android 数据报表

16lz 2021-01-23

引用：http://www.oschina.net/code/snippet_12_1257

[图片]android_xy.gif

android 数据报表

[文件]xy_plot_4_Android_src.zip~57KB下载(127)

[代码]绘制网格线的方法

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`01`	`publicstaticvoiddraw_the_grid(Canvas this_g, Vector these_labels)`

02 {

`03`	`doublerounded_max =0.0;`

`04`	`doublerounded_min =0.0;`

`05`	`doublerounded_max_temp;`

`06`	`Object curElt;`

`07`	`String[] cur_elt_array;`

`08`	`intleft_margin_d, right_margin_d;`

09

`10`	`if( draw_only_this_idx == -1)`

`11`	`curElt = these_labels.elementAt(0);// default it to 1st one if non set`

12 else

`13`	`curElt = these_labels.elementAt(draw_only_this_idx);// now just the 1st elt`

14

`15`	`cur_elt_array = (String[])curElt;`

16

`17`	`rounded_max = get_ceiling_or_floor (Double.parseDouble(cur_elt_array[2]) ,true);`

`18`	`rounded_min = get_ceiling_or_floor (Double.parseDouble(cur_elt_array[3]) ,false);`

19

`20`	`// ok so now we have the max value of the set just get a cool ceiling and we go on`

`21`	`finalPaint paint =newPaint();`

`22`	`paint.setTextSize(15);`

23

`24`	`left_margin_d = getCurTextLengthInPixels(paint, Double.toString(rounded_max));`

`25`	`//keep the position for later drawing -- leave space for the legend`

`26`	`intp_height =170;`

`27`	`intp_width =220;`

`28`	`int[] tmp_draw_sizes = {2+ left_margin_d,25,p_width -2-`

`29`	`left_margin_d ,p_height -25-5};`

`30`	`drawSizes = tmp_draw_sizes;//keep it for later processing`

31

`32`	`//with the mzrgins worked out draw the plotting grid`

`33`	`paint.setStyle(Paint.Style.FILL);`

`34`	`paint.setColor(Color.WHITE );`

35

`36`	`// Android does by coords`

`37`	`this_g.drawRect(drawSizes[0], drawSizes[1],drawSizes[0]+`

`38`	`drawSizes[2], drawSizes[1]+ drawSizes[3] , paint);`

39

`40`	`paint.setColor(Color.GRAY );`

41

`42`	`// finally draw the grid`

43

`44`	`paint.setStyle(Paint.Style.STROKE);`

`45`	`this_g.drawRect(drawSizes[0], drawSizes[1],drawSizes[0]+`

`46`	`drawSizes[2], drawSizes[1]+ drawSizes[3] , paint);`

47

`48`	`for(inti=1; i <5; i++)`

49 {

`50`	`this_g.drawLine(drawSizes[0], drawSizes[1] +`

`51`	`(i * drawSizes[3] /5), drawSizes[0] + drawSizes[2],`

`52`	`drawSizes[1] + (i * drawSizes[3] /5), paint);`

`53`	`this_g.drawLine(drawSizes[0]+ (i * drawSizes[2] /5),`

`54`	`drawSizes[1], drawSizes[0] + (i * drawSizes[2] /5),`

`55`	`drawSizes[1] + drawSizes[3], paint);`

56 }

57

`58`	`// good for one value`

`59`	`print_axis_values_4_grid(this_g, cur_elt_array[1] ,`

`60`	`Double.toString(rounded_max) , Double.toString(rounded_min),`

`61`	`cur_elt_array[0] ,2,0);`

62

`63`	`}// --- end of draw_grid ---`

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