android.support.v4.app.getFragmentManager() returns null? -



android.support.v4.app.getFragmentManager() returns null? -

this stacktrace:

fatal exception: main java.lang.nullpointerexception @ com.example.test.fragments.loadingfragment$1.run(loadingfragment.java:66) @ android.os.handler.handlecallback(handler.java:725) @ android.os.handler.dispatchmessage(handler.java:92) @ android.os.looper.loop(looper.java:137) @ android.app.activitythread.main(activitythread.java:5041) @ java.lang.reflect.method.invokenative(native method) @ java.lang.reflect.method.invoke(method.java:511) @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:793) @ com.android.internal.os.zygoteinit.main(zygoteinit.java:560) @ dalvik.system.nativestart.main(native method)

line 66 of fragment:

fragmenttransaction ft = fm.begintransaction();

fm gotten this:

android.support.v4.app.fragmentmanager fm = getfragmentmanager();

my fragment extends android.support.v4.app.fragment, these imports:

import android.os.bundle; import android.support.v4.app.fragment; import android.support.v4.app.fragmenttransaction; import android.view.layoutinflater; import android.view.view; import android.view.viewgroup; import android.widget.textview;

i never had seen got null fragmentmanager got idea?

replace getfragmentmanager() getsupportfragmentmanager() , create sure activity extends fragmentactivity

android android-fragments android-support-library

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