Android: add support for various url schemes.

Android WebView does not handle schemes by default, such
as mailto:, geo:, and others, but will instead show an
"ERR_UNKNOWN_URL_SCHEME" error. This patch fixes it by
starting ACTION_VIEW Intent for specified scheme, meanwhile
showing the same "ERR_UNKNOWN_URL_SCHEME" error page for
invalid cases as before.

[ChangeLog][Android] Added support for various url schemes.

Taks-number: QTBUG-53736
Change-Id: Ib569ec1598f76f823b2293446ea4e513764ef1fa
Reviewed-by: Christian Stromme <christian.stromme@qt.io>

1 files changed, 22 insertions, 0 deletions

diff --git a/src/jar/src/org/qtproject/qt5/android/view/QtAndroidWebViewController.java b/src/jar/src/org/qtproject/qt5/android/view/QtAndroidWebViewController.java
index 1c46847..0f4b424 100644
--- a/src/jar/src/org/qtproject/qt5/android/view/QtAndroidWebViewController.java
+++ b/src/jar/src/org/qtproject/qt5/android/view/QtAndroidWebViewController.java
@@ -39,12 +39,15 @@ package org.qtproject.qt5.android.view;
 import android.content.pm.PackageManager;
 import android.view.View;
 import android.webkit.GeolocationPermissions;
+import android.webkit.URLUtil;
 import android.webkit.ValueCallback;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
 import android.webkit.WebChromeClient;
 import java.lang.Runnable;
 import android.app.Activity;
+import android.content.Intent;
+import android.net.Uri;
 import java.lang.String;
 import android.webkit.WebSettings;
 import android.util.Log;
@@ -106,6 +109,25 @@ public class QtAndroidWebViewController
         QtAndroidWebViewClient() { super(); }
 
         @Override
+        public boolean shouldOverrideUrlLoading(WebView view, String url)
+        {
+            // handle http: and http:, etc., as usual
+            if (URLUtil.isValidUrl(url))
+                return false;
+
+            // try to handle geo:, tel:, mailto: and other schemes
+            try {
+                Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
+                view.getContext().startActivity(intent);
+                return true;
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+
+            return false;
+        }
+
+        @Override
         public void onLoadResource(WebView view, String url)
         {
             super.onLoadResource(view, url);