Apps Using GraphView from Java Class to set up in xml

[DIONYZUZ]

I searched through the objects in the xml and I was thinking it might be the surface view editor, but it is confusing. The java class uses a canvas to draw data on a graph. I want to have this working in a app I am using that will graph realtime data over time. Any advice or help will greatly be appreciated. Here's the code:

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.Align;
import android.view.View;

/**
* GraphView creates a scaled line or bar graph with x and y axis labels.
*
*
*/
public class GraphView extends View {

public static boolean BAR = true;
public static boolean LINE = false;

private Paint paint;
private float[] values;
private String[] horlabels;
private String[] verlabels;
private String title;
private boolean type;

public GraphView(Context context, float[] values, String title, String[] horlabels, String[] verlabels, boolean type) {
super(context);
if (values == null)
values = new float[0];
else
this.values = values;
if (title == null)
title = "";
else
this.title = title;
if (horlabels == null)
this.horlabels = new String[0];
else
this.horlabels = horlabels;
if (verlabels == null)
this.verlabels = new String[0];
else
this.verlabels = verlabels;
this.type = type;
paint = new Paint();
}

@Override
protected void onDraw(Canvas canvas) {
float border = 20;
float horstart = border * 2;
float height = getHeight();
float width = getWidth() - 1;
float max = getMax();
float min = getMin();
float diff = max - min;
float graphheight = height - (2 * border);
float graphwidth = width - (2 * border);

paint.setTextAlign(Align.LEFT);
int vers = verlabels.length - 1;
for (int i = 0; i < verlabels.length; i++) {
paint.setColor(Color.DKGRAY);
float y = ((graphheight / vers) * i) + border;
canvas.drawLine(horstart, y, width, y, paint);
paint.setColor(Color.WHITE);
canvas.drawText(verlabels, 0, y, paint);
}
int hors = horlabels.length - 1;
for (int i = 0; i < horlabels.length; i++) {
paint.setColor(Color.DKGRAY);
float x = ((graphwidth / hors) * i) + horstart;
canvas.drawLine(x, height - border, x, border, paint);
paint.setTextAlign(Align.CENTER);
if (i==horlabels.length-1)
paint.setTextAlign(Align.RIGHT);
if (i==0)
paint.setTextAlign(Align.LEFT);
paint.setColor(Color.WHITE);
canvas.drawText(horlabels, x, height - 4, paint);
}

paint.setTextAlign(Align.CENTER);
canvas.drawText(title, (graphwidth / 2) + horstart, border - 4, paint);

if (max != min) {
paint.setColor(Color.LTGRAY);
if (type == BAR) {
float datalength = values.length;
float colwidth = (width - (2 * border)) / datalength;
for (int i = 0; i < values.length; i++) {
float val = values - min;
float rat = val / diff;
float h = graphheight * rat;
canvas.drawRect((i * colwidth) + horstart, (border - h) + graphheight, ((i * colwidth) + horstart) + (colwidth - 1), height - (border - 1), paint);
}
} else {
float datalength = values.length;
float colwidth = (width - (2 * border)) / datalength;
float halfcol = colwidth / 2;
float lasth = 0;
for (int i = 0; i < values.length; i++) {
float val = values - min;
float rat = val / diff;
float h = graphheight * rat;
if (i > 0)
canvas.drawLine(((i - 1) * colwidth) + (horstart + 1) + halfcol, (border - lasth) + graphheight, (i * colwidth) + (horstart + 1) + halfcol, (border - h) + graphheight, paint);
lasth = h;
}
}
}
}

private float getMax() {
float largest = Integer.MIN_VALUE;
for (int i = 0; i < values.length; i++)
if (values > largest)
largest = values;
return largest;
}

private float getMin() {
float smallest = Integer.MAX_VALUE;
for (int i = 0; i < values.length; i++)
if (values < smallest)
smallest = values;
return smallest;
}

}

 

[DIONYZUZ]

Nevermind, I found it out. I don't even need to use the xml to view it. Anyways it would still be nice to know