Xposed module - attempts to disable FLAG_SECURE and SurfaceView Secure system wide. If an app tries to use either of those two methods to prevent screenshots, this Xposed module should allow screenshots.

The class android.view.Window has a method called setFlags which looks like the following:

public void setFlags(int flags, int mask) {
        final WindowManager.LayoutParams attrs = getAttributes();
        attrs.flags = (attrs.flags&~mask) | (flags&mask);
        mForcedWindowFlags |= mask;
        dispatchWindowAttributesChanged(attrs);
    }

If the parameter flags is set to 8192 then the OS sets that specific window to FLAG_SECURE. This Xposed module sets the flag to 0 every time a window tries to set this flag to 8192.

The class android.view.SurfaceView has a method called setSecure which looks like the following:

public void setSecure(boolean isSecure) {
        if (isSecure) {
            mSurfaceFlags |= SurfaceControl.SECURE;
        } else {
            mSurfaceFlags &= ~SurfaceControl.SECURE;
        }
    }

If the parameter isSecure is set to True then the OS sets that specific window to Secure. This Xposed module sets the boolean to Flase every time a window tries to set this boolean to True.