This method works in Android 3 to 15
For Activity this way:
and for B4XPages:
For Activity this way:
B4X:
Sub DisableScreenCapture
Dim r As Reflector
Dim act As Object = r.GetActivity
Dim jo As JavaObject = act
Dim window As JavaObject = jo.RunMethod("getWindow", Null)
window.RunMethod("setFlags", Array(0x00002000, 0x00002000))
End Sub
Sub EnableScreenCapture
Dim r As Reflector
Dim act As Object = r.GetActivity
Dim jo As JavaObject = act
Dim window As JavaObject = jo.RunMethod("getWindow", Null)
window.RunMethod("clearFlags", Array(0x00002000))
End Suband for B4XPages:
B4X:
Sub DisableScreenCapture
Dim act As JavaObject = B4XPages.GetNativeParent(Me)
Dim window As JavaObject = act.RunMethod("getWindow", Null)
window.RunMethod("setFlags", Array(0x00002000, 0x00002000))
End Sub
Sub EnableScreenCapture
Dim act As JavaObject = B4XPages.GetNativeParent(Me)
Dim window As JavaObject = act.RunMethod("getWindow", Null)
window.RunMethod("clearFlags", Array(0x00002000))
End Sub✔ Recommended usage inside a Page
B4X:
Sub B4XPage_Appear
DisableScreenCapture
End Sub
Sub B4XPage_Disappear
EnableScreenCapture
End Sub
- Works in all B4XPages projects
- Protects screenshots, screen recording, and Recents preview
- Tested on real devices, including Xiaomi HyperOS