Convert to numbers in Android app [closed]

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I am trying to create an Android app and I have gotten stuck. I am getting input text with EditText and I need to convert it to a number (as I need to do some mathematical functions). My problem is that none of the integer.something fun开发者_StackOverflowctions works with EditText. Could you suggest something?

Cheers!

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Parsing numbers is pretty easy in Java:

TextView numberView = (TextView)findViewById( ... );
double doubleNumber = Double.parseDouble( numberView.getText().toString() );
float floatNumber = Float.parseFloat( numberView.getText().toString() );
int intNumber = Integer.parseInt( numberView.getText().toString() );

You get the idea. If you want floating point numbers (decimals) then double or float depending on the precision you need. For integer numbers int works.

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You first need to get the String value from the EditText:

String stringValue = EditText.getText().toString();

and then you can convert it into an int:

int value = Integer.parseInt(stringValue);

and now value will hold the int value of the text in the EditText.

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You need to get the text from the EditText as a string first:

double d = Double.valueOf(myEditText.getText().toString());

Or

int i = Integer.valueOf(myEditText.getText().toString());