Android 平台创建 XY 图表的完整例子，androidxy,public stati

Android 平台创建 XY 图表的完整例子，androidxy,public stati

public static void  draw_the_grid(Canvas this_g,  Vector these_labels)     {                 double rounded_max = 0.0;        double rounded_min = 0.0;        double rounded_max_temp;        Object curElt;          String[] cur_elt_array;        int left_margin_d, right_margin_d;              if( draw_only_this_idx == -1)                 curElt = these_labels.elementAt(0);  // default  it to 1st one if non set         else           curElt = these_labels.elementAt(draw_only_this_idx);  // now just the 1st elt        cur_elt_array = (String[])curElt;        rounded_max = get_ceiling_or_floor (Double.parseDouble(cur_elt_array[2]) , true);        rounded_min = get_ceiling_or_floor (Double.parseDouble(cur_elt_array[3]) , false);       // ok so now we have the max value of the set just get a cool ceiling and we go on        final Paint paint = new Paint();          paint.setTextSize(15);       left_margin_d =  getCurTextLengthInPixels(paint, Double.toString(rounded_max));       //keep the position for later drawing -- leave space for the legend       int p_height = 170;       int p_width = 220;       int[] tmp_draw_sizes = {2 + left_margin_d, 25,p_width - 2 -         left_margin_d ,p_height - 25 -5};       drawSizes = tmp_draw_sizes; //keep it for later processing        //with the mzrgins worked out draw the plotting grid       paint.setStyle(Paint.Style.FILL);        paint.setColor(Color.WHITE );         // Android does by coords       this_g.drawRect(drawSizes[0], drawSizes[1],drawSizes[0]+         drawSizes[2], drawSizes[1]+ drawSizes[3] , paint);       paint.setColor(Color.GRAY );               // finally draw the grid             paint.setStyle(Paint.Style.STROKE);        this_g.drawRect(drawSizes[0], drawSizes[1],drawSizes[0]+         drawSizes[2], drawSizes[1]+ drawSizes[3] , paint);           for(int i=1; i < 5 ; i++)           {               this_g.drawLine(drawSizes[0], drawSizes[1] +         (i * drawSizes[3] / 5), drawSizes[0] + drawSizes[2],         drawSizes[1] + (i * drawSizes[3] / 5), paint);               this_g.drawLine(drawSizes[0]+ (i * drawSizes[2] / 5),         drawSizes[1], drawSizes[0] + (i * drawSizes[2] / 5),         drawSizes[1] + drawSizes[3], paint);           }          // good for one value           print_axis_values_4_grid(this_g, cur_elt_array[1] ,         Double.toString(rounded_max) , Double.toString(rounded_min),         cur_elt_array[0] , 2 ,0 );     }