Android 常见工具类封装

public class MD5Util {public final static String MD5(String s) {char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9','a', 'b', 'c', 'd', 'e', 'f' };try {byte[] btInput = s.getBytes();// 获得MD5摘要算法的 MessageDigest 对象MessageDigest mdInst = MessageDigest.getInstance("MD5");// 使用指定的字节更新摘要
            mdInst.update(btInput);// 获得密文byte[] md = mdInst.digest();// 把密文转换成十六进制的字符串形式int j = md.length;char str[] = new char[j * 2];int k = 0;for (int i = 0; i < j; i++) {byte byte0 = md[i];str[k++] = hexDigits[byte0 >>> 4 & 0xf];str[k++] = hexDigits[byte0 & 0xf];}return new String(str);} catch (Exception e) {return null;}}public static void main(String[] args) {System.out.print(MD5Util.MD5("password"));}
}

public class CSleep {public static final long DEFAULT_SLEEP_TIME = 500;private boolean          isRuning           = false;public boolean isRuning() {return isRuning;}public void runWithTime(final long defaultSleepTime) {isRuning = true;new Thread() {@Overridepublic void run() {try {sleep(defaultSleepTime, 0);} catch (InterruptedException e) {e.printStackTrace();}isRuning = false;super.run();}}.start();}
}

 /*** 检查网络是否连通* * @return boolean* @since V1.0*/public boolean isNetworkAvailable(Context context) {// 创建并初始化连接对象ConnectivityManager connMan = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);// 判断初始化是否成功并作出相应处理if (connMan != null) {// 调用getActiveNetworkInfo方法创建对象,如果不为空则表明网络连通，否则没连通NetworkInfo info = connMan.getActiveNetworkInfo();if (info != null) {return info.isAvailable();}}return false;}

/*** UncaughtException处理类,当程序发生Uncaught异常的时候,由该类来接管程序,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 {/** TAG */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             mCrashHandler;/** 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");/*** 私有构造函数*/private CrashHandler() {}/*** 获取CrashHandler实例 ,单例模式* * @return* @since V1.0*/public static CrashHandler getInstance() {if (mCrashHandler == null)mCrashHandler = new CrashHandler();return mCrashHandler;}/*** 初始化* * @param context* @since V1.0*/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*/@Overridepublic 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) {CLog.e(TAG, "uncaughtException() InterruptedException:" + 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.* @since V1.0*/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() {@Overridepublic 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* @since V1.0*/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) {CLog.e(TAG, "collectDeviceInfo() an error occured when collect package info NameNotFoundException:", e);}Field[] fields = Build.class.getDeclaredFields();for (Field field : fields) {try {field.setAccessible(true);infos.put(field.getName(), field.get(null).toString());CLog.d(TAG, field.getName() + " : " + field.get(null));} catch (Exception e) {CLog.e(TAG, "collectDeviceInfo() an error occured when collect crash info Exception:", 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 = FilePathUtil.getiVMSDirPath() + "/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) {CLog.e(TAG, "saveCatchInfo2File() an error occured while writing file... Exception:", 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。* * @param fileName* @since V1.0*/private void sendCrashLog2PM(String fileName) {if (!new File(fileName).exists()) {CLog.e(TAG, "sendCrashLog2PM() 日志文件不存在");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。
                CLog.e(TAG, s);}} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();} finally { // 关闭流try {reader.close();fis.close();} catch (IOException e) {e.printStackTrace();}}}
}

 public static Dialog showDialog(Context ctx, int layViewID, int ThemeType) {Dialog res = new Dialog(ctx, ThemeType);res.setContentView(layViewID);return res;}

public class ImageAPI {public static Bitmap getImageByFilePath(String filePath, int scale) {Bitmap res = null;BitmapFactory.Options options = new BitmapFactory.Options();options.inJustDecodeBounds = true;BitmapFactory.decodeFile(filePath, options);options.inJustDecodeBounds = false;options.inSampleSize = scale;options.inPreferredConfig = Bitmap.Config.ARGB_4444;return res;}public static Bitmap getImageByFilePath(String filePath, int Towidth, int ToHeight) {Bitmap res = null;BitmapFactory.Options options = new BitmapFactory.Options();options.inJustDecodeBounds = true;if (!new File(filePath).exists())return res;BitmapFactory.decodeFile(filePath, options);int origionalWidth = options.outHeight;int origionalHeight = options.outWidth;options.inJustDecodeBounds = false;int scale = Math.max(origionalWidth / Towidth, origionalHeight / ToHeight);options.inSampleSize = scale;options.inPreferredConfig = Bitmap.Config.ARGB_4444;try {res = BitmapFactory.decodeFile(filePath, options);} catch (Exception e) {e.printStackTrace();return null;} catch (OutOfMemoryError e) {e.printStackTrace();return null;}return res;}}

public static void showToast(Context ctx, int id, String str) {if (str == null) {return;}Toast toast = Toast.makeText(ctx, ctx.getString(id) + str, Toast.LENGTH_SHORT);toast.setGravity(Gravity.CENTER, 0, 0);toast.show();}public static void showToast(Context ctx, String errInfo) {if (errInfo == null) {return;}Toast toast = Toast.makeText(ctx, errInfo, Toast.LENGTH_SHORT);toast.setGravity(Gravity.CENTER, 0, 0);toast.show();}