android textview return null error exception

Question

public class .. {

TextView txt;

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    txt = (TextView)findViewById(R.id.booom);
    doMethod();
}

ClassOne classOne = new ClassOne();
private void doMethod() {
    classOne.refire(this, classTwo);
}

public ClassTwo classTwo = new ClassTwo (){
    public void nomnom(Double ing){
        txt.setText(String.valueOf(ing); //null point error
    }
}

txt.setText(String.valueOf(ing); return null pointer error expection once the program is run, if i used toast in there without using txt.setText, its working fine.

What would be the problem?

Thanks

BTW, you didn't close the parentheses: txt.setText(String.valueOf(ing)); — MByD
– MByD, Commented Jul 4, 2011 at 6:15
I will be surprised if you can compile the code as your code contain error. You're missing the last enclosing bracket ')' at the line 'txt.setText(String.valueOf(ing);' — Kristiono Setyadi
– Kristiono Setyadi, Commented Jul 4, 2011 at 6:17

MByD · Accepted Answer · 2011-07-04 06:02:30Z

1

Probably (TextView)findViewById(R.id.booom); returned null. Make sure that booom is the id of the TextView.

answered Jul 4, 2011 at 6:02

MByD

138k30 gold badges269 silver badges278 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Gregory · Accepted Answer · 2011-07-04 06:13:09Z

0

My guess is that ing is null. String.valueOf throws a NullPointerException is you pass it null.

answered Jul 4, 2011 at 6:13

Gregory

4,4341 gold badge28 silver badges21 bronze badges

Collectives™ on Stack Overflow

android textview return null error exception

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related