I know this question was asked earlier once but I see no answer to it from back then. Hence if you someone can guide me in this regard, I would grateful.
Android need help with diagram
I have an error in the below part:
double x = 0;
double y = 0;
for (int i=0;i<10;i++)
{
x=x+10;
y=y+5;
mCurrentSeries.add(x, y);
}
Log.i("Series Count",""+mCurrentSeries.getItemCount());
for (int xy=0;xy<10;xy++)
{
Log.i("Series -- Values","["+mCurrentSeries.getX(xy)+","+mCurrentSeries.getY(xy)+"]");
}
if (mChartView != null) {
mChartView.repaint();
}
Bitmap bitmap = mChartView.toBitmap();
try {
File file = new File(Environment.getExternalStorageDirectory(),
"test" + index++ + ".png");
OutputStream output = new FileOutputStream(file);
bitmap.compress(CompressFormat.PNG, 100, output);
output.flush();
output.close();
} catch (Exception e) {
Toast.makeText(LineChartTestActivity.this, "Graph Exception", Toast.LENGTH_LONG).show();//Added Toast to see exception on device
Log.e("ERROR", "BITMAP EXCEPTION");
e.printStackTrace();
}
To be specific the below line gives me a java.lang.NullPointerException
bitmap.compress(CompressFormat.PNG, 100, output);
Like Handy mentioned in his question, I'm also able to make it work using the editText but for some odd reason it will not work when I give explicit values from the code!
Please advise.
