android获取手机cpu并判断是单核还是多核

/** 
* Gets the number of cores available in this device, across all processors. 
* Requires: Ability to peruse the filesystem at "/sys/devices/system/cpu" 
* @return The number of cores, or 1 if failed to get result 
*/ 
private int getNumCores() { 
//Private Class to display only CPU devices in the directory listing 
class CpuFilter implements FileFilter { 
@Override 
public boolean accept(File pathname) { 
//Check if filename is "cpu", followed by a single digit number 
if(Pattern.matches("cpu[0-9]", pathname.getName())) { 
return true; 
} 
return false; 
} 
}

try { 
//Get directory containing CPU info 
File dir = new File("/sys/devices/system/cpu/"); 
//Filter to only list the devices we care about 
File[] files = dir.listFiles(new CpuFilter()); 
//Return the number of cores (virtual CPU devices) 
return files.length; 
} catch(Exception e) { 
//Default to return 1 core 
return 1; 
} 
}

 

Android获取cpu和内存信息、网址的代码，/** 获取用户硬件信息 */

 

 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367

/** 获取用户硬件信息 */ public static String getMobileInfo() {      //StringBuffer sb = new StringBuffer();      JSONObject mbInfo = new JSONObject();               //通过反射获取用户硬件信息      try {               Field[] fields = Build.class.getDeclaredFields();          for (Field field : fields) {              // 暴力反射,获取私有信息              field.setAccessible(true);              String name = field.getName();              String value = field.get(null).toString();              //sb.append(name + "=" + value);              //sb.append("n");              mbInfo.put(name, value);          }      } catch (Exception e) {          e.printStackTrace();      }               //return sb.toString();      return mbInfo.toString();  }            static public String getCpuString(){      if(Build.CPU_ABI.equalsIgnoreCase("x86")){          return "Intel";      }               String strInfo = "";      try     {          byte[] bs = new byte[1024];          RandomAccessFile reader = new RandomAccessFile("/proc/cpuinfo","r");          reader.read(bs);          String ret = new String(bs);          int index = ret.indexOf(0);          if(index != -1) {              strInfo = ret.substring(0, index);          } else {              strInfo = ret;          }      }      catch (IOException ex){          ex.printStackTrace();      }               return strInfo;  }       static public String getCpuType(){      String strInfo = getCpuString();      String strType = null;               if (strInfo.contains("ARMv5")) {          strType = "armv5";      } else if (strInfo.contains("ARMv6")) {          strType = "armv6";      } else if (strInfo.contains("ARMv7")) {          strType = "armv7";      } else if (strInfo.contains("Intel")){          strType = "x86";      }else{          strType = "unknown";          return strType;      }               if (strInfo.contains("neon")) {          strType += "_neon";      }else if (strInfo.contains("vfpv3")) {          strType += "_vfpv3";      }else if (strInfo.contains(" vfp")) {          strType += "_vfp";      }else{          strType += "_none";      }               return strType;  }                 /**  * @hide  * @return  */ public static CPUInfo getCPUInfo() {      String strInfo = null;      try     {          byte[] bs = new byte[1024];          RandomAccessFile reader = new RandomAccessFile("/proc/cpuinfo","r");          reader.read(bs);          String ret = new String(bs);          int index = ret.indexOf(0);          if(index != -1) {              strInfo = ret.substring(0, index);          } else {              strInfo = ret;          }      }      catch (IOException ex)      {          strInfo = "";          ex.printStackTrace();      }               CPUInfo info = parseCPUInfo(strInfo);      info.mCPUMaxFreq = getMaxCpuFreq();                       return info;  }            private final static String kCpuInfoMaxFreqFilePath ="/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq";  private static int getMaxCpuFreq() {      int result = 0;      FileReader fr = null;      BufferedReader br = null;      try {          fr = new FileReader(kCpuInfoMaxFreqFilePath);          br = new BufferedReader(fr);          String text = br.readLine();          if (text != null) {              result = Integer.parseInt(text.trim());          }      } catch (FileNotFoundException e) {          e.printStackTrace();      } catch (IOException e) {          e.printStackTrace();      } finally {          if (fr != null)              try {                  fr.close();              } catch (IOException e) {                  // TODO Auto-generated catch block                  e.printStackTrace();              }          if (br != null)              try {                  br.close();              } catch (IOException e) {                  // TODO Auto-generated catch block                  e.printStackTrace();              }      }           return result;  }           public static class CPUInfo{      public CPUInfo(){                   }               public static final int CPU_TYPE_UNKNOWN            =   0x00000000;      public static final int CPU_TYPE_ARMV5TE            =   0x00000001;      public static final int CPU_TYPE_ARMV6              =   0x00000010;      public static final int CPU_TYPE_ARMV7              =   0x00000100;               public static final int CPU_FEATURE_UNKNOWS         =   0x00000000;      public static final int CPU_FEATURE_VFP             =   0x00000001;      public static final int CPU_FEATURE_VFPV3           =   0x00000010;      public static final int CPU_FEATURE_NEON            =   0x00000100;               public int mCPUType;      public int mCPUCount;      public int mCPUFeature;           public double mBogoMips;      public long mCPUMaxFreq;  }       /**  *   * @param cpuInfo  * @return  * @hide  */ private static CPUInfo parseCPUInfo(String cpuInfo) {      if (cpuInfo == null || "".equals(cpuInfo)) {          return null;      }           CPUInfo ci = new CPUInfo();      ci.mCPUType = CPUInfo.CPU_TYPE_UNKNOWN;      ci.mCPUFeature = CPUInfo.CPU_FEATURE_UNKNOWS;      ci.mCPUCount = 1;      ci.mBogoMips = 0;           if (cpuInfo.contains("ARMv5")) {          ci.mCPUType = CPUInfo.CPU_TYPE_ARMV5TE;      } else if (cpuInfo.contains("ARMv6")) {          ci.mCPUType = CPUInfo.CPU_TYPE_ARMV6;      } else if (cpuInfo.contains("ARMv7")) {          ci.mCPUType = CPUInfo.CPU_TYPE_ARMV7;      }           if (cpuInfo.contains("neon")) {          ci.mCPUFeature |= CPUInfo.CPU_FEATURE_NEON;      }           if (cpuInfo.contains("vfpv3")) {          ci.mCPUFeature |= CPUInfo.CPU_FEATURE_VFPV3;      }           if (cpuInfo.contains(" vfp")) {          ci.mCPUFeature |= CPUInfo.CPU_FEATURE_VFP;      }           String[] items = cpuInfo.split("n");           for (String item : items) {          if (item.contains("CPU variant")) {              int index = item.indexOf(": ");              if (index >= 0) {                  String value = item.substring(index + 2);                  try {                      ci.mCPUCount = Integer.decode(value);                      ci.mCPUCount = ci.mCPUCount == 0 ? 1 : ci.mCPUCount;                  } catch (NumberFormatException e) {                      ci.mCPUCount = 1;                  }              }          } else if (item.contains("BogoMIPS")) {              int index = item.indexOf(": ");              if (index >= 0) {                  String value = item.substring(index + 2);              }          }      }               return ci;  }                 /**  * 获取设备内存大小值  * @return 内存大小,单位MB  */ public static long getTotalMemory() {       String str1 = "/proc/meminfo";      String str2;              String[] arrayOfString;      long initial_memory = 0;      try {          FileReader localFileReader = new FileReader(str1);          BufferedReader localBufferedReader = newBufferedReader(localFileReader, 8192);          str2 = localBufferedReader.readLine();          if (str2 != null) {              arrayOfString = str2.split("\s+");              initial_memory = Integer.valueOf(arrayOfString[1]).intValue()/1024;          }          localBufferedReader.close();          return initial_memory;      }       catch (IOException e)       {                 return -1;      }  }            /**  * @hide  * @return  */ public CPUInfo getCPUInfo() {      String strInfo = null;      try     {          byte[] bs = new byte[1024];          RandomAccessFile reader = new RandomAccessFile("/proc/cpuinfo","r");          reader.read(bs);          String ret = new String(bs);          int index = ret.indexOf(0);          if(index != -1) {              strInfo = ret.substring(0, index);          } else {              strInfo = ret;          }      }      catch (IOException ex)      {          strInfo = "";          ex.printStackTrace();      }               CPUInfo info = parseCPUInfo(strInfo);      info.mCPUMaxFreq = getMaxCpuFreq();                       return info;  }       /**  * 获取android CPU类型  *   * @return String CPU类型  */ public static String getCpuModel(){      String cpu_model = "";           CPUInfo in = getCPUInfo();                     if ((in.mCPUType & CPUInfo.CPU_TYPE_ARMV5TE) == CPUInfo.CPU_TYPE_ARMV5TE)          cpu_model="armv5";      else if ((in.mCPUType & CPUInfo.CPU_TYPE_ARMV6) == CPUInfo.CPU_TYPE_ARMV6)          cpu_model="armv6";      else if ((in.mCPUType & CPUInfo.CPU_TYPE_ARMV7) == CPUInfo.CPU_TYPE_ARMV7)          cpu_model="armv7";      else         cpu_model="unknown";      return cpu_model;  }       /**  * 获取android CPU特性  *   * @return String CPU特性  */ public static String getCpuFeature(){      String cpu_feature = "";                   CPUInfo in = getCPUInfo();                       if ((in.mCPUFeature & CPUInfo.CPU_FEATURE_NEON ) == CPUInfo.CPU_FEATURE_NEON)          cpu_feature="neon";      else if ((in.mCPUFeature & CPUInfo.CPU_FEATURE_VFP ) == CPUInfo.CPU_FEATURE_VFP)          cpu_feature="vfp";      else if ((in.mCPUFeature & CPUInfo.CPU_FEATURE_VFPV3 ) == CPUInfo.CPU_FEATURE_VFPV3)          cpu_feature="vfpv3";      else         cpu_feature="unknown";       return cpu_feature;  }       /**  * 获取ip地址  *   * @param mContext  Context  * @return ip地址字符串  */ public static String getIpAddress(Context mContext) {      String ipAddress = null;      try {          for (Enumeration<NetworkInterface> en = NetworkInterface                  .getNetworkInterfaces(); en.hasMoreElements();) {              NetworkInterface intf = en.nextElement();              for (Enumeration<InetAddress> enumIpAddr = intf                      .getInetAddresses(); enumIpAddr.hasMoreElements();) {                  InetAddress inetAddress = enumIpAddr.nextElement();                  if (!inetAddress.isLoopbackAddress()) {                      ipAddress = inetAddress.getHostAddress().toString();                   }              }          }      } catch (SocketException ex) {          return null;      }      if (DEBUG) {          Log.d(TAG, "ip address:" + ipAddress);      }      return ipAddress;  }