;
        d.show();

        d.getWindow().setAttributes(lp);
        TextView totaltxt = (TextView) findViewById(R.id.totaltxt);
            totaltxt.setText("Test text");

If I remove totaltxt.setText("Test text"); then the program doesn't crash. Ideas?

TextView totaltxt = (TextView) d.findViewById(R.id.totaltxt); — Nirav Ranpara
– Nirav Ranpara, Commented Nov 27, 2012 at 10:33

Carnal · Accepted Answer · 2012-11-27 10:32:52Z

3

The text view belongs to the dialog..so you should use the dialog's view..

TextView totaltxt = (TextView) d.findViewById(R.id.totaltxt);

edited Nov 27, 2012 at 10:32

Carnal

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answered Nov 27, 2012 at 10:32

Nermeen

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1 Comment

EGHDK Over a year ago

Thank you guys so much. That does make sense now. I appreciate the help.

Uttam · Accepted Answer · 2012-11-27 10:34:00Z

0

Just do..TextView totaltxt = (TextView) d.findViewById(R.id.totaltxt); totaltxt.setText("Test text");

answered Nov 27, 2012 at 10:34

Uttam

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Comments

Hulk · Accepted Answer · 2012-11-27 10:34:18Z

0

Because it unable to get the view for dialog so,

Replace this line--

  TextView totaltxt = (TextView) findViewById(R.id.totaltxt);

by this--

  TextView totaltxt = (TextView) d.findViewById(R.id.totaltxt);

here d is your dialog object.

answered Nov 27, 2012 at 10:34

Hulk

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