Complete newbie question, textview handle not recognizing

My previous coding experience has been with python, and only scripts related to data stream processing.

I'm getting a compile error when referencing a textview handle

To boil some code down: during onCreate(), calls a function setupHandles()

public void setupHandles(){
    //initialize internal controls to text labels
     TextView tvmoney = (TextView) findViewById(R.id.moneyText);
     TextView tvsave = (TextView) findViewById(R.id.savingsText);
     ..... etc etc many more handles

now in a part of code from onResume(), I try to do, for example:

tvmoney.setText(("Money: $" + "foo" + "bar"));

Its saying that the tvm开发者_如何学Pythononey can't be resolved. Why is this? The setupHandles has to have run, onCreate, and it is public... But if I put the line 3 in onResume, the handle works. How can I get it to either pass the handles along, or make it truly public?

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The reference named tvmoney is obtained and only available in method setupHandles(). Once the execution of setupHandles() finishes, tvmoney is gone.

To solve this, just set tvmoney as a global variable (outside of any method)