Question

I have created TWO screens which i will paste the code below.

`FirstScreen:` i have a button and when tap/click it will go to `SecondScreen`
`SecondScreen:` i have a button and when tap/click it will go to `FirstScreen`

//code://

public class FirstScreen extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        Button btn = (Button)findViewById(R.id.btnPressMe);

        btn.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {
                // TODO Auto-generated method stub
                startActivity(new Intent(Main.this, SecondScreen.class));
            }
        }); 
    } 
}


public class SecondScreen extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.secondscreen);

        Button btn = (Button)findViewById(R.id.btnGoToThirdScreen);

        btn.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {
                // TODO Auto-generated method stub
                //startActivity(new Intent(Main.this, SecondScreen.class));
                //HOW DO I GOT TO FIRST SCREEN????
            }
        }); 
    } 
}

if there is a better of way of doing please let me know. – Thanks.

Answer 1

If you want to go back to the first activity, you just need to finish the second one, not create new instance of the first activity, this is done like that:

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

To start the second activity from the first one, you should do:

startActivity(new Intent(FirstScreen.this, SecondScreen.class));