getParent() is null in onResume inside TabHost child activity

Question

I have a tabhost widget which starts different activies by using Intents.

TabSpec tab = mTabHost.newTabSpec("profile");
tab.setIndicator("profile");
Intent i3 = new Intent(ctx, ProfileActivity.class);
tab.setContent(i3);
mTabHost.addTab(tab);

All childs are defined as embeded:

    <activity android:exported="false" android:name="com.example.app.ProfileActivity" android:label="ProfileActivity view">
       <intent-filter>
          <category android:name="android.intent.category.EMBED"></category>
          <action android:name="android.intent.action.MAIN"></action>
       </intent-filter>
    </activity>

Unfortunately I can see an occasional crash inside my ProfileActivity onResume function.

It crashes on this line, because getParent() returns null.

((MainActivity) getParent()).goToTab("splash")

It's not happening all the time - it's very occasional.

Anyone had this problem?

The documentation states - `Return the parent activity if this view is an embedded child.` - is this the case? — g00dy, Sep 02 '13 at 09:15
@g00dy I think it's an embedded child since it's started inside apphost. — Arkadiusz 'flies' Rzadkowolski, Sep 02 '13 at 09:17
I think it becomes embedded when you `addView` or `addTab`. In the `onResume` I suppose you don't have it, please check if so. — g00dy, Sep 02 '13 at 09:18
You mean onResume of MainActivity right? I have addTab inside onCreate method in MainActivity - could this lead to a problem? — Arkadiusz 'flies' Rzadkowolski, Sep 02 '13 at 09:20

score 0 · Answer 1 · answered Sep 02 '13 at 09:17

0

As Documentation says: public final Activity getParent () Since: API Level 1

Returns the parent activity if this view is an embedded child.

Is your Activity an embedded child? If yes then it will return parent activity context otherwise null

answered Sep 02 '13 at 09:17

Harish Godara

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If you read closer description to my question you will see that this null is occassional and not permanent. I get parent context 99% of the time. – Arkadiusz 'flies' Rzadkowolski Sep 02 '13 at 09:18

getParent() is null in onResume inside TabHost child activity

1 Answers1