Making math operations in setText?

Question

Why I'm getting error on this line ?

textView1.setText((editText1.getText() + editText2.getText() + (editText3.getText)) / 3);

Can we do math operations in setText method ?

Answer 1

Try this :

float result = (Integer.parseInt(editText1.getText().toString()) +Integer.parseInt(editText2.getText().toString())+Integer.parseInt(editText3.getText().toString()))/ 3;
textView1.setText(""+result );

Answer 2

Replace

textView1.setText((editText1.getText() + editText2.getText() + editText3.getText) / 3);

with

textView1.setText(""+(Integer.parseInt(editText1.getText().toString()) + Integer.parseInt(editText2.getText().toString()) + Integer.parseInt(editText3.getText().toString())) / 3);

Answer 3

editText1.getText() is returning a string. Adding the other getText's is performing string concatenation.

You need to convert the values to integer (or float) and then divide:

textView1.setText(String.valueOf((Integer.valueOf(editText1.getText()) + Integer.valueOf(editText2.getText()) + Integer.valueOf(editText3.getText)) / 3));

Answer 4

editText1.getText() returns Editable which implements CharSequence. So you cannot directly perform arithmetic operations on such data types until you convert them into correct ones. For example: int, double...

Answer 5

These methods will return String

editText1.getText()
editText2.getText() 
editText3.getText() 

You need to cast to Integer or double.

eg Integer.pargeInt(editText1.getText())

for illustration try this one

String s="2";
System.out.println(s/3);