android - cannot change tabs in TabLayout -

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i new android programming , trying change tab on touch of tab header text. here code

activity_main

<android.support.design.widget.appbarlayout>      <android.support.design.widget.collapsingtoolbarlayout>          <imageview             android:id="@+id/image"             android:layout_width="fill_parent"             android:layout_height="match_parent"             android:src="@drawable/test_image"             app:layout_behavior="@string/appbar_scrolling_view_behavior"             android:scaletype="centercrop" />          <android.support.design.widget.tablayout             android:id="@+id/tabs"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_gravity="top"             app:layout_behavior="@string/appbar_scrolling_view_behavior"             android:background="@android:color/transparent"             app:layout_collapsemode="pin"             />         <android.support.v7.widget.toolbar/>     </android.support.design.widget.collapsingtoolbarlayout>  </android.support.design.widget.appbarlayout>

mainactivity.java

tablayout = (tablayout) findviewbyid(r.id.tabs); tablayout.setupwithviewpager(viewpager);

output application tablayout fragments tabs contain cardview. when touch tab header able switch different tabs can switch tab swiping fragments finger.however when add this

tablayout.setontabselectedlistener(new tablayout.ontabselectedlistener() {         @override         public void ontabselected(tablayout.tab tab) {               charsequence _header = tab.gettext();             selected_tab_header = string.valueof(_header);              if (selected_tab_header == "tab1") {                 headerimage.setimageresource(r.drawable.someimage);              }          }          @override         public void ontabreselected(tablayout.tab tab) {          }          @override         public void ontabunselected(tablayout.tab tab) {         }     });

i cannot switch tab's anymore i.e when touch tab header though code fired(image changes) tab not switched swiping tab's finger still works.is there thing missing code? or there other way achieve this?

dont forget viewpager.setcurrentitem(tab.getposition()) in ontabselected:

  public void ontabselected(tablayout.tab tab) {          charsequence _header = tab.gettext();         selected_tab_header = string.valueof(_header);          if (selected_tab_header == "tab1") {              headerimage.setimageresource(r.drawable.someimage);         }          if (viewpager != null) {              viewpager.setcurrentitem(tab.getposition());         }    }

hope helps!!


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