“Draw”是指Java层用在创建“display lists”（显示列表）上的时间。它表明运行例如View.onDraw(Canvas)需要多少时间。

“Process”是指Android 2D渲染引擎用在执行“display lists”上的时间。你的UI层级（hierarchy）中的View数量越多，需要执行的绘画命令就越多。

“Execute”是指将一帧图像交给合成器（compositor）的时间。这部分占用的时间通常比较少

  接下来我们要做的就是保存log到txt。

  接着直接更改文件路径直接运行程序即可。可以看到如下的图表

  python代码如下：

  from urllib import urlopen

from reportlab.graphics.shapes import *

from reportlab.graphics.charts.lineplots import LinePlot

from reportlab.graphics.charts.textlabels import Label

from reportlab.graphics import renderPDF

name_infile = file('/Users/apple/Desktop/python/gfxinfo.txt', 'r')

char = []

drawing = Drawing(400,200)

data = []

times = []

for line in name_infile.readlines():

try:

char.append(line)

except IndexError,e:

print 'out of range'

for i in range(len(char)):

if 'Draw' in char[i][1:5]:

Begin_number = i

if 'View' in char[i][0:4]:

End_number = i

for i in range(Begin_number+1,End_number-1):

data.append([float(n) for n in char[i].split()])

print data

for i in range(len(data)):

times.append(i)

print times

Draw = [row[0] for row in data]

Process = [row[1] for row in data]

Execute = [row[2] for row in data]

lp = LinePlot()

lp.x = 50

lp.y = 50

lp.height = 125

lp.width = 300

lp.data = [zip(times, Draw),zip(times,Process),zip(times, Execute)]

lp.lines[0].strokeColor = colors.blue

lp.lines[1].strokeColor = colors.red

lp.lines[2].strokeColor = colors.green

drawing.add(lp)

drawing.add(String(250,150, 'ngxinfo',fontSize=14,fillColor=colors.red))

renderPDF.drawToFile(drawing, 'ngxinfo.pdf','ngxinfo