Question

I’ve been looking for over a month and I cannot get this resolved anywhere. Whenever I hit the back button my app closes. I’ve searched for finish() I’ve overridden the onBackPressed(), I just cannot seem to solve this issue.

public class Toasty extends Activity {

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

    Button button = (Button) findViewById(R.id.button1);

    button.setOnClickListener(new OnClickListener() {

          public void onClick(View arg0) {
             Toast.makeText(getApplicationContext(),
                     "Here's your toast!", Toast.LENGTH_LONG).show();
             setContentView(R.layout.activity_show_toast);
          }
    });
  }
}

This is pretty much all I do. It pops up on the next screen with a text view and a Toast pops up. Then I press that back button and the app exits when all I want to do is reset so that the button can be pressed again.

Answer 1

“Not returning to previous view”

This is because when you press the back button it doesn’t leave a view, it leaves an Activity.

Hence if you have one Activity it will exit the application, no matter how many times you change the view.

To change the behaviour either:

A. Create a new Activity with your second view and go to it via an Intent

  Intent i = new Intent(this, ActivityTwo.class);
  startActivity(intent); 

NOTE: ActivityTwo will be an activity containing R.layout.activity_toasty as its view

B. Override the back button as below

@Override
public void onBackPressed(){
     if(currentViewIsShowToast){
         setContentView(R.layout.activity_toasty);
         //Change activity to previous view
     }
     else 
         super.onBackPressed();
}