How to go back from 3rd activity to second activity by back button?

Question

I just started android programming and I created 3 activities.A button in each activity will open another.I can navigate from my 2nd activity back to my first but I can't navigate from my third activity back to my second.Here's what I tried but the app crashes when I click on the back button. I guess it's trying to jump from the third activity to the second. If it helps my second activity's java file is called CountryDetails.java

 public class WikiPage extends AppCompatActivity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_web);

        getSupportActionBar().setTitle(R.string.title_activity_wikipedia_details);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        super.onCreateOptionsMenu(menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            // Respond to the action bar's Up/Home button
            case android.R.id.home:
                NavUtils.navigateUpFromSameTask(this);
                return true;
        }
        return super.onOptionsItemSelected(item);
    }
}

can you post your manifest? – Rajasekaran M May 03 '18 at 09:23 — Rajasekaran M, May 03 '18 at 09:23

score 4 · Answer 1 · answered May 03 '18 at 09:20

4

Simply call onBackPressed() instead of NavUtils.navigateUpFromSameTask(this)

answered May 03 '18 at 09:20

Kruti Parekh

1,271
9
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IntelliJ Amiya · Accepted Answer · 2018-05-03T09:37:06.477

3

Remove NavUtils.navigateUpFromSameTask(this);

You should use onBackPressed() only.

Called when the activity has detected the user's press of the back key. The default implementation simply finishes the current activity, but you can override this to do whatever you want.

case android.R.id.home:
    onBackPressed();
    return true;

edited May 03 '18 at 09:37

answered May 03 '18 at 09:20

IntelliJ Amiya

74,896
15
165
198

1

Thanks for the help but I was wondering what's the difference between navigateUpFromSameTask and onBackPressed – Sook Lim May 03 '18 at 09:30
@SookLim Read https://developer.android.com/reference/android/support/v4/app/NavUtils#navigateupfromsametask – IntelliJ Amiya May 03 '18 at 09:31
1

@SookLim, https://stackoverflow.com/questions/18906116/which-one-to-use-navutils-navigateupfromsametask-vs-onbackpressed answer in this link will help you understand the difference between the two. – Kruti Parekh May 03 '18 at 09:37
1

@parekhkruti26 indeed. Thanks for info. – IntelliJ Amiya May 03 '18 at 09:39

user7176550 · Answer 3 · 2018-05-03T09:52:44.077

0

Use onBackPressed() instead of NavUtils.navigateUpFromSameTask(this) for activity backstake manage

edited May 03 '18 at 09:52

answered May 03 '18 at 09:40

user7176550

1,501
14
19

How to go back from 3rd activity to second activity by back button?

3 Answers3