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

Posted by Mayank Sharma on


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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    Very informative ..i suggest this blog to my friends..Thank you for sharing
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    1. Mayadi - A Knowledge Source29 April 2017 at 06:50

      Thank you Geeta, its our pleasure to keep people updated.
      Thanks you so much for support !!!

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  3. DroidBlog15 August 2017 at 08:45

    Thanks for solving problems of Android developers. It was very helpful.

    ReplyDelete
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      It's our pleasure. Thanks for the comment and to tell us that you found our blog useful, it encourages us to work more and write more blogs.
      Thank you so much

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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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    1. Mayank Sharma8 May 2018 at 09:53

      Hey,
      I know you just care about building backlinks for your websites but do you know this blog is not about any tutorial :P
      Btw no problem, you can correct your comment if you have seen this reply.

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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

      Delete
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