Checkbox onClick xml method calling not working (Unresolved Method) - android-layout

Question

I have a map fragment inside a Drawer activity, I just added a checkbox to the mapFragment layout like so:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/map_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".mapFragment">
<!-- TODO: Update blank fragment layout -->
<fragment
android:id="#+id/map1"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:tag="home"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:context="com.tesseract.psiclops.zero.Main" />
<EditText
android:id="#+id/editText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="87dp"
android:background="#drawable/edittext_designtst"
android:ems="10"
android:hint=" ■ ¿Qué buscas hoy?"
android:inputType="textPersonName"
android:textColor="#806b63"
android:textColorHint="#806b63"
android:textColorLink="#color/colorPrimary"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<CheckBox
android:id="#+id/follow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="16dp"
android:checked="true"
android:onClick="followIO"
android:text="Sígueme"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
I have specified the onClick method "followIO" to trigger everytime the checkbox its checked/unchecked so the user can activate/deactivate camera updates of the map kind of like a "Follow me" checkbox.
I've declared the method inside the map fragment code since its the related activity(right?)
public class mapFragment extends Fragment implements OnMapReadyCallback, LocationListener, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {
.
.
.
public void followIO(View view){
boolean checked = ((CheckBox)view).isChecked();
if(checked){
//Updates on
}else{
//Updates off
}
}
}
but I still get the warning: "Cannot Resolve symbol followIO".
When I try to uncheck the checkbox the app crashes and throws this exception:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.tesseract.psiclops.zerov2, PID: 5473
java.lang.IllegalStateException: Could not find method followIO(View) in a parent or ancestor Context for android:onClick attribute defined on view class android.support.v7.widget.AppCompatCheckBox with id 'follow'
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.resolveMethod(AppCompatViewInflater.java:327)
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:284)
at android.view.View.performClick(View.java:6256)
at android.widget.CompoundButton.performClick(CompoundButton.java:134)
at android.view.View$PerformClick.run(View.java:24701)
at android.os.Handler.handleCallback(Handler.java:789)
at android.os.Handler.dispatchMessage(Handler.java:98)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6541)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
I'm still pretty new at android and I couldn't find other solution to my problem so I hope someone can help, Thank you in advance!

Answer 1

I just found out the answer, I'll post it here in case someone find it useful:
Apparently xml method declaration doesn't work well with fragments, the best aproach is to relate a variable to the checkbox and then call an onCLicklistener. Then I called the method from there like so:
#Override
public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
.
.
.
CheckBox follow;
follow=view.findViewById(R.id.follow);
follow.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
followIO(v);
}
});