android-tablayout

I have one Activity and two Fragments for a tablayout containing a viewpager . Now I can communicate from the fragment to the Activity by implementing the google's guide callback interface. But how can I communicate the other way from activity to fragment ? If something happens in the Activity (external events) I want to update the Fragment. I managed to get the Frag1 fragment with MyFragmentPagerAdapter a = (MyFragmentPagerAdapter) viewPager.getAdapter(); Frag1 frag = (Frag1) a.getItem(0); but when I call public methods on frag I get a IllegalStateException: Fragment not attached to Activity

I am following the tutorial of https://androidbelieve.com/navigation-drawer-with-swipe-tabs-using-design-support-library/ to implement sliding tablayout. It works perfect for empty fragments, However, I have 3 fragments with LoaderManagers and recyclerViews, each one loads different data. When the app loaded at the first time, if I click from the first fragment to the third fragment on the tabLayout without sliding or clicking to second one, it crashes. The data was not loading, as it implements LoaderManager, it started implementing from OnLoadFinished() method. I couldn't see onCreate().. or

Is it possible to create a swiped TabLayout in an app using multiple activities instead of fragments? I have two activities using which I am trying to create an app that uses a swipable TabLayout. I am searching the net over this but could not find one yet. If that is possible to build, can anyone please provide some links or tutorials over this? yennsarah From GestureDetector and OnSwipeTouchListener : public class MainActivity extends Activity { private GestureDetectorCompat mDetector; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);

i have been searching how to change the indicator in Tablayout to be circular, like this but i don't know how to do so, any help! From the source code , the tab indicator is defined as: <style name="Base.Widget.Design.TabLayout" parent="android:Widget"> <item name="tabMaxWidth">@dimen/design_tab_max_width</item> <item name="tabIndicatorColor">?attr/colorAccent</item> <item name="tabIndicatorHeight">2dp</item> <item name="tabPaddingStart">12dp</item> <item name="tabPaddingEnd">12dp</item> <item name="tabBackground">?attr/selectableItemBackground</item> <item name="tabTextAppearance">@style

I want to use TabLayout with TabItem with following code: <android.support.design.widget.TabLayout android:id="@+id/tabs" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@color/color_primary" app:tabGravity="fill" app:tabIndicatorColor="@color/white" app:tabMode="fixed" app:tabSelectedTextColor="@color/white" app:tabTextColor="@color/gray_light"> <android.support.design.widget.TabItem android:layout_width="wrap_content" android:layout_height="match_parent" android:icon="@drawable/ic_language" /> <!-- other tabs ... --> </android.support.design

I need to hide first tab. First page should work but when user select it, it should be seems like on tabs is selected. How I can do this? I found some solutions with TabHost and it useless to me. public class TabFragmentClients extends Fragment { public static TabLayout tabLayout; public static ViewPager viewPager; public static int int_items = 5 ; FinanceClients FinanceClients; public ClientsFragment clientsFragment; public FinanceFragment financeFragment; @Nullable @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { /** *Inflate tab

I`m using ViewPager and TabLayout. If tabs can be placed on the display tabMode they must be: app:tabMode="fixed" else app:tabMode="scrollable" How can I do this? Ram Prakash Bhat I din't get your question but i may help you, if tabs count is static or fixed(you know number of tabs) then app:tabMode="fixed" if tabs count is dynamic(data coming from feed) then app:tabMode="scrollable" If the problem is that for certain screen configurations (e.g. small screens, portrait config, etc.) the tabs need to be scrollable because they don't fit the screen and, for other screen config/sizes the number