dialog vako file

 public void showDialog(String msg) {
        dialog = new Dialog(this, R.style.Theme_AppCompat_Light_Dialog_Alert);
        dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
        dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
        dialog.setCancelable(false);
        dialog.setContentView(R.layout.buy_point);
        TextView tv_buy, tv_cancel, tv_title;

        tv_title = dialog.findViewById(R.id.textview_dialog_body);
        tv_buy = dialog.findViewById(R.id.buy_action);
        tv_cancel = dialog.findViewById(R.id.cancel_action);

        tv_title.setText(msg);

        tv_buy.setOnClickListener((View v) -> contentPresenter.UnlockContent(content_point,content_id));
        tv_cancel.setOnClickListener(v -> dialog.dismiss());

        dialog.show();

    }

xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:card="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical"
    android:id="@+id/cardlist_item"
    android:layout_width="match_parent"
    android:layout_height="130dp"
    card:cardCornerRadius="40dp"
    android:layout_marginLeft="8dp"
    android:layout_marginRight="8dp"
    android:layout_marginTop="5dp"
    android:layout_marginBottom="5dp"
    android:padding="10dp"
    android:background="@color/white">
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">

    <TextView
        style="@style/customtextview"
        android:id="@+id/textview_dialog_body"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_marginTop="10sp"
        android:gravity="center_horizontal"
        android:text="You have successfully registered\nyour account" />

    <View
        android:layout_width="fill_parent"
        android:layout_height="1sp"
        android:layout_marginTop="10sp"
        android:background="#AAAAAA" />
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:orientation="horizontal"
        android:weightSum="9">
        <TextView
            android:layout_weight="4"
            android:id="@+id/buy_action"
            android:layout_width="113dp"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:layout_marginTop="0dp"
            android:gravity="center_horizontal"
            android:fontFamily="sans-serif"
            android:text="Yes"
            android:textColor="#22AAB6"
            android:textSize="24sp" />
        <LinearLayout
            android:layout_weight="1"
            android:layout_width="1dp"
            android:layout_height="match_parent">
            <View
                android:layout_marginBottom="5dp"
                android:layout_marginTop="5dp"
                android:layout_gravity="center"
                android:layout_width="1dp"
                android:layout_height="match_parent"
                android:background="#AAAAAA"/>

        </LinearLayout>

        <TextView
            android:layout_weight="4"
            android:id="@+id/cancel_action"
            android:layout_width="113dp"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:layout_marginTop="0dp"
            android:gravity="center"
            android:fontFamily="sans-serif"
            android:text="No"
            android:textColor="#22AAB6"
            android:textSize="24sp" />

    </LinearLayout>
    </LinearLayout>




</android.support.v7.widget.CardView>