Question

Some of my coding is as follows. The first button (button2) is for exit which is working fine on my emulator and phone but the (button 1) which is supposed to take input from a TextView and add 777 and then display as a toast message is not working in either of them.

public class TimerCodeActivity extends Activity {

protected TextView timebox;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.timerlayout);

    timebox = (TextView) findViewById(R.id.timebox);

    Button button2 = (Button) findViewById(R.id.button2);
    button2.setOnClickListener(new OnClickListener(){

        @Override    
        public void onClick(View v) {
            finish();
            System.exit(0);}
    });    

    Button button1 = (Button) findViewById(R.id.button1);
    button1.setOnClickListener(new OnClickListener(){    

        @Override
        public void onClick(View v) {  
            String timeboxRepresentation = (String) timebox.getText();

             int Digit = Integer.parseInt(timeboxRepresentation.substring(0,2));
             int total = Digit + 777;

             Toast.makeText(TimerCodeActivity.this, String.valueOf(total), Toast.LENGTH_LONG).show();
        }
    });
}}

Thank you in advance for any assistance.

Answer 1

try this:

public class TimerCodeActivity extends Activity {

protected TextView timebox;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.timerlayout);

    timebox = (TextView) findViewById(R.id.timebox);

    Button button2 = (Button) findViewById(R.id.button2);
    button2.setOnClickListener(new OnClickListener(){

        @Override    
        public void onClick(View v) {
            finish();
        }
    });    

    Button button1 = (Button) findViewById(R.id.button1);
    button1.setOnClickListener(new OnClickListener(){    

        @Override
        public void onClick(View v) {
            // Use toString to get the TextView content  
            String timeboxRepresentation = timebox.getText().toString();

             int Digit = Integer.parseInt(timeboxRepresentation.substring(0,2));
             int total = Digit + 777;

             Toast.makeText(TimerCodeActivity.this, String.valueOf(total), Toast.LENGTH_LONG).show();
        }
    });
}}

and just remove

System.exit(0);

it’s useless.