Incredibly simple android java question

How can I convert the below int to display the result of the sum as text in a textview?

Am getting 'cannot invoke toString() on primitive type int' - thought that was the point of toString!?!

public void onClick(View v) {
    // TODO Auto-generated method stub
    txtAnswer = (TextView)findViewById(R.id.txtAnswer);
    editStones 开发者_如何学运维= (EditText)findViewById(R.id.editStones);

    int result = 10 + 10;
    txtAnswer.setText(result.toString());
}

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txtAnswer.setText(String.valueOf(result));

or this works also:

txtAnswer.setText("result is : "+result);

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Use String.valueOf(result)

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int is a primitive type in Java, meaning it is not a class, and therefore has no toString() method. You can use the Integer class or just use String.valueOf(result).

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One of the more annoying things about java is that they still have primitives. So you have to use a Static Method of another class, either String.valueOf() or Integer.toString().

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You can convert it using many formats as follows-

1. Convert using Integer.toString(int)

   int number = -782;
   String numberAsString = Integer.toString(number);
   

2. Convert using String.valueof(int)

   String.valueOf(number);
   

3. Convert using Integer(int).toString()

   String numberAsString = new Integer(number).toString();
   

4. Convert using String.format()

   String numberAsString = String.format ("%d", number);