Android 系统信息的获取
2015-05-12 17:56
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Android 系统信息的获取
一、内存（ram）：1、android 的内存大小信息存放在系统的 /proc/meminfo 文件里面，通过adb shell 进入 手机目录后，使用 cat /proc/meminfo 可以显示这些信息：
root@m7:/ # cat /proc/meminfo MemTotal: 1863064 kB MemFree: 109396 kB Buffers: 30892 kB Cached: 835468 kB SwapCached: 0 kB Active: 855868 kB Inactive: 593304 kB Active(anon): 424552 kB Inactive(anon): 162992 kB Active(file): 431316 kB Inactive(file): 430312 kB Unevictable: 2268 kB Mlocked: 0 kB HighTotal: 1458172 kB HighFree: 35356 kB LowTotal: 404892 kB LowFree: 74040 kB SwapTotal: 419428 kB SwapFree: 412148 kB Dirty: 60 kB Writeback: 0 kB AnonPages: 585116 kB Mapped: 272388 kB Shmem: 2460 kB Slab: 52480 kB SReclaimable: 23556 kB SUnreclaim: 28924 kB KernelStack: 14736 kB PageTables: 35532 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 1350960 kB Committed_AS: 82837660 kB VmallocTotal: 409600 kB VmallocUsed: 181572 kB VmallocIoRemap: 172600 kB VmallocAlloc: 8376 kB VmallocMap: 0 kB VmallocUserMap: 0 kB VmallocVpage: 4888 kB VmallocChunk: 69636 kB KGSL_ALLOC: 34340 kB ION_ALLOC: 105376 kB Kmalloc: 8112 kB DMA ALLOC: 352 kB CachedUnmapped: 578420 kB KgslUnmapped: 19528 kB Ftrace: 32768 kB
2、在代码中可以通过读取 /proc/meminfo 文件来获取相应的信息：
public void getTotalRamMemory() {
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、也可以通过 ActivityManager.MemoryInfo 来获取相应的信息：
public long getAvailRamMemory(Context context) {
ActivityManager am = (ActivityManager) context
.getSystemService(Context.ACTIVITY_SERVICE);
ActivityManager.MemoryInfo mi = new ActivityManager.MemoryInfo();
am.getMemoryInfo(mi);
return mi.availMem;
}二、机身容量（Rom大小）
1、android 机身容量，通过adb shell 进入 手机目录后，使用 df 命令可以显示手机挂载分区详细信息：
root@m7:/ # df Filesystem Size Used Free Blksize /dev 909.7M 68.0K 909.6M 4096 /sys/fs/cgroup 909.7M 12.0K 909.7M 4096 /mnt/asec 909.7M 0.0K 909.7M 4096 /mnt/obb 909.7M 0.0K 909.7M 4096 /system 1763.8M 1589.9M 174.0M 4096 /data 26206.2M 3082.8M 23123.4M 4096 /cache 629.9M 10.5M 619.4M 4096 /devlog 19.7M 15.8M 3.9M 4096 /carrier 24.6M 4.0M 20.6M 4096 /firmware/mdm 86.0M 69.1M 16.8M 16384 /data/qcks 20.0M 9.0M 11.0M 4096 /data/efs 20.0M 0.0K 20.0M 4096 /firmware/q6 199.8M 6.4M 193.3M 4096 /data/secure/data 909.7M 0.0K 909.7M 4096 /mnt/shell/emulated 26106.2M 3082.8M 23023.4M 4096 /sqlite_stmt_journals 512.0K 0.0K 512.0K 4096
2、在代码中可以通过 df 命令来显示机身容量，这个方法也适用与获取sdCard的大小：
/**
* get "/data" block available size.
*
* @return available size(kB).
*/
public static long getDataAvailable() {
// exec cmd "df" & get column as: Filesystem Size Used Free Blksize;
// the 3th column of /data is dataFreeSize.
String dataFreeSizeDetailInfo = getDeviceSystemInfo("df", "/data ", 3)
.trim();
// remove the last char of the dataFreeSizeDetailInfo
String dataFreeSizeShotInfo = dataFreeSizeDetailInfo.substring(0,
dataFreeSizeDetailInfo.length() - 1);
float dataFreeSize = Float.parseFloat(dataFreeSizeShotInfo);
float dataFreeKB = dataFreeSize;
if (dataFreeSizeDetailInfo.endsWith("G")// GB to kB
|| dataFreeSizeDetailInfo.endsWith("g")) {
dataFreeKB = dataFreeSize * (1024 * 1024);
} else if (dataFreeSizeDetailInfo.endsWith("M")// MB to kB
|| dataFreeSizeDetailInfo.endsWith("m")) {
dataFreeKB = dataFreeSize * 1024;
} else {// kB to kB
}
return (long) dataFreeKB;
}
/**
* get device system info by executing shell command.
*
* @param cmd
* command to execute by using device shell.
* @param target
* target line or some special line that contain the target
* string ,such as "/data"
* @param column
* ={0,1,2,3,...}
* @return
*/
public static String getDeviceSystemInfo(String cmd, String target,
int column) {
String result = "";
result = RootCmd.execShellCmd(cmd);
String[] strs = result.split("\n");
String info = "-1";
for (String str : strs) {
if (str.startsWith(target) && str.contains(target)) {
Pattern p = Pattern.compile("\\s+");
Matcher m = p.matcher(str);
str = m.replaceAll(" ");
String[] subStr = str.split(" ");
if (subStr.length < column) {
return null;
}
String columnInfo = subStr[column];
info = columnInfo;
}
}
return info;
}3、也可以通过 StatFs 来获取机身容量：
/**
*
* 获得机身内存大小
*
* ＠return
*/
public long getRomTotalSize() {
File path = Environment.getDataDirectory();
StatFs statFs = new StatFs(path.getPath());
long blockSize = statFs.getBlockSizeLong();
long tatalBlocks = statFs.getBlockCountLong();
return blockSize * tatalBlocks;
}
/**
* 获得机身可用内存
*
* ＠return
*/
private long getRomAvailableSize() {
File path = Environment.getDataDirectory();
StatFs statFs = new StatFs(path.getPath());
long blockSize = statFs.getBlockSizeLong();
long availableBlocks = statFs.getAvailableBlocksLong();
return blockSize * availableBlocks;
}三、sdCard大小
/**
*
* 获得sd卡总共容量
*
* ＠return
*/
public long getSDTotalSize() {
/* 获取存储卡路径 */
File sdcardDir = Environment.getExternalStorageDirectory();
/* StatFs 看文件体系空间应用景象 */
StatFs statFs = new StatFs(sdcardDir.getPath());
long blockSize = statFs.getBlockSizeLong();
long totalSize = statFs.getBlockCountLong();
return blockSize * totalSize;
}
/**
*
* 获得sd卡残剩容量，即可以大小
*
* ＠return
*/
public long getSdAvaliableSize() {
File path = Environment.getExternalStorageDirectory();
StatFs statFs = new StatFs(path.getPath());
long blockSize = statFs.getBlockSizeLong();
long availableBlocks = statFs.getAvailableBlocksLong();
return blockSize * availableBlocks;
}四、取得的rom容量和sdcard容量时，常常需要将数据格式化，转换成KB,MB,GB,下面是一个格式化数据的方法： 保留两位小数。
/**
* convert size to KB or MB or GB
*
* @param size
* @return
*/
protected String formatSize(long originSize) {
String suffix = null;
float fSize = 0;
if (originSize >= 1024) {
suffix = "KB";
fSize = originSize / 1024;
if (fSize >= 1024) {
suffix = "MB";
fSize /= 1024;
}
if (fSize >= 1024) {
suffix = "GB";
fSize /= 1024;
}
} else {
fSize = originSize;
}
java.text.DecimalFormat df = new java.text.DecimalFormat("#0.00");
StringBuilder resultBuffer = new StringBuilder(df.format(fSize));
if (suffix != null)
resultBuffer.append(suffix);
return resultBuffer.toString();
}五、CPU信息
1、通过adb shell 进入 手机目录后，使用 cat /proc/cpuinfo 可以显示 CPU 详细信息，/proc/cpuinfo文件中第一行是CPU的型号，第二行是CPU的频率
root@m7:/ # cat /proc/cpuinfo Processor : ARMv7 Processor rev 0 (v7l) processor : 0 BogoMIPS : 13.52 processor : 1 BogoMIPS : 13.52 processor : 2 BogoMIPS : 13.52 processor : 3 BogoMIPS : 13.52 Features : swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls vfpv4 CPU implementer : 0x51 CPU architecture: 7 CPU variant : 0x1 CPU part : 0x06f CPU revision : 0 Hardware : UNKNOWN Revision : 0002 Serial : 0000000000000000
2、在代码中可以通过读取 /proc/cpuinfo 文件来获取CPU相应的信息：
/**
* get CPU info
*
* @return
*/
private String getCPUInfo() {
StringBuffer sb = new StringBuffer();
sb.append("abi: ").append(Build.CPU_ABI).append("\n");
if (new File("/proc/cpuinfo").exists()) {
try {
BufferedReader br = new BufferedReader(new FileReader(new File(
"/proc/cpuinfo")));
String aLine;
while ((aLine = br.readLine()) != null) {
sb.append(aLine + "\n");
}
if (br != null) {
br.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
return sb.toString();
}六、系统的版本信息：
/**
* get system version
*
* @return
*/
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;
}七、MAC地址：
/**
*
* @return
*/
public String getMacInfo(Context context) {
String macInfo;
WifiManager wifiManager = (WifiManager) context
.getSystemService(Context.WIFI_SERVICE);
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
if (wifiInfo.getMacAddress() != null) {
macInfo = wifiInfo.getMacAddress();
} else {
macInfo = "Fail";
}
return macInfo;
}八、电池电量：
/**
* register battery broadcast receiver
*
* @param context
*/
public void registerBatteryReceiver(Context context) {
IntentFilter filter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
context.registerReceiver(batteryReceiver, filter, null, null);
}
/**
* unregister battery broadcast receiver
*
* @param context
*/
public void unregisterBatteryReceiver(Context context) {
context.unregisterReceiver(batteryReceiver);
}
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
System.out.print("Current battery level:" + level);
}
};九、开机时间：
/**
*
* @return
*/
private String getStartTimes(Context context) {
long ut = SystemClock.elapsedRealtime() / 1000;
if (ut == 0) {
ut = 1;
}
int m = (int) ((ut / 60) % 60);
int h = (int) ((ut / 3600));
return h + " hours," + m + " minutes.";
}
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