在应用所有解决方案android后，按钮没有响应点击

activity_verify.xml

    <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="https://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingLeft="16dp"
    android:paddingRight="16dp"
    android:background="#ffffff"
    android:gravity="center_vertical">
<TextView
        android:id="@+id/countdown"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:focusable="false"
        android:fontFamily="sans-serif"
     android:textAppearance="@style/TextAppearance.AppCompat.Display1"
        android:textColor="@android:color/black"
        android:textSize="30sp"
        android:textStyle="bold" />
    <EditText
        android:id="@+id/otp"
        style="@android:style/Widget.DeviceDefault.Light.EditText"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="numberDecimal"
        android:maxLength="4"
        android:layout_below="@id/countdown"
        android:layout_marginTop="10dp"
        android:layout_marginBottom="30dp"
        android:hint="Enter 4 digit OTP sent to your phone"/>
    <Button
        android:id="@+id/verification"
        style="@style/Widget.AppCompat.Button.Borderless.Colored"
        android:layout_width="80dp"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:layout_marginBottom="60dp"
        android:background="@android:color/holo_blue_dark"
        android:fontFamily="sans-serif"
        android:text="@string/bttext"
        android:textAlignment="center"
        android:textColor="@android:color/white"
        android:textSize="18sp"
        android:textStyle="bold"
        android:layout_below="@id/otp"/>
    </RelativeLayout>
    <?xml version="1.0" e