NullPointerException dans oncreateView() de Fragment

Ce code ci-dessous montre une partie de l'activité où le fragment est ajouté.


    FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
    ft.replace(R.id.fragment_container, srkt_frag);
    ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
    ft.commit();

    TabSpec specs1=mTab.newTabSpec("tag1");
    specs1.setContent(R.id.fragment_container);
    specs1.setIndicator("SRK/T");
    mTab.addTab(specs1);

mTab est TabHost où la srkt_frag est affiché comme du contenu.
le fragment de classe est indiqué ci-dessous


public class Srkt_x extends Fragment 
{
    @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {
            //TODO Auto-generated method stub
            View view=inflater.inflate(R.layout.activity_srkt_x,container,false);
            TextView text = (TextView) getView().findViewById(R.id.srkt_power);
            Float result=getArguments().getFloat("RESULT");
            text.setText(String.valueOf(result));
            return view;

        }

}

après l'exécution du projet-je obtenir nullpointerexception à la ligne 21 je.e à

TextView text = (TextView) getView().findViewById(R.id.srkt_power);

mon fichier xml est indiqué ci-dessous


<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Srkt_x" >
<ScrollView
android:id="@+id/srkt_scrollView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:background="@color/Black" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="433dp" >
<TextView
android:id="@+id/srkt_power"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/iolpower"
android:layout_toRightOf="@+id/iolpower"
android:clickable="false"
android:ems="10"
android:enabled="false"
android:fadingEdge="horizontal"
android:focusable="false"
android:focusableInTouchMode="false"
android:gravity="center|left"
android:longClickable="false"
android:paddingTop="10dp"
android:textColor="@color/DeepSkyBlue"
android:textSize="15sp" />
<TextView
android:id="@+id/iolpower"
android:layout_width="100dp"
android:layout_height="30dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="16dp"
android:layout_marginTop="20dp"
android:gravity="bottom|center"
android:textColor="@color/White"
android:inputType="text"
android:text="@string/power"
android:textSize="20sp"
android:visibility="visible" />
<TableLayout
android:layout_width="228dp"
android:layout_height="match_parent"
android:layout_below="@+id/srkt_power"
android:layout_centerHorizontal="true"
android:layout_marginTop="33dp"
android:paddingTop="10dp" >
<TableRow
android:id="@+id/srkttableRow1"
android:layout_height="wrap_content"
android:background="@color/SkyBlue"
android:orientation="vertical"
android:showDividers="middle" >
<TextView
android:id="@+id/iolCol"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:layout_weight="1"
android:background="@color/SkyBlue"
android:gravity="center"
android:text="@string/iol"
android:textColor="@color/White"
android:textSize="20sp" />
<TextView
android:id="@+id/refCol"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:layout_weight="1"
android:background="@color/SkyBlue"
android:gravity="center"
android:text="@string/refr"
android:textColor="@color/White"
android:textSize="20sp" />
</TableRow>
<TableRow
android:id="@+id/srkttableRow2"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="@color/Black" >
<TextView
android:id="@+id/srktrnd2"
android:layout_gravity="left|center"
android:layout_weight="1"
android:gravity="center"
android:textColor="@color/White"
android:textSize="15sp" />
<TextView
android:id="@+id/srktref2"
android:layout_gravity="right|center"
android:layout_weight="1"
android:gravity="center"
android:textColor="@color/White"
android:textSize="15sp" />
</TableRow>
<TableRow
android:id="@+id/srkttableRow3"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="@color/Black" >
<TextView
android:id="@+id/srktrnd3"
android:layout_gravity="left|center"
android:layout_weight="1"
android:gravity="center"
android:textColor="@color/White"
android:textSize="15sp" />
<TextView
android:id="@+id/srktref3"
android:layout_gravity="right|center"
android:layout_weight="1"
android:gravity="center"
android:textColor="@color/White"
android:textSize="15sp" />
</TableRow>
<TableRow
android:id="@+id/srkttableRow4"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="@color/Black" >
<TextView
android:id="@+id/srktrnd4"
android:layout_gravity="left|center"
android:layout_weight="1"
android:gravity="center"
android:textColor="@color/White"
android:textSize="15sp" />
<TextView
android:id="@+id/srktref4"
android:layout_gravity="right|center"
android:layout_weight="1"
android:gravity="center"
android:textColor="@color/White"
android:textSize="15sp" />
</TableRow>
<TableRow
android:id="@+id/srkttableRow5"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="@color/Black" >
<TextView
android:id="@+id/srktrnd5"
android:layout_gravity="left|center"
android:layout_weight="1"
android:gravity="center"
android:textColor="@color/White"
android:textSize="15sp" />
<TextView
android:id="@+id/srktref5"
android:layout_gravity="right|center"
android:layout_weight="1"
android:gravity="center"
android:textColor="@color/White"
android:textSize="15sp" />
</TableRow>
<TableRow
android:id="@+id/srkttableRow6"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="@color/Black" >
<TextView
android:id="@+id/srktrnd6"
android:layout_gravity="left|center"
android:layout_weight="1"
android:gravity="center"
android:textColor="@color/White"
android:textSize="15sp" />
<TextView
android:id="@+id/srktref6"
android:layout_gravity="right|center"
android:layout_weight="1"
android:gravity="center"
android:textColor="@color/White"
android:textSize="15sp" />
</TableRow>
<TableRow
android:id="@+id/srkttableRow7"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="@color/Black" >
<TextView
android:id="@+id/srktrnd7"
android:layout_gravity="left|center"
android:layout_weight="1"
android:background="@color/DeepSkyBlue"
android:gravity="center"
android:textColor="@color/White"
android:textSize="15sp" />
<TextView
android:id="@+id/srktref7"
android:layout_gravity="right|center"
android:layout_weight="1"
android:background="@color/DeepSkyBlue"
android:gravity="center"
android:textColor="@color/White"
android:textSize="15sp" />
</TableRow>
<TableRow
android:id="@+id/srkttableRow8"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="@color/Black" >
<TextView
android:id="@+id/srktrnd8"
android:layout_gravity="left|center"
android:layout_weight="1"
android:gravity="center"
android:textColor="@color/White"
android:textSize="15sp" />
<TextView
android:id="@+id/srktref8"
android:layout_gravity="right|center"
android:layout_weight="1"
android:gravity="center"
android:textColor="@color/White"
android:textSize="15sp" />
</TableRow>
<TableRow
android:id="@+id/srkttableRow9"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="@color/Black" >
<TextView
android:id="@+id/srktrnd9"
android:layout_gravity="left|center"
android:layout_weight="1"
android:gravity="center"
android:textColor="@color/White"
android:textSize="15sp" />
<TextView
android:id="@+id/srktref9"
android:layout_gravity="right|center"
android:layout_weight="1"
android:gravity="center"
android:textColor="@color/White"
android:textSize="15sp" />
</TableRow>
<TableRow
android:id="@+id/srkttableRow10"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="@color/Black" >
<TextView
android:id="@+id/srktrnd10"
android:layout_gravity="left|center"
android:layout_weight="1"
android:gravity="center"
android:textColor="@color/White"
android:textSize="15sp" />
<TextView
android:id="@+id/srktref10"
android:layout_gravity="right|center"
android:layout_weight="1"
android:gravity="center"
android:textColor="@color/White"
android:textSize="15sp" />
</TableRow>
<TableRow
android:id="@+id/srkttableRow11"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="@color/Black" >
<TextView
android:id="@+id/srktrnd11"
android:layout_gravity="left|center"
android:layout_weight="1"
android:gravity="center"
android:textColor="@color/White"
android:textSize="15sp" />
<TextView
android:id="@+id/srktref11"
android:layout_gravity="right|center"
android:layout_weight="1"
android:gravity="center"
android:textColor="@color/White"
android:textSize="15sp" />
</TableRow>
<TableRow
android:id="@+id/srkttableRow12"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="@color/Black" >
<TextView
android:id="@+id/srktrnd12"
android:layout_gravity="left|center"
android:layout_weight="1"
android:gravity="center"
android:textColor="@color/White"
android:textSize="15sp" />
<TextView
android:id="@+id/srktref12"
android:layout_gravity="right|center"
android:layout_weight="1"
android:gravity="center"
android:textColor="@color/White"
android:textSize="15sp" />
</TableRow>
</TableLayout>
</RelativeLayout>
</ScrollView>

le fichier journal est indiqué ci-dessous


   03-26 23:49:22.333: D/AndroidRuntime(497): Shutting down VM
03-26 23:49:22.333: W/dalvikvm(497): threadid=1: thread exiting with uncaught exception (group=0x40015560)
03-26 23:49:22.353: E/AndroidRuntime(497): FATAL EXCEPTION: main
03-26 23:49:22.353: E/AndroidRuntime(497): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.iolcalci/com.example.iolcalci.Menu}: java.lang.NullPointerException
03-26 23:49:22.353: E/AndroidRuntime(497):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
03-26 23:49:22.353: E/AndroidRuntime(497):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
03-26 23:49:22.353: E/AndroidRuntime(497):  at android.app.ActivityThread.access$1500(ActivityThread.java:117)
03-26 23:49:22.353: E/AndroidRuntime(497):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
03-26 23:49:22.353: E/AndroidRuntime(497):  at android.os.Handler.dispatchMessage(Handler.java:99)
03-26 23:49:22.353: E/AndroidRuntime(497):  at android.os.Looper.loop(Looper.java:123)
03-26 23:49:22.353: E/AndroidRuntime(497):  at android.app.ActivityThread.main(ActivityThread.java:3683)
03-26 23:49:22.353: E/AndroidRuntime(497):  at java.lang.reflect.Method.invokeNative(Native Method)
03-26 23:49:22.353: E/AndroidRuntime(497):  at java.lang.reflect.Method.invoke(Method.java:507)
03-26 23:49:22.353: E/AndroidRuntime(497):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
03-26 23:49:22.353: E/AndroidRuntime(497):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
03-26 23:49:22.353: E/AndroidRuntime(497):  at dalvik.system.NativeStart.main(Native Method)
03-26 23:49:22.353: E/AndroidRuntime(497): Caused by: java.lang.NullPointerException
03-26 23:49:22.353: E/AndroidRuntime(497):  at com.example.iolcalci.Srkt_x.onCreateView(Srkt_x.java:21)
03-26 23:49:22.353: E/AndroidRuntime(497):  at android.support.v4.app.Fragment.performCreateView(Fragment.java:1460)
03-26 23:49:22.353: E/AndroidRuntime(497):  at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:911)
03-26 23:49:22.353: E/AndroidRuntime(497):  at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1088)
03-26 23:49:22.353: E/AndroidRuntime(497):  at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
03-26 23:49:22.353: E/AndroidRuntime(497):  at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1444)
03-26 23:49:22.353: E/AndroidRuntime(497):  at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:551)
03-26 23:49:22.353: E/AndroidRuntime(497):  at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1129)
03-26 23:49:22.353: E/AndroidRuntime(497):  at android.app.Activity.performStart(Activity.java:3791)
03-26 23:49:22.353: E/AndroidRuntime(497):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1620)
03-26 23:49:22.353: E/AndroidRuntime(497):  ... 11 more

Je ne suis pas en mesure de comprendre le problème .toute solution?

EDIT :
ligne 22:Float result=getArguments().getFloat("RÉSULTAT");

EDIT 2 : paramètre comme indiqué ci-dessous:

IOLPower_srkt=Srkt();
Bundle srkt_bundle=new Bundle();
srkt_bundle.putFloat("RESULT", IOLPower_srkt);
srkt_frag.setArguments(srkt_bundle);

ici Srkt() renvoie la valeur float
vérifiez code


IOLPower_srkt=Srkt();
Bundle srkt_bundle=new Bundle();
srkt_bundle.putFloat("RESULT", IOLPower_srkt);
srkt_frag.setArguments(srkt_bundle);
IOLPower_bink=Binkhorst();
Bundle bink_bundle=new Bundle();
bink_bundle.putFloat("RESULT", IOLPower_bink);
bink_frag.setArguments(bink_bundle);
IOLPower_srk2=Srk2();
if((Math.ceil(IOLPower_srk2)-IOLPower_srk2)>0.5){
srk2_rnd=(float) Math.floor(IOLPower_srk2);
}else{
srk2_rnd=(float) Math.ceil(IOLPower_srk2);
}
Bundle srk2_bundle=new Bundle();
srk2_bundle.putFloat("RESULT", srk2_rnd);
srk2_frag.setArguments(srk2_bundle);
IOLPower_holl=Holladay();
Bundle holl_bundle=new Bundle();
holl_bundle.putFloat("RESULT", IOLPower_holl);
holl_frag.setArguments(holl_bundle);
}
});
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
ft.replace(R.id.fragment_container, srkt_frag);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.commit();
TabSpec specs1=mTab.newTabSpec("tag1");
specs1.setContent(R.id.fragment_container);
specs1.setIndicator("SRK/T");
mTab.addTab(specs1);
TabSpec specs2=mTab.newTabSpec("tag2");
specs2.setContent(R.id.fragment_container);
specs2.setIndicator("SRK II");
mTab.addTab(specs2);
TabSpec specs3=mTab.newTabSpec("tag3");
specs3.setContent(R.id.fragment_container);
specs3.setIndicator("HOLLADAY");
mTab.addTab(specs3);
TabSpec specs4=mTab.newTabSpec("tag4");
specs4.setContent(R.id.fragment_container);
specs4.setIndicator("BINKHORST");
mTab.addTab(specs4);

OriginalL'auteur human | 2013-03-26