Error inflating class android.support.design.widget.CoordinatorLayout

Question

I would like use a FloatingActionButton on my application, I read this : https://guides.codepath.com/android/Floating-Action-Buttons#google-s-official-support-library but wh

Answer 1

You need to add in your app's build gradle the following support library.

    compile 'com.android.support:design:23.0.1'

that was last year, now the latest version is

    compile 'com.android.support:design:27.0.2'

Answer 2

needed both:

• extend AppCompatActivity instead of FragmentActivity

  public class MyActivity extends AppCompatActivity
  

• parent of used style (/res/values/styles.xml)

  <style name="MyStyle" parent="Theme.AppCompat">
  

additionally:

• define colors in styles.xml

  <item name="colorPrimary">@color/primary</item>
  <item name="colorPrimaryDark">@color/primary_dark</item>
  <item name="colorAccent">@color/accent</item>
  

Answer 3

Please change it into AppCompatActivity if you use Activity. Probably it becomes the error when it is Activity.

Answer 4

For me, I came across this error when using a mix of androidx and android.support.v7 libraries.

See my solution for that version of this error here: https://stackoverflow.com/a/52490825/1762493

Answer 5

You have to include the support libraries.

1. Go to "Project Structure" -> Dependencies
2. On the right side click "+" and select "1. Library dependency"
3. Search for "android.support"
4. Add both:
   • com.android.support:appcompat-v7:.......
   • com.android.support:design:........
5. Sync Gradle Happy codding! :)

Answer 6

For those using AndroidX Dependency. In your xml files make sure all your

 android.support.???

nodes inside CoordinatorLayout's (like included ActionBars) are also replaced with

androidx.??? (or com.google.android.???)

ones .