How to do it...

First, let us take a look at how we will implement this recipe in Android:

  1. Now, after installing our dependencies, we will need to create the UI for our calls. To do that, simply copy and paste the following special button XML code into your layout:
      <com.google.android.gms.common.SignInButton       android:id="@+id/gbtn"       android:layout_width="368dp"       android:layout_height="wrap_content"      android:layout_marginLeft="16dp"      android:layout_marginTop="30dp"      app:layout_constraintLeft_toLeftOf="parent"      app:layout_constraintTop_toTopOf="parent"      android:layout_marginRight="16dp"      app:layout_constraintRight_toRightOf="parent" />

The result will be this:

Figure 11: Google Sign-in button after the declaration
  1. After doing that, let's see the ...

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