openhpi/xikolo-android

📱 Android App of the HPI MOOC Platform

Xikolo Android App

The official Android App for openHPI, openSAP, mooc.house and OpenWHO.

Setup

Clone git repository:

git clone --recursive https://github.com/openHPI/xikolo-android

Development

Please use the Android Studio IDE, since we rely on the Gradle build system.

Release Builds

Signing credentials are protected with git-crypt. To compile release builds, install git-crypt:

brew install git-crypt

And unlock the encrypted files:

git-crypt unlock /path/to/xikolo-android.key

The keyfile is managed by the openHPI team and should never be made public or added to the repository.

Version History

Please push a git tag for every released build.

Google Play Links

• openHPI on Google Play
• openSAP on Google Play
• mooc.house on Google Play
• OpenWHO on Google Play

Contributing

Please feel free to help us with the ongoing development of this app. See open issues to get some inspiration and open a Merge Request as soon as you are ready to go.

xikolo-android's Issues

Collab Space Config / Removal

Each course can enable/disable collab spaces. The app should implement this config.

Certificates

Delete Viewed Video Downloads

As a user i would like to have an option that the app deletes viewed videos after watching or n minutes after watching...

Learning Items Device Suggestions

Some learning items are not optimized for mobile or opened externally. We should better communicate this to learners, by suggesting a proper device advise per item type, where appropriate.

Implement Preference Support Library

See http://developer.android.com/tools/support-library/features.html#v14-preference

Channels

for those platforms that support Channels

Audio (Background) Playback

It would be great if it was possible to listen to videos when the device screen is turned off.

Download is not working with some cdn servers

http://7u2l3j.com2.z0.glb.qiniucdn.com/I402015-w1-6-pip-HD.mp4

Need retesting after merge of ion download version

List contributers within app

Maintain "Footer" Links

The links for impress, data privacy, etc. seems broken for some platforms. Think about how we can maintain these links for every platform in a better way. Also these should be opened with chrome custom tabs.

Improve courses date labeling

This is the new logic for the date label of courses:

If a course has no start and end date

• EN: Coming soon
• DE: Bald verfügbar

If a course has only a start date in past

• EN: Since start_date
• DE: Seit start_date
• WHO-only:
  • EN: Self-paced
  • DE: Selbststudium

If a course has only a start date in future

• EN: Beginning start_date
• DE: Ab start_date

If a course a start and end date

• start_date - end_date

Add SAP Single On

Add SAP Single On to login

Some documentation: http://scn.sap.com/docs/DOC-49579

Follow Googles Design Guides in text styling

Add Ribbon to current (running) courses

in course list

Add Cast controls to local video player in VideoActivity

Course Filter

Filter courses for language or whitelisted classifier. Has to be merged with course search somehow.

Categories and new sorting for courses

Organize courses in categories and adapt course sorting like the web app.

Add ripple effect for Buttons and CardViews.

Add the ripple effect which was introduced with API level 21 for Buttons and CardViews.

http://developer.android.com/reference/android/graphics/drawable/RippleDrawable.html

Course Teaser Video

Add course teaser video to course info page.

Adaptive Icons (Oreo)

https://developer.android.com/guide/practices/ui_guidelines/icon_design_adaptive.html

Documents

Add documents feature for OpenWHO.

Implement Design Support Library

This could be achieved by using the new design support library

Download folder should be exluded from auto backups

Make content of app available in device search

Maybe start with course titles

Replace all ListViews/GridViews with RecyclerViews.

Replace all ListViews/GridViews with new RecyclerViews.

http://developer.android.com/reference/android/support/v7/widget/RecyclerView.html

Feedback Email

Add a feedback email option to the about section in the settings like on iOS.

/cc @mathebox

Improve Deep Link handling for Course

When a Deep Link is handled for a course (see CourseActivity), all courses are fetched and the matching course is extracted. This can be improved by fetching directly the specific course, since we have access to the course code.

Improve in-app notifications.

Change style of in-app notifications on blank pages. Shouldn't use CardViews.

Offer different playback speeds

as in webpage player

Different start dates

Mit der neuen API V2 (/api/v2/courses) gibt es ein Anzeigedatum. Das soll für die Anzeige in der Liste verwendet werden. Für die Steuerung des Zugangs soll das normale startDate verwendet werden.

Bei Bedarf kann ich ein Kurs mit diesen Eigenschaften zur Verfügung stellen.

"startDate": "2015-11-11T09:00:00Z",
"endDate": "2015-12-09T09:30:00Z",
"displayStartDate": "2015-11-11T09:00:00Z"

Downloads Section crashes

Downloads Section crashes sometimes during scrolling.

on focussing text inputs in webview no keyboard pops up

New unvisited item icon

Use differnet backgrounds for showing visited items instead of the bullet

Improve Login UI

Improve the Login Section with proper Material Design and maybe User Onboarding flow.

Highlight Hidden Courses

Chinese letters in video URLs break video player

originally reported by Sheng Luo

Add chromecast support

Simple Szenario: Watch picture in picture Video on Chromecast Device
Complex Szenario: Watch dual stream videos one on the video, the other on the device

Setup Testing

Use exercise_type attribute for self test Items.

Distinguish between

• self test
• survey
• main
• bonus
  exercise types.

Combine successful download notifications

If I download a full section I do not want too see multiple notifications for a successful download but one combined

Strange image scaling

Certificate Requirements

Show certificate requirements in course details view. Also refactor layout of this page.

Check if Custom Tabs Support Library can replace third party Tab Library

For now we're using a third party library for material design styled tabs. Maybe the Android Support Library for Custom Tabs an replace that.

http://developer.android.com/tools/support-library/features.html#custom-tabs

ConcurrentModificationException when aborting download

_Merge Request #13 only_

App crashes under certain circumstances when aborting the download of a video.

How to reproduce:

• Download a video
• As soon as the download starts download any other video
• Wait for all downloads to start and then abort the download of the video you started in step 1

Stacktrace:

java.util.ConcurrentModificationException
            at java.util.ArrayList$ArrayListIterator.next(ArrayList.java:569)
            at de.xikolo.model.DownloadModel.cancelDownload(DownloadModel.java:93)
            at de.xikolo.controller.module.helper.DownloadViewController$2.onClick(DownloadViewController.java:119)
            at android.view.View.performClick(View.java:4084)
            at android.view.View$PerformClick.run(View.java:16966)
            at android.os.Handler.handleCallback(Handler.java:615)
            at android.os.Handler.dispatchMessage(Handler.java:92)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:4745)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:511)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
            at dalvik.system.NativeStart.main(Native Method)

Empty State for Announcements

Please migrate to ViewModel/LiveData at the same time.

Subtitles

When subtitles are available for a video, the user should be able to display them. This is supported since Android 4.4: https://www.youtube.com/watch?v=hCRGc2PcmB8

Therefore, the new API has to deliver links to the vtt files.

Deep Link for Course Root URL

Dual Stream Videos

channel support

Add channel support for those builds where the platform uses channels

Support SD Cards for downloads and app install location

So they can use SD-cards.