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) {
}
}
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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;
}
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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;
}
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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));
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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;
}
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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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