feat: add google pay button

Author: konclave

android/src/main/java/com/reactnativepayments/GooglePayImage.java

@@ -0,0 +1,24 @@
+package com.reactnativepayments;
+
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.RelativeLayout;
+
+/**
+ * Image of Google Pay Button (buy_with_googlepay_button)
+ * see https://developers.google.com/pay/api/android/guides/brand-guidelines
+ */
+public class GooglePayImage extends RelativeLayout {
+
+    public GooglePayImage(Context context) {
+        super(context);
+
+        View view =  LayoutInflater.from(getContext()).inflate(
+                R.layout.buy_with_googlepay_button, null);
+
+        this.addView(view);
+    }
+
+
+}

android/src/main/java/com/reactnativepayments/GooglePayImageManager.java

@@ -0,0 +1,23 @@
+package com.reactnativepayments;
+
+import android.view.LayoutInflater;
+import android.view.View;
+
+import com.facebook.react.uimanager.SimpleViewManager;
+import com.facebook.react.uimanager.ThemedReactContext;
+
+public class GooglePayImageManager extends SimpleViewManager<View> {
+
+    public static final String REACT_CLASS = "GooglePayImageView";
+
+    @Override
+    public String getName() {
+        return REACT_CLASS;
+    }
+
+    @Override
+    protected View createViewInstance(ThemedReactContext reactContext) {
+        return LayoutInflater.from(reactContext).inflate(
+                R.layout.buy_with_googlepay_button, null);
+    }
+}

android/src/main/java/com/reactnativepayments/ReactNativePaymentsPackage.java

@@ -10,19 +10,17 @@
 import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.uimanager.ViewManager;
 import com.facebook.react.bridge.JavaScriptModule;
+
 public class ReactNativePaymentsPackage implements ReactPackage {
     @Override
     public List<NativeModule> createNativeModules(ReactApplicationContext reactContext) {
       return Arrays.<NativeModule>asList(new ReactNativePaymentsModule(reactContext));
     }
 
-    // Deprecated RN 0.47
-    public List<Class<? extends JavaScriptModule>> createJSModules() {
-      return Collections.emptyList();
-    }
-
     @Override
     public List<ViewManager> createViewManagers(ReactApplicationContext reactContext) {
-      return Collections.emptyList();
+      return Collections.<ViewManager>singletonList(
+                new GooglePayImageManager()
+        );
     }
 }

lib/js/index.js

@@ -1,9 +1,11 @@
 // @flow
+import {requireNativeComponent} from 'react-native';
 
 import _PaymentRequest from './PaymentRequest';
 import _NativePayments from './NativePayments';
 import { PKPaymentButton } from './PKPaymentButton';
 
 export const ApplePayButton = PKPaymentButton;
 export const PaymentRequest = _PaymentRequest;
-export const canMakePayments = _NativePayments.canMakePayments;
+export const canMakePayments = _NativePayments.canMakePayments;
+export const GooglePayButton = requireNativeComponent('GooglePayImageView')