Android性能测试工具原理

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工具的原理

Cpu取值：

adb shell top -n 1| grep "+PackageName

在代码怎么取呢？看下面

      public static double Cpu(String PackageName) throws IOException {          double Cpu = 0;            try{            Runtime runtime = Runtime.getRuntime();            Process proc = runtime.exec("adb shell top -n 1| grep "+PackageName);            try {                if (proc.waitFor() != 0) {                    System.err.println("exit value = " + proc.exitValue());                }                BufferedReader in = new BufferedReader(new InputStreamReader(                        proc.getInputStream()));                StringBuffer stringBuffer = new StringBuffer();                String line = null;                while ((line = in.readLine()) != null) {                    stringBuffer.append(line+" ");                }            String str1=stringBuffer.toString();              String  str3=str1.substring(str1.indexOf(PackageName)-43,str1.indexOf(PackageName));            //System.out.println(str3);             String cpu= str3.substring(0,4);                    cpu=cpu.trim();                     Cpu=Double.parseDouble(cpu);            } catch (InterruptedException e) {                System.err.println(e);            }finally{                try {                    proc.destroy();                } catch (Exception e2) {                }            }            }            catch (Exception StringIndexOutOfBoundsException)            {                System.out.print("请检查设备是否连接");                }                return Cpu;      }

内存取值：

adb shell dumpsys meminfo "+PackageName

      public static double GetFlow(String PackageName) throws IOException {            double str3=0;            String Pid=PID(PackageName);        try{            Runtime runtime = Runtime.getRuntime();         /*   Process proc2 = runtime.exec("");*/            Process proc = runtime.exec("adb shell cat /proc/"+Pid+"/net/dev");            try {                if (proc.waitFor() != 0) {                    System.err.println("exit value = " + proc.exitValue());                    //JOptionPane.showMessageDialog(new JFrame(), "哥们抱歉，好像出问题了！关掉重试吧！");                }                BufferedReader in = new BufferedReader(new InputStreamReader(                        proc.getInputStream()));                StringBuffer stringBuffer = new StringBuffer();                String line = null;                while ((line = in.readLine()) != null) {                    stringBuffer.append(line+" ");                                  }            String str1=stringBuffer.toString();            String str2=str1.substring(str1.indexOf("wlan0:"),str1.indexOf("wlan0:")+90);           //接收字节：            String str4=str2.substring(7,16);            str4 = str4.trim();            int b=Integer.parseInt(str4);            str3=b/1024;            //System.out.println(str3);            } catch (InterruptedException e) {                System.err.println(e);            }finally{                try {                    proc.destroy();                } catch (Exception e2) {                }            }        }            catch (Exception StringIndexOutOfBoundsException)            {                //System.out.print("请检查设备是否连接");            }               return str3;      }

流量取值：

adb shell cat /proc/Pid/net/dev

  public static double GetFlow(String PackageName) throws IOException {            double str3=0;            String Pid=PID(PackageName);        try{            Runtime runtime = Runtime.getRuntime();         /*   Process proc2 = runtime.exec("");*/            Process proc = runtime.exec("adb shell cat /proc/"+Pid+"/net/dev");            try {                if (proc.waitFor() != 0) {                    System.err.println("exit value = " + proc.exitValue());                    //JOptionPane.showMessageDialog(new JFrame(), "哥们抱歉，好像出问题了！关掉重试吧！");                }                BufferedReader in = new BufferedReader(new InputStreamReader(                        proc.getInputStream()));                StringBuffer stringBuffer = new StringBuffer();                String line = null;                while ((line = in.readLine()) != null) {                    stringBuffer.append(line+" ");                                  }            String str1=stringBuffer.toString();            String str2=str1.substring(str1.indexOf("wlan0:"),str1.indexOf("wlan0:")+90);           //接收字节：            String str4=str2.substring(7,16);            str4 = str4.trim();            int b=Integer.parseInt(str4);            str3=b/1024;            //System.out.println(str3);            } catch (InterruptedException e) {                System.err.println(e);            }finally{                try {                    proc.destroy();                } catch (Exception e2) {                }            }        }            catch (Exception StringIndexOutOfBoundsException)            {                //System.out.print("请检查设备是否连接");            }               return str3;      }

取到流量后可以用步骤后的流量减去步骤前的流量得到步骤消耗流量！也可以用时间差来计算！

电量取值：

adb shell dumpsys battery

这里只是剩余电量！

      public static double battery() throws IOException {            double batt=0;            Runtime runtime = Runtime.getRuntime();            Process proc = runtime.exec("adb shell dumpsys battery");            String str3;            try {                if (proc.waitFor() != 0) {                    System.err.println("exit value = " + proc.exitValue());                }                BufferedReader in = new BufferedReader(new InputStreamReader(                        proc.getInputStream()));                StringBuffer stringBuffer = new StringBuffer();                String line = null;                while ((line = in.readLine()) != null) {                    stringBuffer.append(line+" ");                }            String str1=stringBuffer.toString();            String str2=str1.substring(str1.indexOf("level"),str1.indexOf("level")+10);            str3=str2.substring(6,10);            str3.trim();            batt=Double.parseDouble(str3);            } catch (InterruptedException e) {                System.err.println(e);            }finally{                try {                    proc.destroy();                } catch (Exception e2) {                }            }            return batt;      }

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