Getting a gestureoverlayview

Posted by Codejoy on Stack Overflow See other posts from Stack Overflow or by Codejoy
Published on 2010-04-27T20:48:17Z Indexed on 2012/09/30 3:38 UTC
Read the original article Hit count: 221

Filed under:
|
|

I have been using some nice tutorials on drawing graphics on my android. I wanted to also add in the cool gesture demo found here:

http://developer.android.com/resources/articles/gestures.html

That takes these lines of code:

GestureOverlayView gestures = (GestureOverlayView) findViewById(R.id.gestures);
gestures.addOnGesturePerformedListener(this); 

This is fine and dandy yet I realize in my demo i'm trying to build using code from "Playing with Graphics in Android". The demos make sense, everything makes sense but I found out by using:

setContentView(new Panel(this));

as is required by the Playing With Graphics tutorials, then the findViewById seems to no longer be valid and returns null. At first I was about to post a stupider question as to why this is happening, a quick test of playing with the setContentView made me realize the cause of findViewById returning null, I just do not know how to remedy this issue. Whats the key I am missing here? I realize that the new Panel is doinking some reference up but I am not sure how to make the connection here.

The: R.id.gestures is defined right int he main.xml as: (just like the tutorial)

<android.gesture.GestureOverlayView
    android:id="@+id/gestures"
    android:layout_width="fill_parent" 
    android:layout_height="0dip"
    android:layout_weight="1.0" />

So I did confirm the

setContentView(new Panel(this))

is causing the issue. So I know the issue is that I have to figure out how to add the android.gesture.GestureOverlayView to the panel class somehow, I am just not sure how to go about this.

After fighting with this I generally know what I need to do just now how to do it. I think I need either the equivalent of creating a panel in that main.xml OR figuring out how to build whats in main.xml for the gestures in code. I am close because I did this: GestureOverlayView gestures = new GestureOverlayView(this);

which gets me a non null gestures now, unfortunately since I am not telling it to fill Parent anywhere I don't think its really showing up, so I am trying hard to figure out layout pa rams. Am I even on the right track?

© Stack Overflow or respective owner

Related posts about android

Related posts about graphics