Android access to system CPU information, memory, version, power and other information 1, CPU frequency, CPU information:/proc/cpuinfo and/proc/stat
By reading the file/proc/cpuinfo the system CPU type and so on a variety of information.
Read information/proc/stat all CPU activity to calculate CPU usage
Let's talk about how to get CPU frequency through code:
Copy Code code as follows:
Package com.orange.cpu;
Import Java.io.BufferedReader;
Import java.io.FileNotFoundException;
Import Java.io.FileReader;
Import java.io.IOException;
Import Java.io.InputStream;
public class Cpumanager {
Get CPU Maximum frequency (unit khz)
The "/system/bin/cat" command line
"/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq" The path to the file that stores the maximum frequency
public static String Getmaxcpufreq () {
String result = "";
Processbuilder cmd;
try {
string[] args = {"/system/bin/cat",
"/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq"};
cmd = new Processbuilder (args);
Process process = Cmd.start ();
InputStream in = Process.getinputstream ();
byte[] re = new byte[24];
while (In.read (re)!=-1) {
result = result + new String (re);
}
In.close ();
catch (IOException ex) {
Ex.printstacktrace ();
result = "N/a";
}
return Result.trim ();
}
Get CPU minimum frequency (unit khz)
public static String Getmincpufreq () {
String result = "";
Processbuilder cmd;
try {
string[] args = {"/system/bin/cat",
"/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq"};
cmd = new Processbuilder (args);
Process process = Cmd.start ();
InputStream in = Process.getinputstream ();
byte[] re = new byte[24];
while (In.read (re)!=-1) {
result = result + new String (re);
}
In.close ();
catch (IOException ex) {
Ex.printstacktrace ();
result = "N/a";
}
return Result.trim ();
}
Get CPU current frequency in real time (unit khz)
public static String Getcurcpufreq () {
String result = "N/a";
try {
FileReader FR = new FileReader (
"/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq");
BufferedReader br = new BufferedReader (FR);
String text = Br.readline ();
result = Text.trim ();
catch (FileNotFoundException e) {
E.printstacktrace ();
catch (IOException e) {
E.printstacktrace ();
}
return result;
}
Get CPU Name
public static String Getcpuname () {
try {
FileReader FR = new FileReader ("/proc/cpuinfo");
BufferedReader br = new BufferedReader (FR);
String text = Br.readline ();
string[] Array = Text.split (": \\s+", 2);
for (int i = 0; i < Array.Length; i++) {
}
return array[1];
catch (FileNotFoundException e) {
E.printstacktrace ();
catch (IOException e) {
E.printstacktrace ();
}
return null;
}
}
2, Memory:/proc/meminfo
Copy Code code as follows:
public void Gettotalmemory () {
String str1 = "/proc/meminfo";
String str2= "";
try {
FileReader FR = new FileReader (STR1);
BufferedReader localbufferedreader = new BufferedReader (FR, 8192);
while ((str2 = Localbufferedreader.readline ())!= null) {
LOG.I (TAG, "---" + str2);
}
catch (IOException e) {
}
}
3, ROM size
Copy Code code as follows:
Public long[] Getrommemroy () {
long[] Rominfo = new long[2];
Total ROM Memory
Rominfo[0] = Gettotalinternalmemorysize ();
Available ROM Memory
File path = Environment.getdatadirectory ();
Statfs stat = new Statfs (Path.getpath ());
Long blockSize = Stat.getblocksize ();
Long availableblocks = Stat.getavailableblocks ();
ROMINFO[1] = blockSize * availableblocks;
GetVersion ();
return rominfo;
}
Public long gettotalinternalmemorysize () {
File path = Environment.getdatadirectory ();
Statfs stat = new Statfs (Path.getpath ());
Long blockSize = Stat.getblocksize ();
Long totalblocks = Stat.getblockcount ();
return totalblocks * blockSize;
}
4, SDcard size
Copy Code code as follows:
Public long[] Getsdcardmemory () {
Long[] Sdcardinfo=new long[2];
String state = Environment.getexternalstoragestate ();
if (Environment.MEDIA_MOUNTED.equals (state)) {
File Sdcarddir = Environment.getexternalstoragedirectory ();
Statfs SF = new Statfs (Sdcarddir.getpath ());
Long bsize = Sf.getblocksize ();
Long Bcount = Sf.getblockcount ();
Long availblocks = Sf.getavailableblocks ();
SDCARDINFO[0] = bsize * bcount;//Total size
SDCARDINFO[1] = bsize * availblocks;//Available size
}
return sdcardinfo;
}
5. Battery charge
Copy Code code as follows:
Private Broadcastreceiver batteryreceiver=new Broadcastreceiver () {
@Override
public void OnReceive (context context, Intent Intent) {
int level = Intent.getintextra ("level", 0);
Level plus% is the current charge.
}
};
Registerreceiver (Batteryreceiver, New Intentfilter (intent.action_battery_changed));
6, the system version information
Copy Code code as follows:
Public string[] GetVersion () {
string[] version={"null", "null", "null", "null"};
String str1 = "/proc/version";
String str2;
String[] arrayofstring;
try {
FileReader Localfilereader = new FileReader (STR1);
BufferedReader localbufferedreader = new BufferedReader (
Localfilereader, 8192);
STR2 = Localbufferedreader.readline ();
arrayofstring = Str2.split ("\\s+");
Version[0]=arrayofstring[2];//kernelversion
Localbufferedreader.close ();
catch (IOException e) {
}
VERSION[1] = build.version.release;//firmware VERSION
Version[2]=build.model;//model
Version[3]=build.display;//system version
return version;
}
7, MAC address and boot time
Copy Code code as follows:
Public string[] Getotherinfo () {
string[] other={"null", "null"};
Wifimanager Wifimanager = (wifimanager) mcontext.getsystemservice (Context.wifi_service);
Wifiinfo wifiinfo = Wifimanager.getconnectioninfo ();
if (wifiinfo.getmacaddress ()!=null) {
Other[0]=wifiinfo.getmacaddress ();
} else {
Other[0] = "Fail";
}
OTHER[1] = Gettimes ();
return to other;
}
Private String Gettimes () {
Long ut = systemclock.elapsedrealtime ()/1000;
if (ut = = 0) {
UT = 1;
}
int m = (int) ((UT/60)% 60);
int h = (int) ((ut/3600));
Return H + "" + mcontext.getstring (r.string.info_times_hour) + M + ""
+ mcontext.getstring (r.string.info_times_minute);
}
