Java code implementation access to Android mobile phone specified app traffic, CPU and memory footprint information __java

Principle: The information about the system performance of the Android phone is written in the file, and is obtained through the Android SDK source life order.

Import Java.io.BufferedReader;
Import Java.io.File;
Import Java.io.FileInputStream;
Import Java.io.InputStreamReader;

Import Java.text.DecimalFormat;
        public class Androidmonitor {private static string PID (String packagename) {Process proc = null;
        String STR3 = null;
            try {Runtime Runtime = Runtime.getruntime ();

            proc = runtime.exec ("adb shell PS |grep" + packagename);
            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 ("" + packagename)-Str1.indExof ("" + PackageName));
            String PID = str2.substring (0, 7);

            PID = Pid.trim ();
        STR3 = PID;
        catch (Exception e) {System.err.println (e);
            Finally {try {Proc.destroy ();
    The catch (Exception E2) {}} return STR3;
        public static double Getflow (String packagename) {double flow = 0;

            try {String pid = pid (PackageName);
            Runtime Runtime = Runtime.getruntime ();
            Process proc = runtime.exec ("adb shell cat/proc/" + Pid + "/net/dev"); 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 ("Wlan0:"), Str1.indexof ("Wlan0:") + 90);
                String STR4 = str2.substring (7, 16);
                STR4 = Str4.trim ();
                String STR6 = str2.substring (67, 75);
                STR6 = Str6.trim ();
                int b = Integer.parseint (STR4);

                int a = Integer.parseint (STR6);
                Double sendflow = a/1024;
                Double revflow = b/1024;

            Flow = Sendflow + Revflow;
            catch (Interruptedexception e) {System.err.println (e);
                Finally {try {Proc.destroy ();
            catch (Exception E2) {}} catch (Exception stringindexoutofboundsexception) { System.Out.println ("Please check whether the device is connected");
    } return flow;
        public static double Getcpu (String packagename) {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)-Str1.indexof (PackageName)). Trim (); String CPU = str3.substring (0, 2);
                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.println ("Please check whether the device is connected");

    } return CPU;

        public static double GetMemory (String packagename) {double Heap = 0;
            try {Runtime Runtime = Runtime.getruntime ();
            Process proc = runtime.exec ("adb shell dumpsys meminfo" + 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 str2 = str1.substring (Str1.indexof ("Objects")-Str1.indexof ("Objects"));
                String STR3 = str2.substring (0, 10);
                STR3 = Str3.trim ();
                Heap = double.parsedouble (STR3)/1024;
                DecimalFormat df = new DecimalFormat ("#.000");
                String memory = Df.format (HEAP);

            Heap = double.parsedouble (memory);
            catch (Interruptedexception e) {System.err.println (e);
                Finally {try {Proc.destroy (); The catch (Exception E2) {}} catch (Exception Stringindexoutofboundsexcepti ON) {System.out.print ("Please check if the device is connected");
    return Heap; }
}

CPU and memory can be directly called this method to obtain, as for the flow, you can add the flow before and after the method, two times to subtract the value of the operation can be consumed by the flow.