Removing added views

Solar2D Native builds
#1

The default LuaLoader class from the Android template includes a show() method that creates a webView and adds to the Corona activity, so I’m building my own plugin based on this same approach to get a camera surface view onto the activity. e.g:

public class start implements com.naef.jnlua.NamedJavaFunction { // This reports a class name back to Lua during the initiation phase. @Override public String getName() { return "start"; } // This is what actually gets invoked by the Lua call @Override public int invoke(final LuaState luaState) { if(shared.status != "running") { shared.status = "running"; CoronaActivity activity = CoronaEnvironment.getCoronaActivity(); if (activity == null) { return 0; } activity.runOnUiThread(new Runnable() { @Override public void run() { CoronaActivity activity = CoronaEnvironment.getCoronaActivity(); if (activity == null) { return; } cameraPreview mPreview = new cameraPreview(activity); activity.getOverlayView().addView(mPreview); } }); } return 1; } }

(obviously cameraPreview is another class)

Seems to work perfectly, but I can’t find how to remove the surface again? Or potentially better yet, to clear the OverlayView completely. Any pointers please?

#2

Aha, cracked it.

For anybody else who stumbles on to this, moving mPreview into a shared class:

public class shared { public static cameraPreview mPreview; }

And changing the above to this:

shared.mPreview = new cameraPreview(activity); activity.getOverlayView().addView(shared.mPreview);

Means that you can later kill it again, like this:

activity.getOverlayView().removeView(shared.mPreview);

Simples =).

#3

Aha, cracked it.

For anybody else who stumbles on to this, moving mPreview into a shared class:

public class shared { public static cameraPreview mPreview; }

And changing the above to this:

shared.mPreview = new cameraPreview(activity); activity.getOverlayView().addView(shared.mPreview);

Means that you can later kill it again, like this:

activity.getOverlayView().removeView(shared.mPreview);

Simples =).