Check if a browser supports Custom Tabs before trying to open an URL

browser/android/src/main/java/com/capacitorjs/plugins/browser/Browser.java

@@ -5,11 +5,15 @@
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
 import android.net.Uri;
 import android.os.Bundle;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.browser.customtabs.*;
+import java.util.ArrayList;
+import java.util.List;
 
 /**
  * The Browser class implements Custom Chrome Tabs. See
@@ -81,6 +85,24 @@ public BrowserEventListener getBrowserEventListenerListener() {
         return browserEventListener;
     }
 
+    /**
+     * Check if custom tabs are supported.
+     * @return boolean
+     */
+    public boolean areCustomTabsSupported() {
+        PackageManager packageManager = context.getPackageManager();
+        Intent activityIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.example.com"));
+        List<ResolveInfo> resolveInfos = packageManager.queryIntentActivities(activityIntent, PackageManager.MATCH_ALL);
+
+        List<String> packageNames = new ArrayList<>();
+        for (ResolveInfo info : resolveInfos) {
+            packageNames.add(info.activityInfo.packageName);
+        }
+
+        String packageName = CustomTabsClient.getPackageName(context, packageNames, true);
+        return packageName != null;
+    }
+
     /**
      * Open the browser to the specified URL.
      * @param url

browser/android/src/main/java/com/capacitorjs/plugins/browser/BrowserPlugin.java

@@ -59,24 +59,37 @@ public void open(PluginCall call) {
             Logger.error(getLogTag(), "Invalid color provided for toolbarColor. Using default", null);
         }
 
-        // open the browser and finish
-
-        Intent intent = new Intent(getContext(), BrowserControllerActivity.class);
-        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
-        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-        getContext().startActivity(intent);
+        if (implementation.areCustomTabsSupported()) {
+            // open the browser and finish
+            Intent intent = new Intent(getContext(), BrowserControllerActivity.class);
+            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
+            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            getContext().startActivity(intent);
 
-        Integer finalToolbarColor = toolbarColor;
-        setBrowserControllerListener((activity) -> {
-            try {
-                activity.open(implementation, url, finalToolbarColor);
-                browserControllerActivityInstance = activity;
+            Integer finalToolbarColor = toolbarColor;
+            setBrowserControllerListener(
+                activity -> {
+                    try {
+                        activity.open(implementation, url, finalToolbarColor);
+                        browserControllerActivityInstance = activity;
+                        call.resolve();
+                    } catch (ActivityNotFoundException ex) {
+                        Logger.error(getLogTag(), ex.getLocalizedMessage(), null);
+                        call.reject("Unable to display URL");
+                    }
+                }
+            );
+        } else {
+            // fallback to opening the URL in the default browser
+            Intent browserIntent = new Intent(Intent.ACTION_VIEW, url);
+            browserIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            if (browserIntent.resolveActivity(getContext().getPackageManager()) != null) {
+                getContext().startActivity(browserIntent);
                 call.resolve();
-            } catch (ActivityNotFoundException ex) {
-                Logger.error(getLogTag(), ex.getLocalizedMessage(), null);
-                call.reject("Unable to display URL");
+            } else {
+                call.reject("No application can handle the URL");
             }
-        });
+        }
     }
 
     @PluginMethod