Hi everybody,
I'm building an application with 4 tabs; each tab has a scrollview
with some textview, some spinners and 2 buttons...

my problem is that only the current tab is displayed, when I click on
other tabs, nothing happens... tabs don't switch and no error is
logging....

I manage all tabs in just one activity, but I've tried to set an
activity for each tab, with their own layout xml, but the problem was
the same....

If I disable the scrollviews, I can see all tabs....

Thanks to anyone who will help me :)

here my layout xml:


<TabHost android:layout_width="match_parent"
                android:layout_height="match_parent"
        android:id="@android:id/tabhost"
                xmlns:android="http://schemas.android.com/apk/res/android";>

        <TabWidget android:layout_width="match_parent"
                   android:layout_height="wrap_content"
                   android:id="@android:id/tabs"/>
     <FrameLayout android:layout_width="match_parent"
                          android:layout_height="match_parent"
                          android:id="@android:id/tabcontent">
    <!-- TAB PORTIERI -->
   <LinearLayout android:id="@+id/tabPortieri"
                          android:layout_width="match_parent"
                          android:layout_height="match_parent"
                          android:orientation="vertical"
                          
xmlns:android="http://schemas.android.com/apk/res/android";>
        <ScrollView android:id="@+id/scroll1"
                   android:layout_height="match_parent"
                   android:layout_width="match_parent">
                <LinearLayout android:layout_width="match_parent"
                                  android:layout_height="wrap_content"
                                  android:id="@+id/bodyPortieri"
                                  android:orientation="vertical"
                                  android:paddingTop="60px">

                        <TextView android:layout_width="match_parent"
                                  android:layout_height="50px"
                                  android:text="Scegli 3 portieri:"
                                  android:textSize="20dp"
                                  android:textStyle="bold"
                                  android:id="@+id/txtPortieri"/>

                <TextView android:id="@+id/lblGk1"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Portiere #1:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnGk1"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                <TextView android:id="@+id/lblGk2"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Portiere #2:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnGk2"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                <TextView android:id="@+id/lblGk3"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Portiere #3:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnGk3"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>
                        <RelativeLayout
                                android:id="@+id/gkBtnBar"
                                android:layout_width="match_parent"
                                android:layout_height="wrap_content">

                                <Button
                                    android:id="@+id/btnSaveGk"
                                    android:layout_width="wrap_content"
                                    android:layout_height="wrap_content"
                                    android:layout_gravity="center_horizontal"
                                    android:layout_marginTop="10sp"
                                    android:text="Salva">
                                </Button>
                                <Button
                                    android:id="@+id/btnResetGk"
                                    android:layout_width="wrap_content"
                                    android:layout_height="wrap_content"
                                    android:layout_gravity="center_horizontal"
                                    android:layout_marginTop="10sp"
                                    android:text="Reset"
                                    android:layout_toRightOf="@+id/btnSaveGk">
                                </Button>
                        </RelativeLayout>

            </LinearLayout>
    </ScrollView>
   </LinearLayout>

    <!-- TAB DIFENSORI -->
  <LinearLayout android:id="@+id/tabDifensori"
                          android:layout_width="match_parent"
                          android:layout_height="match_parent"
                          android:orientation="vertical"
                          
xmlns:android="http://schemas.android.com/apk/res/android";>

    <ScrollView android:id="@+id/scroll2"
                   android:layout_height="match_parent"
                   android:layout_width="match_parent">
            <LinearLayout android:layout_width="match_parent"
                                  android:layout_height="wrap_content"
                                  android:id="@+id/bodyDifensori"
                                  android:orientation="vertical"
                                  android:paddingTop="60px">

                        <TextView android:layout_width="match_parent"
                          android:layout_height="50px"
                          android:text="Scegli 9 Difensori:"
                          android:textSize="20dp"
                          android:textStyle="bold"
                          android:id="@+id/txtDifensori"/>

                <TextView android:id="@+id/lblDif1"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Difensore #1:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnDif1"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                <TextView android:id="@+id/lblDif2"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Difensore #2:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnDif2"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                <TextView android:id="@+id/lblDif3"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Difensore #3:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnDif3"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                <TextView android:id="@+id/lblDif4"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Difensore #4:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnDif4"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                <TextView android:id="@+id/lblDif5"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Difensore #5:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnDif5"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                <TextView android:id="@+id/lblDif6"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Difensore #6:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnDif6"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                <TextView android:id="@+id/lblDif7"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Difensore #7:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnDif7"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                <TextView android:id="@+id/lblDif8"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Difensore #8:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnDif8"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                <TextView android:id="@+id/lblDif9"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Difensore #9:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnDif9"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                        <RelativeLayout
                                android:id="@+id/difBtnBar"
                                android:layout_width="match_parent"
                                android:layout_height="wrap_content">

                                <Button
                                    android:id="@+id/btnSaveDif"
                                    android:layout_width="wrap_content"
                                    android:layout_height="wrap_content"
                                    android:layout_gravity="center_horizontal"
                                    android:layout_marginTop="10sp"
                                    android:text="Salva">
                                </Button>
                                <Button
                                    android:id="@+id/btnResetDif"
                                    android:layout_width="wrap_content"
                                    android:layout_height="wrap_content"
                                    android:layout_gravity="center_horizontal"
                                    android:layout_marginTop="10sp"
                                    android:text="Reset"
                                    android:layout_toRightOf="@+id/btnSaveDif">
                                </Button>
                        </RelativeLayout>

            </LinearLayout>
    </ScrollView>
   </LinearLayout>

    <!-- TAB CENTROCAMPISTI -->
  <LinearLayout android:id="@+id/tabCentrocampisti"
                          android:layout_width="match_parent"
                          android:layout_height="match_parent"
                          android:orientation="vertical"
                          
xmlns:android="http://schemas.android.com/apk/res/android";>
    <ScrollView android:id="@+id/scroll3"
                   android:layout_height="match_parent"
                   android:layout_width="match_parent">
            <LinearLayout android:layout_width="match_parent"
                                  android:layout_height="wrap_content"
                                  android:id="@+id/bodyCentrocampisti"
                                  android:orientation="vertical"
                                  android:paddingTop="60px">

                        <TextView android:layout_width="match_parent"
                                  android:layout_height="50px"
                                  android:text="Scegli 8 centrocampisti:"
                                  android:textSize="20dp"
                                  android:textStyle="bold"
                                  android:id="@+id/txtCentrocampisti"/>

                <TextView android:id="@+id/lblCentr1"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Centrocampista #1:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnCentr1"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                <TextView android:id="@+id/lblCentr2"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Centrocampista #2:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnCentr2"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                <TextView android:id="@+id/lblCentr3"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Centrocampista #3:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnCentr3"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                <TextView android:id="@+id/lblCentr4"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Centrocampista #4:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnCentr4"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                <TextView android:id="@+id/lblCentr5"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Centrocampista #5:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnCentr5"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                <TextView android:id="@+id/lblCentr6"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Centrocampista #6:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnCentr6"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                <TextView android:id="@+id/lblCentr7"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Centrocampista #7:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnCentr7"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                <TextView android:id="@+id/lblCentr8"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Centrocampista #8:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnCentr8"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                        <RelativeLayout
                                android:id="@+id/centBtnBar"
                                android:layout_width="match_parent"
                                android:layout_height="wrap_content">

                                <Button
                                    android:id="@+id/btnSaveCentr"
                                    android:layout_width="wrap_content"
                                    android:layout_height="wrap_content"
                                    android:layout_gravity="center_horizontal"
                                    android:layout_marginTop="10sp"
                                    android:text="Salva">
                                </Button>
                                <Button
                                    android:id="@+id/btnResetCentr"
                                    android:layout_width="wrap_content"
                                    android:layout_height="wrap_content"
                                    android:layout_gravity="center_horizontal"
                                    android:layout_marginTop="10sp"
                                    android:text="Reset"
                                    
android:layout_toRightOf="@+id/btnSaveCentr">
                                </Button>
                        </RelativeLayout>

            </LinearLayout>
     </ScrollView>
    </LinearLayout>
    <!-- TAB ATTACCANTI -->
  <LinearLayout android:id="@+id/tabAttaccanti"
                          android:layout_width="match_parent"
                          android:layout_height="match_parent"
                          android:orientation="vertical"
                          
xmlns:android="http://schemas.android.com/apk/res/android";>
    <ScrollView android:id="@+id/scroll4"
                    android:layout_height="match_parent"
                    android:layout_width="match_parent">
                <LinearLayout android:layout_width="match_parent"
                                  android:layout_height="wrap_content"
                                  android:id="@+id/bodyAttaccanti"
                                  android:orientation="vertical"
                                  android:paddingTop="60px">

                        <TextView android:layout_width="match_parent"
                                  android:layout_height="50px"
                                  android:text="Scegli 6 attaccanti:"
                                  android:textSize="20dp"
                                  android:textStyle="bold"
                                  android:id="@+id/txtAttaccanti"/>

                <TextView android:id="@+id/lblAtt1"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Attaccante #1:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnAtt1"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                <TextView android:id="@+id/lblAtt2"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Attaccante #2:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnAtt2"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                <TextView android:id="@+id/lblAtt3"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Attaccante #3:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnAtt3"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                <TextView android:id="@+id/lblAtt4"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Attaccante #4:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnAtt4"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                <TextView android:id="@+id/lblAtt5"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Attaccante #5:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnAtt5"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                <TextView android:id="@+id/lblAtt6"
                                  android:layout_width="wrap_content"
                                  android:layout_height="wrap_content"
                                  android:text="Attaccante #6:"
                                  android:layout_alignParentLeft="true"/>
                <Spinner android:id="@+id/spnAtt6"
                                 android:layout_height="wrap_content"
                                 android:layout_width="match_parent"
                                 android:drawSelectorOnTop = "true"/>

                        <RelativeLayout
                                android:id="@+id/attBtnBar"
                                android:layout_width="match_parent"
                                android:layout_height="wrap_content">

                                <Button
                                    android:id="@+id/btnSaveAtt"
                                    android:layout_width="wrap_content"
                                    android:layout_height="wrap_content"
                                    android:layout_gravity="center_horizontal"
                                    android:layout_marginTop="10sp"
                                    android:text="Salva">
                                </Button>
                                <Button
                                    android:id="@+id/btnResetAtt"
                                    android:layout_width="wrap_content"
                                    android:layout_height="wrap_content"
                                    android:layout_gravity="center_horizontal"
                                    android:layout_marginTop="10sp"
                                    android:text="Reset"
                                    android:layout_toRightOf="@+id/btnSaveAtt">
                                </Button>
                        </RelativeLayout>

            </LinearLayout>
    </ScrollView>
   </LinearLayout>

  </FrameLayout>


</TabHost>

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