Button click change textview

Question

I want to make a simple counter program where I have a Textview and two buttons, one with + another with - whichever I press I get 1 incremented or decremented.

My problem is that I want the Textview to update a variable and not text. (By that I mean I get the app to work with .setText("counter:"+ var_counter) but doesn't work with .setText(var_counter) .

var_counter is an int.

    final TextView tvContador = (TextView)findViewById(R.id.tvContador);
Button add = (Button)findViewById(R.id.bMais);
Button sub = (Button)findViewById(R.id.bMenos);
add.setOnClickListener(new View.OnClickListener() {
       @Override
       public void onClick(View v) {
           contador++;                                 
           tvContador.setText(getText(contador));
       }
});

ps: my string is a resource string.

Answer 1

Since var_counter is an int , setText(var_counter) tries to set the text of the widget to the string resource with such value as its id . What you want is:

setText(Integer.toString(var_counter));

Answer 2

采用

.setText(Integer.toString(var_counter));

Answer 3

只是：

.setText(""+var_counter);