How to switch between screens?

Question

I\'m new in the android develop world. I created simple application and created a simple GUI with one button. If the user presses this button, I want to change the screen

Answer 1

A better word than "Screen" is "Activity", You switch between Activities in android.

A very simple way is to create a button on one activity (Lets call this First Activity) and assign it a method like onClick = startSecondActivity in the .xml file.

Open FirstActivity.java, Add the method startSecondActivity inside the main method as shown below. This will work!

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // Set the content of the activity to use the activity_main.xml layout file
        setContentView(R.layout.activity_main);
    }

    public void startSecondActivity(View view){
        Intent i = new Intent(this, SecondActivity.class);
        startActivity(i);
    }
}