Ich verwende Fragment, um meinen Inhalt in TabLayout zu halten. Im Inneren habe ich Button. Wenn ich versuche, in Fragment Klasse zu instanziiert bekomme ich diese folgende Fehlermeldung:NullPointerException Initialize View in Fragment
com.example.fanjavaid.tablayout E/AndroidRuntime: FATAL EXCEPTION: main
java.lang.NullPointerException
at com.example.fanjavaid.tablayout.fragment.AccountFragment.onCreateView(AccountFragment.java:27)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:2080)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1108)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1290)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:801)
at android.support.v4.app.FragmentManagerImpl.execSingleAction(FragmentManager.java:1638)
at android.support.v4.app.BackStackRecord.commitNowAllowingStateLoss(BackStackRecord.java:679)
at android.support.v4.app.FragmentStatePagerAdapter.finishUpdate(FragmentStatePagerAdapter.java:166)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1240)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1088)
at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1614)
Hier ist mein Code in onCreateView (...)
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
RelativeLayout mFragmentAccount = (RelativeLayout) getActivity().findViewById(R.id.fragment_account);
mBtnAddPerson = (Button) mFragmentAccount.findViewById(R.id.add_person);
Typeface font = Typeface.createFromAsset(mFragmentAccount.getContext().getAssets(), "/fonts/Rubik-Regular.ttf");
mBtnAddPerson.setTypeface(font);
return inflater.inflate(R.layout.fragment_account, mFragmentAccount,true);
}
Und hier ist mein Fragment XML-Layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/fragment_account"
android:padding="@dimen/activity_horizontal_margin"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
android:text="Hello Android!"/>
<Button
android:id="@+id/add_person"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:gravity="center"
android:text="Add People"/>
</RelativeLayout>
Was habe ich vermisst?
Danke
Sie haben vergessen, den Stacktrace hinzuzufügen. Bitte fügen Sie es zu Ihrer Frage hinzu. – Endzeit
Ja, bitte fügen Sie das Protokoll hinzu. – tpk
Frage aktualisiert, danke – fanjavaid