編輯:關於Android編程
android系統的很多信息可以通過 /proc 目錄下獲得,如
cat /proc/cpuinfo 獲取cpu信息
cat /proc/meminfo 獲取內存信息
這些信息以文本格式保存,可以通過IO流讀取,比較簡單,在這裡考慮到一些內容並不是以文本方式保存,磁盤信息
我們通過代碼實現一個linux指令解析器來得到要獲取的信息
指令解析器如下:
public class CMDExecutor { /** * 執行命令 * @param cmd 命令參數 * @param workdir 當前目錄(即執行指令 pwd 看到所在目錄) * @return */ public synchronized String run(String[] cmd, String workdir){ String result = ""; InputStream is = null; try { ProcessBuilder builder = new ProcessBuilder(cmd); if(!TextUtils.isEmpty(workdir)){ builder.directory(new File(workdir)); // 設置執行指令執所在目錄 builder.redirectErrorStream(); Process process = builder.start(); // 執行指令 is = process.getInputStream(); byte[] buf = new byte[1024]; int len = 0; while((len = is.read(buf)) != -1){ result += new String(buf, 0, len); } } } catch (Exception e) { return null; }finally{ if(is != null){ try { is.close(); } catch (IOException e) { e.printStackTrace(); } } } return result; } }
public class GetPhoneInfoUtil { // 獲取內核版本,gcc版本等 public String fetch_version_info(){ String result = null; CMDExecutor cmdexe = new CMDExecutor(); String[] args = {"/system/bin/cat", "/proc/version"}; // "/system/bin/cat" 指令絕對路徑 result = cmdexe.run(args, "system/bin/"); // 已指定指令執行目錄,上面絕對路徑可寫相對路徑 "cat" return result; } // 獲取CPU信息 public String fetch_cpu_info() { String result = null; CMDExecutor cmdexe = new CMDExecutor(); String[] args = { "/system/bin/cat", "/proc/cpuinfo" }; result = cmdexe.run(args, "/system/bin/"); return result; } // 要加輸權限:android.permission.READ_PHONE_STATE // 運營商信息 public String fetch_tel_status(Context context) { String result = null; TelephonyManager tm = (TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE); String str = " "; str += "DeviceId(IMEI) = " + tm.getDeviceId() + "\n"; str += "DeviceSoftwareVersion = " + tm.getDeviceSoftwareVersion() + "\n"; int mcc = context.getResources().getConfiguration().mcc; int mnc = context.getResources().getConfiguration().mnc; str += "IMSI MCC (Mobile Country Code): " + String.valueOf(mcc) + "\n"; str += "IMSI MNC (Mobile Network Code): " + String.valueOf(mnc) + "\n"; result = str; return result; } private static StringBuffer buffer = null; public static String initProperty(String description, String propertyStr) { if (buffer == null) { buffer = new StringBuffer(); } buffer.append(description).append(":\t"); buffer.append(System.getProperty(propertyStr)).append("\n"); return buffer.toString(); } public static String getSystemProperty() { buffer = new StringBuffer(); initProperty("java.vendor.url", "java.vendor.url"); initProperty("java.class.path", "java.class.path"); initProperty("os.name", "os.name"); initProperty("os.version", "os.version"); initProperty("user.home", "user.home"); return buffer.toString(); } // 獲取網絡信息 public static String fetch_netcfg_info(){ String result = null; CMDExecutor cmdexe = new CMDExecutor(); String[] args = { "/system/bin/netcfg" }; result = cmdexe.run(args, "/system/bin/"); return result; } // 磁盤信息 public static String fetch_disk_info() { String result = null; CMDExecutor cmdexe = new CMDExecutor(); String[] args = { "/system/bin/df" }; result = cmdexe.run(args, "/system/bin/"); return result; } // 獲取顯示頻信息 public static String getDisplayMetrics(Context context) { String str = ""; DisplayMetrics dm = new DisplayMetrics(); dm = context.getResources().getDisplayMetrics(); // 上面一行等同於下面兩行 //WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE); //wm.getDefaultDisplay().getMetrics(dm); int screenWidth = dm.widthPixels; int screenHeight = dm.heightPixels; float density = dm.density; float xdpi = dm.xdpi; float ydpi = dm.ydpi; str += "The absolute width: " + String.valueOf(screenWidth) + "pixels \n"; str += "The absolute heightin: " + String.valueOf(screenHeight) + "pixels \n"; str += "The logical density of the display :" + String.valueOf(density) + " \n"; str += "X dimension : " + String.valueOf(xdpi) + "pixels per inch \n"; str += "Y dimension : " + String.valueOf(ydpi) + "pixels per inch \n"; return str; } }
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