deepak deepak - 10 days ago 6
Android Question

Snackbar is not working within fragment class

I am trying to show snackbar view when i click on button but it shows force close error when i click on button

I have define fragment class below and also error log.

i have fragment class:

public class HomeFragment extends Fragment {

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_home, container, false);
context = getActivity();
initUI(rootView);
return rootView;
}

private void initUI(View view) {

btn= (Button) view.findViewById(R.id.btnpress);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Snackbar.make(getView(),"SnackBAr Test" , Snackbar.LENGTH_LONG).show();
}
});
}


fragment_home.xml

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


<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:orientation="horizontal"
android:paddingBottom="40dp" >

<Button
android:id="@+id/btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:Text="PLEASE PRESS" />

</LinearLayout>

</RelativeLayout>


When i press on button it is not showing
snackbar
.

it gives below error log:

java.lang.NoClassDefFoundError: android.support.design.widget.CoordinatorLayout
at android.support.design.widget.Snackbar.findSuitableParent(Snackbar.java:237)
at android.support.design.widget.Snackbar.make(Snackbar.java:206)
at com.example.test.fragment.HomeFragment$3.onLeftCardExit(HomeFragment.java:168)
at android.view.ViewPropertyAnimator$AnimatorEventListener.onAnimationEnd(ViewPropertyAnimator.java:1030)
at android.animation.ValueAnimator.endAnimation(ValueAnimator.java:1056)
at android.animation.ValueAnimator.access$400(ValueAnimator.java:50)
at android.animation.ValueAnimator$AnimationHandler.doAnimationFrame(ValueAnimator.java:644)
at android.animation.ValueAnimator$AnimationHandler.run(ValueAnimator.java:660)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:788)
at android.view.Choreographer.doCallbacks(Choreographer.java:591)
at android.view.Choreographer.doFrame(Choreographer.java:559)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:774)
at android.os.Handler.handleCallback(Handler.java:808)
at android.os.Handler.dispatchMessage(Handler.java:103)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5333)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:824)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:640)
at dalvik.system.NativeStart.main(Native Method)


How can i solved this error ?

Answer

I have solved this:

It is fine if we do not include CoordinatedLayout to my fragment_home.xml

Solution:

Defined : private RelativeLayout mRoot;

Now initialize in initUI(View view)

mRoot = (RelativeLayout) view.findViewById(R.id.mainrl);

and on Button click event put the following code:

 Snackbar.make(mRoot, "Had a snack at Snackbar", Snackbar.LENGTH_LONG).show();

Now main thing about this is:

just change current theme to Theme.AppCompat.Light.NoActionBar

It Done.!!!