Attempt to invoke virtual method 'android.graphics.drawable.Drawable$ConstantState.newDrawable()' on a null

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Okay, I think it occurred first time for you. But don't worry, we will solve it by just let you know about the issue that why is it occurring. Actually it is happening due to issue in you fab button. You tried something out of the box and got this issue. What we meant about out of the box, you tried to customize that fab button.

Error :

java.lang.NullPointerException: Attempt to invoke virtual method 'android.graphics.drawable.Drawable android.graphics.drawable.Drawable$ConstantState.newDrawable()' on a null object reference

Solution :

Without taking your so much time. We are going to tell you the reason that it is occurred due to background issue in fab button.

android:backgroundTint="@color/colorPrimaryDark"
you have to put app in place of android.

app:backgroundTint="@color/colorPrimaryDark"
That's it for today, if you still have any confusion, clear them by commenting below. And Be Updated with our YouTube Channel.


Comments

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      Thank you Geeta, its our pleasure to keep people updated.
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    Thanks for solving problems of Android developers. It was very helpful.

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  4. Unknown23 October 2017 at 13:38

    valla cokkkkk tesekkür ederim :) its work =>app:backgroundTint="@color/colorPrimaryDark"

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  6. Nilesh Maurya19 February 2018 at 02:01

    Thanks ,Solve my problem

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    1. Mayank Sharma8 May 2018 at 09:49

      It's our pleasure, nilesh.

      We don't want to sound like spam but still If you want to learn Android.
      You can subscribe our YouTube channel.
      https://www.youtube.com/mayadi

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