Up button doesn't work correctly in android 4.0.4

Question

I have a main activity and a child activity. I am using up button in child activity to return to main activity. In my activity I have some animation that I don't want to start it again when I return to it form child activity. So here is home action in child activity:

@Override
    public boolean onOptionsItemSelected(MenuItem item) {

        switch (item.getItemId()) {
        case android.R.id.home:
            Intent intent = NavUtils.getParentActivityIntent(this);
            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            NavUtils.navigateUpTo(this, intent);
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

And here is manifest:

 <activity
      android:name=".ChildActivity"
      android:label="@string/app_name"
      android:parentActivityName=".MainActivity" >

      <!-- Parent activity meta-data to support 4.0 and lower -->
      <meta-data
          android:name="android.support.PARENT_ACTIVITY"
          android:value=".MainActivity" />
</activity>

When I run it on LG nexus 5 with android 4.4.4 it works fine but in Xperia arc with android 4.0.4 it starts the animation each time I return to main activity. What's the solution?

Update:

I can achieve what I want using one of these ways:

1- Just calling finish() when up is pressed.

2- Using Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP when adding flag to intent.

But I want to know what causes this difference in behavior in android 4.4.4 and 4.0.4.

Thanks in advance!

please add your comments to your question, this way when people read it can easily understand the situation:-) — mmlooloo, Oct 04 '14 at 10:09

score 0 · Answer 1 · answered Oct 04 '14 at 15:30

0

Per Providing Up Navigation, you can use NavUtils.navigateUpFromSameTask(this); rather than constructing an Intent yourself as this will handle the flags correctly to return to the parent activity.

answered Oct 04 '14 at 15:30

ianhanniballake

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It causes both devices to start animation when I return to main activity. – Misagh Emamverdi Oct 04 '14 at 17:37
1

Right, Up and Back (what is done by `finish()`) are different operations: back is simply closing the current screen and going to where the user came from while Up involves creating a semantic, consistent parent state. If you don't have `singleTop` on your parent activity's manifest entry, then you'll see it totally recreating the parent activity and the animation you see. – ianhanniballake Oct 04 '14 at 18:22

Up button doesn't work correctly in android 4.0.4

1 Answers1