android 工具类

Android的获取外部存储设备。

   / / 1。这个是获取安卓内置的SD卡    。Environment.getExternalStorageDirectory（）getAbsolutePath（）;    <pre name="code" class="java">String[] paths =null;StorageManager sm = (StorageManager) this.getSystemService(Context.STORAGE_SERVICE);// 获取sdcard的路径：外置和内置try { paths = (String[]) sm.getClass().getMethod("getVolumePaths", null).invoke(sm, null);} catch (IllegalArgumentException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IllegalAccessException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (InvocationTargetException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (NoSuchMethodException e) {// TODO Auto-generated catch blocke.printStackTrace();}//getPath2(); Toast.makeText(this, paths[0] +"======"+ paths[1]+ "===="+ paths.length , Toast.LENGTH_LONG).show();

获取SD卡上的图片的缩略图和视频的缩略图

/ **  *根据指定的图像路径​​和大小来获取缩略图  * 1。使用较小的内存空间，第一次获取的bitmap实际上为null，只是为了读取宽度和高度，  *第二次读取的bitmap是根据比例压缩过的图像，第三次读取的bitmap是所要的缩略图。  * 2。缩略图对于原图像来讲没有拉伸，这里使用了2.2版本的新工具ThumbnailUtils，使  *用这个工具生成的图像不会被拉伸。  * @参数IMAGEPATH图像的路径  * @参数宽度指定输出图像的宽度  * @参数高度指定输出图像的高度  * @返回生成的缩略图  * / 私人点阵图getImageThumbnail（IMAGEPATH字符串，整型宽度，高度诠释）{  位图位图= NULL;  BitmapFactory.Options选项=新BitmapFactory.Options（）;  options.inJustDecodeBounds = TRUE;  / /获取这个图片的宽和高，注意此处的点阵图为空  位图= BitmapFactory.decodeFile（IMAGEPATH，期权）;  options.inJustDecodeBounds = FALSE; / /设为假  / /计算缩放比  整型H = options.outHeight;  整型W = options.outWidth;  整型beWidth = W /宽度;  整型beHeight = H /高度;  整型是= 1;  如果（beWidth <beHeight）{   是= beWidth;  }其他{   是= beHeight;  }  如果（被<= 0）{   是= 1;  }  options.inSampleSize =是;  / /重新读入图片，读取缩放后的位图，注意这次要把options.inJustDecodeBounds设为假  位图= BitmapFactory.decodeFile（IMAGEPATH，期权）;  / /利用ThumbnailUtils来创建缩略图，这里要指定要缩放哪个位图对象/ /位图= ThumbnailUtils.extractThumbnail（位图，宽度，高度，/ / ThumbnailUtils.OPTIONS_RECYCLE_INPUT）;  返回位图; } / **  *获取视频的缩略图  *先通过ThumbnailUtils来创建一个视频的缩略图，然后再利用ThumbnailUtils来生成指定大小的缩略图。  *如果想要的缩略图的宽和高都小于MICRO_KIND，则类型要使用MICRO_KIND作为kind的值，  * @参数videoPath视频的路径  * @参数宽度指定输出视频缩略图的宽度  * @参数高度指定输出视频缩略图的高度度  * @参数类型的参照MediaStore.Images.Thumbnails类中的常量MINI_KIND和MICRO_KIND。  *其中，MINI_KIND：512×384，MICRO_KIND：96×96  * @返回指定大小的视频缩略图  * / 私人点阵图getVideoThumbnail（字符串videoPath，诠释宽度，高度诠释，   整型的那种）{  位图位图= NULL;  / /获取视频的缩略图    尝试{      位图= ThumbnailUtils.createVideoThumbnail（videoPath，实物）;    。Toast.makeText（这一点，“W =”+ bitmap.getWidth（）+“ -  H =”+ bitmap.getHeight（），Toast.LENGTH_SHORT）的show（）;  位图= ThumbnailUtils.extractThumbnail（位图，宽度，高度，                                   ThumbnailUtils.OPTIONS_RECYCLE_INPUT）;    }赶上（例外五）{。Toast.makeText（这一点，“异常=”+ e.toString（），Toast.LENGTH_SHORT）的show（）;}    返回位图; } 

获取手机的IP地址

 / **获取本地的IP经过修改的只获取IPv4的** /    公共静态字符串getMyLocalIpAddress（）{             尝试{                 对于（枚举<NetworkInterface> EN =的NetworkInterface                                 。getNetworkInterfaces（）; en.hasMoreElements（）;} {                             的NetworkInterface INTF = en.nextElement（）;                        对于（枚举<InetAddress> enumIpAddr = intf.getInetAddresses（）;                                                           enumIpAddr.hasMoreElements（）;} {                             InetAddress类InetAddress类= enumIpAddr.nextElement（）;                             如果（！inetAddress.isLoopbackAddress（）&&！inetAddress.isLinkLocalAddress（））{                             返回inetAddress.getHostAddress（）的toString（）;                             }                        }                      }               }赶上（例外）{                         Log.e（“WifiPreference Ip地址”，ex.toString（））;               }              返回null;        }    / **获取手机的IP 3G WIFI可以NetworkInterface.getHardwareAddress（）没修改的获取到的是的IPv6的地址在4.0上* /   公共静态字符串getLocalIpAddress（）{     尝试{      对于（枚举<NetworkInterface> EN = NetworkInterface.getNetworkInterfaces（）; en.hasMoreElements（）;} {              的NetworkInterface INTF = en.nextElement（）;              对于（枚举<InetAddress> enumIpAddr = intf.getInetAddresses（）; enumIpAddr.hasMoreElements（）;} {                  InetAddress类InetAddress类= enumIpAddr.nextElement（）;                  如果（！inetAddress.isLoopbackAddress（））{                      返回inetAddress.getHostAddress（）的toString（）;                  }              }          }      }赶上（例外）{          Log.e（“AAAA”，ex.toString（））;      }      返回null;  }           / **通过无线网络获取IP IPv6的* /   公共静态字符串GetIpAddress是（上下文CTX）{            WifiManager wifi_service =（WifiManager）ctx.getSystemService（Context.WIFI_SERVICE）;         DhcpInfo dhcpInfo = wifi_service.getDhcpInfo（）;         WifiInfo wifiinfo = wifi_service.getConnectionInfo（）;         System.out.println（“无线信息----->”+ wifiinfo.getIpAddress（））;         System.out.println（“DHCP信息门户----->”+ Formatter.formatIpAddress（dhcpInfo.gateway））;         System.out.println（“DHCP信息网络掩码----->”+ Formatter.formatIpAddress（dhcpInfo.netmask））;         / / DhcpInfo中的ip地址是一个整数型的变量，通过格式化程序将其转化为字符串的IP地址         返回Formatter.formatIpAddress（dhcpInfo.ipAddress）;     }           / **根据无线信息获取本地的Mac必须打开无线网络的IPv6 ** /    公共静态字符串getLocalMacAddressFromWifiInfo（上下文上下文）{        WifiManager无线=（WifiManager）context.getSystemService（Context.WIFI_SERVICE）;          WifiInfo信息= wifi.getConnectionInfo（）;          返回info.getMacAddress（）;     }/ ** *获取程序的网络环境 * /公共静态布尔getNetWorkStatus（上下文上下文）{布尔B =真;    ConnectivityManager connManager =（ConnectivityManager）context.getSystemService（Context.CONNECTIVITY_SERVICE）;    的NetworkInfo的wifi = connManager.getNetworkInfo（ConnectivityManager.TYPE_WIFI）;    的NetworkInfo移动= connManager.getNetworkInfo（ConnectivityManager.TYPE_MOBILE）;      如果（！wifi.isConnectedOrConnecting（）&&！mobile.isConnectedOrConnecting（））{    B = FALSE;    }    返回b;}

贴2张IPV64的图

      

获取手机的相关信息

StringBuilder phoneInfo = new StringBuilder();          phoneInfo.append("Product: " + android.os.Build.PRODUCT + System.getProperty("line.separator"));          phoneInfo.append( "CPU_ABI: " + android.os.Build.CPU_ABI + System.getProperty("line.separator"));          phoneInfo.append( "TAGS: " + android.os.Build.TAGS + System.getProperty("line.separator"));          phoneInfo.append( "VERSION_CODES.BASE: " + android.os.Build.VERSION_CODES.BASE + System.getProperty("line.separator"));          phoneInfo.append( "MODEL: " + android.os.Build.MODEL + System.getProperty("line.separator"));          phoneInfo.append( "SDK: " + android.os.Build.VERSION.SDK + System.getProperty("line.separator"));          phoneInfo.append( "VERSION.RELEASE: " + android.os.Build.VERSION.RELEASE + System.getProperty("line.separator"));          phoneInfo.append( "DEVICE: " + android.os.Build.DEVICE + System.getProperty("line.separator"));          phoneInfo.append( "DISPLAY: " + android.os.Build.DISPLAY + System.getProperty("line.separator"));          phoneInfo.append( "BRAND: " + android.os.Build.BRAND + System.getProperty("line.separator"));          phoneInfo.append( "BOARD: " + android.os.Build.BOARD + System.getProperty("line.separator"));          phoneInfo.append( "FINGERPRINT: " + android.os.Build.FINGERPRINT + System.getProperty("line.separator"));          phoneInfo.append( "ID: " + android.os.Build.ID + System.getProperty("line.separator"));          phoneInfo.append( "MANUFACTURER: " + android.os.Build.MANUFACTURER + System.getProperty("line.separator"));          phoneInfo.append( "USER: " + android.os.Build.USER + System.getProperty("line.separator"));                           TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);                           phoneInfo.append("DeviceId(IMEI) = " + tm.getDeviceId() + System.getProperty("line.separator"));            phoneInfo.append("DeviceSoftwareVersion = " + tm.getDeviceSoftwareVersion() + System.getProperty("line.separator"));            phoneInfo.append("Line1Number = " + tm.getLine1Number() + System.getProperty("line.separator"));            phoneInfo.append("NetworkCountryIso = " + tm.getNetworkCountryIso() + System.getProperty("line.separator"));            phoneInfo.append("NetworkOperator = " + tm.getNetworkOperator() + System.getProperty("line.separator"));            phoneInfo.append("NetworkOperatorName = " + tm.getNetworkOperatorName() + System.getProperty("line.separator"));            phoneInfo.append("NetworkType = " + tm.getNetworkType() + System.getProperty("line.separator"));            phoneInfo.append("PhoneType = " + tm.getPhoneType() + System.getProperty("line.separator"));            phoneInfo.append("SimCountryIso = " + tm.getSimCountryIso() + System.getProperty("line.separator"));            phoneInfo.append("SimOperator = " + tm.getSimOperator() + System.getProperty("line.separator"));            phoneInfo.append("SimOperatorName = " + tm.getSimOperatorName() + System.getProperty("line.separator"));            phoneInfo.append("SimSerialNumber = " + tm.getSimSerialNumber() + System.getProperty("line.separator"));            phoneInfo.append("SimState = " + tm.getSimState() + System.getProperty("line.separator"));            phoneInfo.append("SubscriberId(IMSI) = " + tm.getSubscriberId() + System.getProperty("line.separator"));            phoneInfo.append("VoiceMailNumber = " + tm.getVoiceMailNumber() + System.getProperty("line.separator"));

附上2张图

     

经纬度方面的转换

public class ConvertLatlng {// 经纬度度分秒转换为小数public static double convertToDecimal(double du, double fen, double miao) {if (du < 0)return -(Math.abs(du) + (Math.abs(fen) + (Math.abs(miao) / 60)) / 60);return Math.abs(du) + (Math.abs(fen) + (Math.abs(miao) / 60)) / 60;}public static double convertTodecimal(String sdu, String sfen, String smiao) {double du = Double.parseDouble(sdu);double fen = Double.parseDouble(sfen);double miao = Double.parseDouble(smiao);if (du < 0)return -(Math.abs(du) + (Math.abs(fen) + (Math.abs(miao) / 60)) / 60);return Math.abs(du) + (Math.abs(fen) + (Math.abs(miao) / 60)) / 60;}// 以字符串形式输入经纬度的转换public static double convertToDecimalByString(String latlng) {double du = 0;double fen = 0;double miao = 0;if (latlng.indexOf("°") != -1) {du = Double.parseDouble(latlng.substring(0, latlng.indexOf("°")));if (latlng.indexOf("′") != -1) {fen = Double.parseDouble(latlng.substring(latlng.indexOf("°") + 1, latlng.indexOf("′")));if (latlng.indexOf("″") != -1) {miao = Double.parseDouble(latlng.substring(latlng.indexOf("′") + 1, latlng.indexOf("″")));}}}if (du < 0)return -(Math.abs(du) + (fen + (miao / 60)) / 60);return du + (fen + (miao / 60)) / 60;}// 将小数转换为度分秒public static String convertToSexagesimal(double num) {int du = (int) Math.floor(Math.abs(num)); // 获取整数部分double temp = getdPoint(Math.abs(num)) * 60;int fen = (int) Math.floor(temp); // 获取整数部分double miao = getdPoint(temp) * 60;if (num < 0)return "-" + du + "°" + fen + "′" + miao + "″";return du + "°" + fen + "′" + miao + "″";}// 获取小数部分public static double getdPoint(double num) {double d = num;int fInt = (int) d;BigDecimal b1 = new BigDecimal(Double.toString(d));BigDecimal b2 = new BigDecimal(Integer.toString(fInt));double dPoint = b1.subtract(b2).floatValue();return dPoint;}//public void test1() {double convertTodecimal = convertTodecimal("123", "19", "15");System.out.println(convertTodecimal);}}

获取状态栏的高度

//获取状态栏的高度1Rect frame = new Rect();getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);int statusBarHeight = frame.top;//2.转自别人的，有些手机必须要用下面的方法才能获取到public static int getStatusBarHeight(Context context){        Class<?> c = null;        Object obj = null;        Field field = null;        int x = 0, statusBarHeight = 0;        try {            c = Class.forName("com.android.internal.R$dimen");            obj = c.newInstance();            field = c.getField("status_bar_height");            x = Integer.parseInt(field.get(obj).toString());            statusBarHeight = context.getResources().getDimensionPixelSize(x);             Log.v("@@@@@@", "the status bar height is : " + statusBarHeight);        } catch (Exception e1) {            e1.printStackTrace();        }         return statusBarHeight;    }

判断输入的文本 是否有中文字符

private static final boolean isChinese(char c) {    Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);    if (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS            || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION            || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS) {        return true;    }    return false;}public static final boolean isChinese(String strName) {    char[] ch = strName.toCharArray();    for (int i = 0; i < ch.length; i++) {        char c = ch[i];        if (isChinese(c)) {            return true;        }    }    return false;}

查看手机磁盘空间

  public static long isEnough(){            StatFs statFs = new StatFs(Environment.getExternalStorageDirectory()             .getAbsolutePath());              //sd卡分区数         int blockCounts = statFs.getBlockCount();              Log.e("ray", "blockCounts" + blockCounts);              //sd卡可用分区数         int avCounts = statFs.getAvailableBlocks();              Log.e("ray", "avCounts" + avCounts);              //一个分区数的大小         long blockSize = statFs.getBlockSize();              Log.e("ray", "blockSize" + blockSize);              //sd卡可用空间         long spaceLeft = avCounts * blockSize;              Log.e("ray", "spaceLeft" + spaceLeft);                       System.out.println("=spaceLeft"+ spaceLeft);                     return spaceLeft;          }  

默认方法执行日志类，

public final class LogHelper {     private static boolean mIsDebugMode = true;//获取堆栈信息会影响性能，发布应用时记得关闭DebugMode     private static String mLogTag = "LogHelper";      private static final String CLASS_METHOD_LINE_FORMAT = "%s.%s()  Line:%d  (%s)";      public static void trace() {         if (mIsDebugMode) {             StackTraceElement traceElement = Thread.currentThread()                     .getStackTrace()[3];//从堆栈信息中获取当前被调用的方法信息             String logText = String.format(CLASS_METHOD_LINE_FORMAT,                     traceElement.getClassName(), traceElement.getMethodName(),                     traceElement.getLineNumber(), traceElement.getFileName());             Log.d(mLogTag, logText);//打印Log         }     } } 

系统异常捕捉

/**    * UncaughtException处理类,当程序发生Uncaught异常的时候,有该类来接管程序,并记录发送错误报告.   *   *  需要在Application中注册，为了要在程序启动器就监控整个程序。  */      public class CrashHandler implements UncaughtExceptionHandler {                    public static final String TAG = "CrashHandler";                    //系统默认的UncaughtException处理类           private Thread.UncaughtExceptionHandler mDefaultHandler;          //CrashHandler实例          private static CrashHandler instance;     //程序的Context对象          private Context mContext;          //用来存储设备信息和异常信息          private Map<String, String> infos = new HashMap<String, String>();                //用于格式化日期,作为日志文件名的一部分          private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");                /** 保证只有一个CrashHandler实例 */          private CrashHandler() {}                /** 获取CrashHandler实例 ,单例模式 */          public static CrashHandler getInstance() {              if(instance == null)              instance = new CrashHandler();             return instance;          }                /**        * 初始化        */          public void init(Context context) {              mContext = context;              //获取系统默认的UncaughtException处理器              mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();              //设置该CrashHandler为程序的默认处理器              Thread.setDefaultUncaughtExceptionHandler(this);          }                /**        * 当UncaughtException发生时会转入该函数来处理        */          @Override          public void uncaughtException(Thread thread, Throwable ex) {              if (!handleException(ex) && mDefaultHandler != null) {                  //如果用户没有处理则让系统默认的异常处理器来处理                  mDefaultHandler.uncaughtException(thread, ex);              } else {                  try {                      Thread.sleep(3000);                  } catch (InterruptedException e) {                      Log.e(TAG, "error : ", e);                  }                  //退出程序                  android.os.Process.killProcess(android.os.Process.myPid());                  System.exit(1);              }          }                /**        * 自定义错误处理,收集错误信息 发送错误报告等操作均在此完成.        *         * @param ex        * @return true:如果处理了该异常信息;否则返回false.        */          private boolean handleException(Throwable ex) {              if (ex == null) {                  return false;              }              //收集设备参数信息               collectDeviceInfo(mContext);                        //使用Toast来显示异常信息              new Thread() {                  @Override                  public void run() {                      Looper.prepare();                      Toast.makeText(mContext, "很抱歉,程序出现异常,即将退出.", Toast.LENGTH_SHORT).show();                      Looper.loop();                  }              }.start();              //保存日志文件               saveCatchInfo2File(ex);            return true;          }                    /**        * 收集设备参数信息        * @param ctx        */          public void collectDeviceInfo(Context ctx) {              try {                  PackageManager pm = ctx.getPackageManager();                  PackageInfo pi = pm.getPackageInfo(ctx.getPackageName(), PackageManager.GET_ACTIVITIES);                  if (pi != null) {                      String versionName = pi.versionName == null ? "null" : pi.versionName;                      String versionCode = pi.versionCode + "";                      infos.put("versionName", versionName);                      infos.put("versionCode", versionCode);                  }              } catch (NameNotFoundException e) {                  Log.e(TAG, "an error occured when collect package info", e);              }              Field[] fields = Build.class.getDeclaredFields();              for (Field field : fields) {                  try {                      field.setAccessible(true);                      infos.put(field.getName(), field.get(null).toString());                      Log.d(TAG, field.getName() + " : " + field.get(null));                  } catch (Exception e) {                      Log.e(TAG, "an error occured when collect crash info", e);                  }              }          }                /**        * 保存错误信息到文件中        *         * @param ex        * @return  返回文件名称,便于将文件传送到服务器        */          private String saveCatchInfo2File(Throwable ex) {                            StringBuffer sb = new StringBuffer();              for (Map.Entry<String, String> entry : infos.entrySet()) {                  String key = entry.getKey();                  String value = entry.getValue();                  sb.append(key + "=" + value + "\n");              }                            Writer writer = new StringWriter();              PrintWriter printWriter = new PrintWriter(writer);              ex.printStackTrace(printWriter);              Throwable cause = ex.getCause();              while (cause != null) {                  cause.printStackTrace(printWriter);                  cause = cause.getCause();              }              printWriter.close();              String result = writer.toString();              sb.append(result);              try {                  long timestamp = System.currentTimeMillis();                  String time = formatter.format(new Date());                  String fileName = "crash-" + time + "-" + timestamp + ".log";                  if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {                      String path = "/mnt/sdcard/crash/";                      File dir = new File(path);                      if (!dir.exists()) {                          dir.mkdirs();                      }                      FileOutputStream fos = new FileOutputStream(path + fileName);                      fos.write(sb.toString().getBytes());                    //发送给开发人员                  sendCrashLog2PM(path+fileName);                  fos.close();                  }                  return fileName;              } catch (Exception e) {                  Log.e(TAG, "an error occured while writing file...", e);              }              return null;          }                /**      * 将捕获的导致崩溃的错误信息发送给开发人员      *       * 目前只将log日志保存在sdcard 和输出到LogCat中，并未发送给后台。      */      private void sendCrashLog2PM(String fileName){          if(!new File(fileName).exists()){              Toast.makeText(mContext, "日志文件不存在！", Toast.LENGTH_SHORT).show();              return;          }          FileInputStream fis = null;          BufferedReader reader = null;          String s = null;          try {              fis = new FileInputStream(fileName);              reader = new BufferedReader(new InputStreamReader(fis, "GBK"));              while(true){                  s = reader.readLine();                  if(s == null) break;                  //由于目前尚未确定以何种方式发送，所以先打出log日志。                  Log.i("info", s.toString());              }          } catch (FileNotFoundException e) {              e.printStackTrace();          } catch (IOException e) {              e.printStackTrace();          }finally{   // 关闭流              try {                  reader.close();                  fis.close();              } catch (IOException e) {                  e.printStackTrace();              }          }      }  }      

根据 资源名称 获取 资源ID

//<span style="color:#333333;"><span style="font-family: Monaco, 'DejaVu sans Mono', 'Bitstream Vera sans Mono', Consolas, 'Courier new', monospace; font-size: 14px; word-wrap: normal; word-break: normal; line-height: 21px;"><span style="word-wrap: normal; word-break: normal;">第一个参数</span></span><span style="font-family: Monaco, 'DejaVu sans Mono', 'Bitstream Vera sans Mono', Consolas, 'Courier new', monospace; font-size: 14px; word-wrap: normal; word-break: normal; line-height: 21px;">格式是：包名 + : + 资源文件夹名 + / +资源名；</span><span style="font-family: Monaco, 'DejaVu sans Mono', 'Bitstream Vera sans Mono', Consolas, 'Courier new', monospace; font-size: 14px; word-wrap: normal; word-break: normal; line-height: 21px;"><span style="word-wrap: normal; word-break: normal;">是这种格式 <wbr>然后其他的可以为null</wbr></span></span></span>Resources resources = context.getResources();int indentify = resources.getIdentifier(org.loveandroid.androidtest:drawable/icon",null,null);if(indentify>0){icon = resources.getDrawable(indentify);}    

第一个参数为资源名，第二个为资源属性是ID或者是Drawable，第三个为包名。

Resources resources = context.getResources();int indentify= getResources().getIdentifier("icon", "drawable", "org.anddev.android.testproject");

 Resources themeResources=null;        PackageManager pm=context.getPackageManager();        try {            themeResources=pm.getResourcesForApplication(packageName);            return themeResources.getIdentifier(name, type, packageName);        } catch (NameNotFoundException e) {            e.printStackTrace();        }