illegalargumentException

[siddharth shah]

java.lang.IllegalArgumentException: width and height must be > 0
at com.echo.holographlibrary.BarGraph.onDraw(BarGraph.java:80) fullImage = Bitmap.createBitmap(getWidth(), getHeight(), Config.ARGB_8888);

[Daniel Nadeau]

You have most likely specified a negative value, or the layout for the BarGraph is 0 height or width.

[Daniel Nadeau]

Not a problem with library.

[Maciej Donajski]

I have exactly the same issue if BarGraph is inside HorizontallScrollView. Width and height of parent view is for sure > 0 and width and height for BarGraph is:

 android:layout_width="300dp"
 android:layout_height="200dp"

getWidth() in onDraw() returns 0.

[Daniel Nadeau]

Will take a closer look soon. Sorry!

[Maciej Donajski]

I will try to send you some pull request later but just for your consideration I think problem is when

MeasureSpec.UNSPECIFIED

is passed to onMeasure() of View, then no specific width/height is forced by parent and 0 is assigned. In case of unspecified width or height some default (optimal for display) sizes should be passed to setMeasuredDimensions(). Quick solution for width (which is my problem in HorizontalScrollView):

 @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);

        if(widthMeasureSpec == MeasureSpec.UNSPECIFIED) {
            int width = mBars.size() * (int)mContext.getResources().getDisplayMetrics().density * OPT_COL_WIDTH;
            width +=  (mBars.size() - 1) * (int)mContext.getResources().getDisplayMetrics().density * OPT_PADDING_WIDTH;
            setMeasuredDimension(width, getMeasuredHeight());
        }

    }

Hope it will help. Excellent lib BTW :).