1 files changed, 67 insertions, 0 deletions

diff --git a/g4f/gui/server/android_gallery.py b/g4f/gui/server/android_gallery.py
new file mode 100644
index 00000000..9101bc02
--- /dev/null
+++ b/g4f/gui/server/android_gallery.py
@@ -0,0 +1,67 @@
+from kivy.logger import Logger
+from kivy.clock import Clock
+
+from jnius import autoclass
+from jnius import cast
+from android import activity
+
+PythonActivity = autoclass('org.kivy.android.PythonActivity')
+Intent = autoclass('android.content.Intent')
+Uri = autoclass('android.net.Uri')
+
+MEDIA_DATA = "_data"
+RESULT_LOAD_IMAGE = 1
+
+Activity = autoclass('android.app.Activity')
+
+def user_select_image(on_selection):
+    """Open Gallery Activity and call callback with absolute image filepath of image user selected.
+    None if user canceled.
+    """
+
+    currentActivity = cast('android.app.Activity', PythonActivity.mActivity)
+
+    # Forum discussion: https://groups.google.com/forum/#!msg/kivy-users/bjsG2j9bptI/-Oe_aGo0newJ
+    def on_activity_result(request_code, result_code, intent):
+        if request_code != RESULT_LOAD_IMAGE:
+            Logger.warning('user_select_image: ignoring activity result that was not RESULT_LOAD_IMAGE')
+            return
+
+        if result_code == Activity.RESULT_CANCELED:
+            Clock.schedule_once(lambda dt: on_selection(None), 0)
+            return
+
+        if result_code != Activity.RESULT_OK:
+            # This may just go into the void...
+            raise NotImplementedError('Unknown result_code "{}"'.format(result_code))
+
+        selectedImage = intent.getData();  # Uri
+        filePathColumn = [MEDIA_DATA]; # String[]
+        # Cursor
+        cursor = currentActivity.getContentResolver().query(selectedImage,
+                filePathColumn, None, None, None);
+        cursor.moveToFirst();
+
+        # int
+        columnIndex = cursor.getColumnIndex(filePathColumn[0]);
+        # String
+        picturePath = cursor.getString(columnIndex);
+        cursor.close();
+        Logger.info('android_ui: user_select_image() selected %s', picturePath)
+
+        # This is possibly in a different thread?
+        Clock.schedule_once(lambda dt: on_selection(picturePath), 0)
+
+    # See: http://pyjnius.readthedocs.org/en/latest/android.html
+    activity.bind(on_activity_result=on_activity_result)
+
+    intent = Intent()
+
+    # http://programmerguru.com/android-tutorial/how-to-pick-image-from-gallery/
+    # http://stackoverflow.com/questions/18416122/open-gallery-app-in-android
+    intent.setAction(Intent.ACTION_PICK)
+    # TODO internal vs external?
+    intent.setData(Uri.parse('content://media/internal/images/media'))
+    # TODO setType(Image)?
+
+    currentActivity.startActivityForResult(intent, RESULT_LOAD_IMAGE)
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