android: Add button to open privacy URL

In the About dialog, add a "Privacy Policy"
button when a privacy URL is set, i.e.
the `--with-privacy-policy-url=<URL>` autogen
option is used.
Clicking the button will fire an Intent
to open that URL.

Use a custom build config field as described at [1]
to make the privacy policy URL available to
the Java code.

[1] https://developer.android.com/build/gradle-tips#share-custom-fields-and-resource-values-with-your-app-code

Change-Id: I6e1a9aff885e4ce132284f49e722b3343fc51b79
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/159445
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>

4 files changed, 14 insertions, 0 deletions

diff --git a/android/Bootstrap/Makefile.shared b/android/Bootstrap/Makefile.shared
index ffb2c16a832d..682c98709630 100644
--- a/android/Bootstrap/Makefile.shared
+++ b/android/Bootstrap/Makefile.shared
@@ -113,5 +113,6 @@ liboSettings.gradle: $(BUILDDIR)/config_build.mk $(BUILDDIR)/config_host.mk
 		&& echo "    minSdkVersion = $(ANDROID_API_LEVEL)" \
 		&& echo "    versionCode project.hasProperty('cmdVersionCode') ? cmdVersionCode.toInteger() : $(if $(versionCode),$(versionCode),1)" \
 		&& echo "    versionName '$(LIBO_VERSION_MAJOR).$(LIBO_VERSION_MINOR).$(LIBO_VERSION_MICRO).$(LIBO_VERSION_PATCH)$(LIBO_VERSION_SUFFIX)$(LIBO_VERSION_SUFFIX_SUFFIX)/$(shell cd $(SRCDIR) && git log -1 --format=%h)/$(OOO_VENDOR)'" \
+		&& echo "    buildConfigField('String', 'PRIVACY_POLICY_URL', '\"$(PRIVACY_POLICY_URL)\"')" \
 		&& echo "}" \
 	) > $@
diff --git a/android/source/res/values-de/strings.xml b/android/source/res/values-de/strings.xml
index 88fdbaedd73d..bd979b78f8ae 100644
--- a/android/source/res/values-de/strings.xml
+++ b/android/source/res/values-de/strings.xml
@@ -13,6 +13,7 @@
 
     <string name="about_license">Lizenz anzeigen</string>
     <string name="about_notice">Hinweise anzeigen</string>
+    <string name="about_privacy_policy">Datenschutzerklärung</string>
 
     <string name="new_textdocument">Neues Textdokument</string>
     <string name="new_presentation">Neue Präsentation</string>
diff --git a/android/source/res/values/strings.xml b/android/source/res/values/strings.xml
index 77bfc8c110e0..d2262406136e 100644
--- a/android/source/res/values/strings.xml
+++ b/android/source/res/values/strings.xml
@@ -13,6 +13,7 @@
 
     <string name="about_license">Show License</string>
     <string name="about_notice">Show Notice</string>
+    <string name="about_privacy_policy">Privacy Policy</string>
 
     <string name="create_file">Create New File</string>
     <string name="new_textdocument">New Text Document</string>
diff --git a/android/source/src/java/org/libreoffice/AboutDialogFragment.java b/android/source/src/java/org/libreoffice/AboutDialogFragment.java
index 17c43787e619..4abf9c14a35f 100644
--- a/android/source/src/java/org/libreoffice/AboutDialogFragment.java
+++ b/android/source/src/java/org/libreoffice/AboutDialogFragment.java
@@ -88,6 +88,17 @@ public class AboutDialogFragment extends DialogFragment {
                     }
                 });
 
+        // when privacy policy URL is set (via '--with-privacy-policy-url=<url>' autogen option),
+        // add button to open that URL
+        final String privacyUrl = BuildConfig.PRIVACY_POLICY_URL;
+        if (!privacyUrl.isEmpty() && privacyUrl != "undefined") {
+            builder.setNeutralButton(R.string.about_privacy_policy, (DialogInterface dialog, int id) -> {
+                Intent openPrivacyUrlIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(privacyUrl));
+                startActivity(openPrivacyUrlIntent);
+                dialog.dismiss();
+            });
+        }
+
         return builder.create();
     }