android-fragmentactivity

Hide/Show Action Bar Option Menu Item for different fragments

Try this… You don’t need to override onCreateOptionsMenu() in your Fragment class again. Menu items visibility can be changed by overriding onPrepareOptionsMenu() method available in Fragment class. @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setHasOptionsMenu(true); } @Override public void onPrepareOptionsMenu(Menu menu) { menu.findItem(R.id.action_search).setVisible(false); super.onPrepareOptionsMenu(menu); }

commitAllowingStateLoss() in fragment activities

If I understand correctly you mean : Is there any reason NOT to indiscriminately do this without re-evaluating each individual case where I use a fragment? The answer is Yes – you should not do this without carefully re-evaluating each individual case where you use a fragment. Of course, by preventing restarts due to config … Read more

FragmentPagerAdapter getItem is not called

KISS Answer: Simple use FragmentStatePagerAdapter instead of FragmentPagerAdapter. I got the answer.. Firstly I thought to delete this question as I am doing a very silly mistake but this answer will help someone who is facing the same problem that Instead of FragmentPagerAdapter, use FragmentStatePagerAdapter. As @BlackHatSamurai mentioned in the comment: The reason this works … Read more

refresh fragment UI from fragmentActivity

So obviously adjust for your specific needs, but this is what I use for my Application. Fragment frag = getSupportFragmentManager().findFragmentByTag(“android:switcher:” + R.id.pager + “:” + mPager.getCurrentItem()); if(frag!=null&&mPager.getCurrentItem()==0) { ((Fragment1) frag).changeImageView(1); }

Default Activity not found in Android Studio

Have you added ACTION_MAIN intent filter to your main activity? If you don’t add this, then android won’t know which activity to launch as the main activity. ex: <intent-filter> <action android:name=”android.intent.action.MAIN”/> <action android:name=”com.package.name.MyActivity”/> <category android:name=”android.intent.category.LAUNCHER” /> </intent-filter>

What is the difference between Fragment and FragmentActivity?

A Fragment is a section of an Activity, which has: its own lifecycle receives its own input events can be added or removed while the Activity is running. A Fragment must always be embedded in an Activity. Fragments are not part of the API prior to HoneyComb (3.0). If you want to use Fragments in … Read more

Android – Activity vs FragmentActivity? [duplicate]

ianhanniballake is right. You can get all the functionality of Activity from FragmentActivity. In fact, FragmentActivity has more functionality. Using FragmentActivity you can easily build tab and swap format. For each tab you can use different Fragment (Fragments are reusable). So for any FragmentActivity you can reuse the same Fragment. Still you can use Activity … Read more

“Failure Delivering Result ” – onActivityForResult

First of all, you should read my blog post for more information (it talks about why this exception happens and what you can do to prevent it). Calling commitAllowingStateLoss() is more of a hack than a fix. State loss is bad and should be avoided at all costs. At the time that onActivityResult() is called, … Read more

TabHost with Fragments and FragmentActivity

I would suggest creating a separate fragment file for each tab. I recently did this as well, so I have outlined my code below: Layout Files activity_main.xml <android.support.v4.app.FragmentTabHost xmlns:android=”http://schemas.android.com/apk/res/android” android:id=”@android:id/tabhost” android:layout_width=”match_parent” android:layout_height=”match_parent”> <LinearLayout android:orientation=”vertical” android:layout_width=”match_parent” android:layout_height=”match_parent”> <TabWidget android:id=”@android:id/tabs” android:orientation=”horizontal” android:layout_width=”match_parent” android:layout_height=”wrap_content” android:layout_weight=”0″/> <FrameLayout android:id=”@android:id/tabcontent” android:layout_width=”0dp” android:layout_height=”0dp” android:layout_weight=”0″/> <FrameLayout android:id=”@+id/realtabcontent” android:layout_width=”match_parent” android:layout_height=”0dp” android:layout_weight=”1″/> </LinearLayout> </android.support.v4.app.FragmentTabHost> tab1_view.xml … Read more