Custom Android Views in Eclipse Visual Editor

Question

In my applications, I often rely on custom build views, such as in the following example.

Answer 1

I'm using Android Studio so I'm not sure this answer will apply to your case.

I think you could override onDraw method in the custom view, like this exemple keeping the aspect ratio of an inner image:

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    // TODO: consider storing these as member variables to reduce
    // allocations per draw cycle.
    int paddingLeft = getPaddingLeft();
    int paddingTop = getPaddingTop();
    int paddingRight = getPaddingRight();
    int paddingBottom = getPaddingBottom();

    int w = getWidth() - paddingLeft - paddingRight;
    int h = getHeight() - paddingTop - paddingBottom;

    w = w

This method runs both in the emulator and the designer.

It runs as well for any event that redraws the view (onSizeChanged, onLayout, etc...)