I built an Image Viewer App that I need to use on Zidoo z30. The problem I have is that my app doesn't show up when I got to Zidoo explorer and opening an image has the "open with" option grayed out. Zidoo doesn't recognize my app as an image viewer. In my manifest.xml file I have added the <intent-filter> <action android:name="android.intent.action.VIEW" /> <category android:name="android.intent.category.DEFAULT" /> <category android:name="android.intent.category.BROWSABLE" /> <data android:scheme="file" /> <data android:host="*" /> <!-- Add patterns for extensions your Zidoo browser uses --> <data androidathPattern=".*\\.jpg" /> <data androidathPattern=".*\\.jpeg" /> <data androidathPattern=".*\\.png" /> <data androidathPattern=".*\\.webp" /> <data androidathPattern=".*\\.bmp" /> <data androidathPattern=".*\\.gif" /> <data androidathPattern=".*\\.heic" /> <data androidathPattern=".*\\.heif" /> <data androidathPattern=".*\\.avif" /> </intent-filter> I tested it on my emulator and it does work. I installed ES explorer on Zidoo z30 and that app recognized my Image viewer app when opening an image. Please let me know how to debug this or what is the intent that Zidoo needs. Thank you very much. Caryl