Fix the issue where the promo WebView does not respond to click events

Author: quanquan1

affirm/src/main/java/com/affirm/android/PromotionWebView.java

@@ -3,6 +3,7 @@
 import android.content.Context;
 import android.os.Build;
 import android.util.AttributeSet;
+import android.view.GestureDetector;
 import android.view.MotionEvent;
 import android.view.View;
 import android.webkit.CookieManager;
@@ -49,60 +50,31 @@ public PromotionWebView(Context context, AttributeSet attrs) {
         AffirmUtils.debuggableWebView(getContext());
         setWebViewClient(new PromoWebViewClient(this));
         setWebChromeClient(new AffirmWebChromeClient(this));
-
-
-        setOnTouchListener(new View.OnTouchListener() {
-
-            private static final int FINGER_RELEASED = 0;
-            private static final int FINGER_TOUCHED = 1;
-            private static final int FINGER_DRAGGING = 2;
-            private static final int FINGER_UNDEFINED = 3;
-
-            private int fingerState = FINGER_RELEASED;
-
+        GestureDetector gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
             @Override
-            public boolean onTouch(View view, MotionEvent motionEvent) {
-
-                switch (motionEvent.getAction()) {
-
-                    case MotionEvent.ACTION_DOWN:
-                        if (fingerState == FINGER_RELEASED) {
-                            fingerState = FINGER_TOUCHED;
-                        } else {
-                            fingerState = FINGER_UNDEFINED;
-                        }
-                        break;
-
-                    case MotionEvent.ACTION_UP:
-                        if (fingerState != FINGER_DRAGGING) {
-                            fingerState = FINGER_RELEASED;
-                            if (webViewClickListener != null) {
-                                webViewClickListener.onClick((View) view.getParent());
-                            }
-                        } else {
-                            fingerState = FINGER_RELEASED;
-                        }
-                        break;
-
-                    case MotionEvent.ACTION_MOVE:
-                        if (fingerState == FINGER_TOUCHED || fingerState == FINGER_DRAGGING) {
-                            fingerState = FINGER_DRAGGING;
-                        } else {
-                            fingerState = FINGER_UNDEFINED;
-                        }
-                        break;
-
-                    default:
-                        fingerState = FINGER_UNDEFINED;
-
-                }
-
-                return false;
+            public boolean onSingleTapConfirmed(MotionEvent e) {
+                performClick();
+                return true;
             }
         });
+        setOnTouchListener((view, event) -> {
+            if (gestureDetector.onTouchEvent(event)) {
+                return true;
+            }
+            return false;
+        });
         setBackgroundColor(getResources().getColor(android.R.color.transparent));
     }
 
+    @Override
+    public boolean performClick() {
+        super.performClick();
+        if (webViewClickListener != null) {
+            webViewClickListener.onClick((View) getParent());
+        }
+        return true;
+    }
+
     public void loadWebData(String promoHtml, String remoteCssUrl, String typeface) {
         final String html = initialHtml(promoHtml, remoteCssUrl, typeface);
         loadDataWithBaseURL(null, html, TEXT_HTML, UTF_8, null);