Mateusz Cieplak Mateusz Cieplak - 1 month ago 18
Android Question

TabLayout removes all tabs when PagerAdapter invoke notifyDataSetChanged() override TabLayout class and Exception

I used to use text as title in TabLayout, but I decide to change to icon, at

onCreateView
use
tabLayout.getTabAt(0).setIcon(R.drawable.ic)
. But When I update my data set in PagerArray by notifyDataSetChanged() all tabs become empty. I found: Issue 202402

They writing the solution is create new Class extends TabLayout. So I did it:

public class SuperTabLayout extends TabLayout {
public SuperTabLayout(Context context) {
super(context);
}

@Override
public void addTab(Tab tab, boolean setSelected) {
tab.setIcon(R.drawable.ic_assessment_24dp);
super.addTab(tab, setSelected);
}


}

And they writing so that don't forget about layout

<com.paragraf.workhours.SuperTabLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/tablay1"
android:layout_below="@+id/ivPersonAvatar"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
class="com.paragraf.workhours.SuperTabLayout"
/>


But I got something like this:

10-17 21:07:18.600 28964-28964/com.paragrafxv.workhours E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.paragrafxv.workhours, PID: 28964
android.view.InflateException: Binary XML file line #23: Binary XML file line #23: Error inflating class com.paragrafxv.workhours.SuperTabLayout
at android.view.LayoutInflater.inflate(LayoutInflater.java:539)
at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
at com.paragrafxv.workhours.SitePersonFragment.onCreateView(SitePersonFragment.java:86)
at android.app.Fragment.performCreateView(Fragment.java:2220)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:973)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1148)
at android.app.BackStackRecord.run(BackStackRecord.java:793)
at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1535)
at android.app.FragmentManagerImpl$1.run(FragmentManager.java:482)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5539)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: android.view.InflateException: Binary XML file line #23: Error inflating class com.paragrafxv.workhours.SuperTabLayout
at android.view.LayoutInflater.createView(LayoutInflater.java:628)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:764)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:835)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798)
at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
at android.view.LayoutInflater.inflate(LayoutInflater.java:423) 
at com.paragrafxv.workhours.SitePersonFragment.onCreateView(SitePersonFragment.java:86) 
at android.app.Fragment.performCreateView(Fragment.java:2220) 
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:973) 
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1148) 
at android.app.BackStackRecord.run(BackStackRecord.java:793) 
at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1535) 
at android.app.FragmentManagerImpl$1.run(FragmentManager.java:482) 
at android.os.Handler.handleCallback(Handler.java:739) 
at android.os.Handler.dispatchMessage(Handler.java:95) 
at android.os.Looper.loop(Looper.java:148) 
at android.app.ActivityThread.main(ActivityThread.java:5539) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
Caused by: java.lang.NoSuchMethodException: <init> [class android.content.Context, interface android.util.AttributeSet]
at java.lang.Class.getConstructor(Class.java:528)
at java.lang.Class.getConstructor(Class.java:492)
at android.view.LayoutInflater.createView(LayoutInflater.java:592)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:764) 
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704) 
at android.view.LayoutInflater.rInflate(LayoutInflater.java:835) 
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:515) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:423) 
at com.paragrafxv.workhours.SitePersonFragment.onCreateView(SitePersonFragment.java:86) 
at android.app.Fragment.performCreateView(Fragment.java:2220) 
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:973) 
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1148) 
at android.app.BackStackRecord.run(BackStackRecord.java:793) 
at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1535) 
at android.app.FragmentManagerImpl$1.run(FragmentManager.java:482) 
at android.os.Handler.handleCallback(Handler.java:739) 
at android.os.Handler.dispatchMessage(Handler.java:95) 
at android.os.Looper.loop(Looper.java:148) 
at android.app.ActivityThread.main(ActivityThread.java:5539) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 


Somebody?

Answer

You need to implement all of the parent class' constructors. Specifically:

As you don't declare the second one, your SuperTabLayout cannot be used from XML.