解析Android获取系统cpu信息,内存,版本,电量等信息的方法详解
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android获取系统cpu信息，内存，版本，电量等信息 1、cpu频率，cpu信息：/proc/cpuinfo和/proc/stat
通过读取文件/proc/cpuinfo系统cpu的类型等多种信息。
读取/proc/stat 所有cpu活动的信息来计算cpu使用率
下面我们就来讲讲如何通过代码来获取cpu频率：
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 {
// 获取cpu最大频率（单位khz）
// "/system/bin/cat" 命令行
// "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq" 存储最大频率的文件的路径
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();
}
// 获取cpu最小频率（单位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();
}
// 实时获取cpu当前频率（单位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;
}
// 获取cpu名字
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、内存：/proc/meminfo
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大小
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大小
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;//总大小
sdcardinfo[1] = bsize * availblocks;//可用大小
}
return sdcardinfo;
}
5、电池电量
private broadcastreceiver batteryreceiver=new broadcastreceiver(){
@override
public void onreceive(context context, intent intent) {
int level = intent.getintextra("level", 0);
// level加%就是当前电量了
}
};
registerreceiver(batteryreceiver, new intentfilter(intent.action_battery_changed));
6、系统的版本信息
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地址和开机时间
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 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);
}
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