Atm android app

I am developing an ATM android app and whenever the app opens it crashes. Here is my code:

public class MainActivity extends AppCompatActivity {
TextView balanceText;
EditText input;
Button withdrawButton;
int balance = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    //Create the random number
    Random number = new Random();
    int balance = number.nextInt(10000);
    //Initialize the variables
    balanceText = (TextView)findViewById(R.id.balanceText);
    input = (EditText) findViewById(R.id.input);
    withdrawButton = (Button) findViewById(R.id.withdrawButton);
    do{
        balanceText.setText(balance);
    }while(balance > 0);
}
public void withdraw(View view){
    try{
        String text = input.getText().toString();
        int withdrawal = Integer.parseInt(text);
        balance = balance - withdrawal;
        if(withdrawal > balance){
         balanceText.setText("Insufficient funds");
        }
    }catch(Exception e){
        balanceText.setText("Something went wrong");
    }
}

}

Note: I dont rum on an emulator so I dont know what exception or error I am getting.