Android Open Source - retroband Utils

From Project

Back to project page retroband.
License

The source code is released under:
Apache License
If you think the Android project retroband listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.
Java Source Code

/*
 * Copyright (C) 2014 The Retro Band - Open source smart band project
 *//from w ww  .  j a v a  2s. co m
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.hardcopy.retroband.utils;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.util.Log;


public class Utils {
  private Context mContext;
  
  private static final String TAG = "Utils";  
  
  private static String[] mMessageTypeString = null;
  private static String[] mFilterTypeString = null;
  private static String[] mFilterMatchingTypeString = null;
  private static String[] mFilterReplaceTypeString = null;
  
  private static String[] mCallTypeString = null;
  private static String[] mRFTypeString = null;
  
  private static String mBatteryString = null;
  
  public Utils(Context c) {
    if(mContext == null) {
      mContext = c;
      initialize();
    }
  }
  
  
  private void initialize() {
    // Load strings
    //mMessageTypeString = mContext.getResources().getStringArray(R.array.message_type_array);
    
  }
  
  
  //============================================================
  // App string resource
  //============================================================
  
  public static String getMessageTypeString(int type) {
    if(type > -1 && type < mMessageTypeString.length) {
      return mMessageTypeString[type];
    }
    return null;
  }
  
  public static String getFilterTypeString(int type) {
    if(type > -1 && type < mFilterTypeString.length) {
      return mFilterTypeString[type];
    }
    return null;
  }
  
  public static String getMatchingTypeString(int type) {
    if(type > -1 && type < mFilterMatchingTypeString.length) {
      return mFilterMatchingTypeString[type];
    }
    return null;
  }
  
  public static String getReplaceTypeString(int type) {
    if(type > -1 && type < mFilterReplaceTypeString.length) {
      return mFilterReplaceTypeString[type];
    }
    return null;
  }
  
  public static String getCallTypeString(int type) {
    if(type > -1 && type < mCallTypeString.length) {
      return mCallTypeString[type];
    }
    return null;
  }
  
  public static String getRFTypeString(int type) {
    if(type > -1 && type < mRFTypeString.length) {
      return mRFTypeString[type];
    }
    return null;
  }
  
  public static String getBatteryLevelString(int level) {
    StringBuilder sb = new StringBuilder();
    sb.append(mBatteryString).append(level);
    return sb.toString();
  }
  
  //============================================================
  // Directory, File handling
  //============================================================
  
    public static void initFileDirectory(String path)
  {
    File directory = new File(path);
    if( !directory.exists() ) {
      directory.mkdirs();
    }
  }
  
  public static void deleteDirectory(String path) {
    if(path==null) return;
    if(Utils.isFileExist(new File(path))) {
      deleteFileDirRecursive(path);
    }
  }

  public static void deleteFileDirRecursive(String path) {
    File file = new File(path);
    File[] childFileList = file.listFiles();
    for(File childFile : childFileList)
    {
      if(childFile.isDirectory()) {
        deleteFileDirRecursive(childFile.getAbsolutePath());     //?? ???? ?? 
      }
      else {
        childFile.delete();    //?? ??????
      }
    }
    file.delete();    //root ?? 
  }
  
  public static boolean checkFileExists(String directory, String filename)
  {
    if(directory==null || filename==null)
      return false;
    File kFile = new File(directory+"/"+filename);
    if(kFile != null) {
      return kFile.exists();
    }
    return false;
  }
  
  public static File makeDirectory(String dir_path){
        File dir = new File(dir_path);
        if (!dir.exists())
        {
            dir.mkdirs();
            Log.i(TAG , "!dir.exists");
        }else{
            Log.i(TAG , "dir.exists");
        }
 
        return dir;
    }
 
    public static File makeFile(File dir , String file_path){
        File file = null;
        boolean isSuccess = false;
        if(dir.isDirectory()){
            file = new File(file_path);
            if(file!=null&&!file.exists()){
                Log.i(TAG , "!file.exists");
                try {
                    isSuccess = file.createNewFile();
                } catch (IOException e) {
                    e.printStackTrace();
                } finally{
                    Log.i(TAG, "??????? ?? = " + isSuccess);
                }
            }else{
                Log.i(TAG , "file.exists");
            }
        }
        return file;
    }
 
    public static String getAbsolutePath(File file){
        return ""+file.getAbsolutePath();
    }
 
    public static boolean deleteFile(File file){
        boolean result;
        if(file!=null&&file.exists()){
            file.delete();
            result = true;
        }else{
            result = false;
        }
        return result;
    }
 
    public static boolean isFile(File file){
        boolean result;
        if(file!=null&&file.exists()&&file.isFile()){
            result=true;
        }else{
            result=false;
        }
        return result;
    }
 
    public static boolean isDirectory(File dir){
        boolean result;
        if(dir!=null&&dir.isDirectory()){
            result=true;
        }else{
            result=false;
        }
        return result;
    }
 
    public static boolean isFileExist(File file){
        boolean result;
        if(file!=null&&file.exists()){
            result=true;
        }else{
            result=false;
        }
        return result;
    }
     
    public static boolean reNameFile(File file , File new_name){
        boolean result;
        if(file!=null&&file.exists()&&file.renameTo(new_name)){
            result=true;
        }else{
            result=false;
        }
        return result;
    }
     
    public static String[] getList(File dir){
        if(dir!=null&&dir.exists())
            return dir.list();
        return null;
    }
 
    public static boolean writeFile(File file , byte[] file_content){
        boolean result;
        FileOutputStream fos;
        
        if(file!=null&&file_content!=null){
            try {
                fos = new FileOutputStream(file);
                try {
                    fos.write(file_content);
                    fos.flush();
                    fos.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
            result = true;
        }else{
          Logs.d(TAG, "##### writeFile :: file is null or file does not exists or content is null ");
            result = false;
        }
        return result;
    }
 
    public static String readFile(File file){
      StringBuilder sb = new StringBuilder();
        int readcount=0;
        
        if( file!=null && file.exists() ){
            try {
                FileInputStream fis = new FileInputStream(file);
                Reader in = new InputStreamReader(fis, "UTF-8");
                readcount = (int)file.length();
                char[] tempByte = new char[readcount];
                in.read(tempByte);
//                readcount = (int)file.length();
//                byte[] buffer = new byte[readcount];
//                fis.read(buffer);
                fis.close();
                sb.append(tempByte);
            } catch (Exception e) {
                e.printStackTrace();
                Logs.d(TAG, "##### writeFile :: Exception while FILE IO ");
            }
        } else {
          Logs.d(TAG, "##### writeFile :: file is null or file does not exists or content is null ");
        }
        return sb.toString();
    }
     
    public static boolean copyFile(File file , String save_file){
        boolean result;
        if(file!=null&&file.exists()){
            try {
                FileInputStream fis = new FileInputStream(file);
                FileOutputStream newfos = new FileOutputStream(save_file);
                int readcount=0;
                byte[] buffer = new byte[1024];
                while((readcount = fis.read(buffer,0,1024))!= -1){
                    newfos.write(buffer,0,readcount);
                }
                newfos.close();
                fis.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
            result = true;
        }else{
            result = false;
        }
        return result;
    }
     
  //============================================================
  // URL, File name
  //============================================================
  
  // url ???????? ?? (with extension)
  public static String convertUrlToFileName(String url)
  {
    String name = new File(url).getName();
    return name;
  }
  
  // TODO: url ???????? ?? (without extension)
  public static String convertUrlToFileNameWithoutExt(String url)
  {
    String name = new File(url).getName();
    // TODO
    return name;
  }
  
  
  public static final String REG_EXP_IMAGE_URL = "(?i)http://[a-zA-Z0-9_.\\-%&=?!:;@\"'/]*(?i)(.gif|.jpg|.png|.jpeg)";
  
    // TODO: Not working correctly
    public static List<String> getImageURL(String str) {
    Pattern nonValidPattern = Pattern.compile(REG_EXP_IMAGE_URL);

    List<String> result = new ArrayList<String>();
    Matcher matcher = nonValidPattern.matcher(str);
    while (matcher.find()) {
      result.add(matcher.group(0));
      break;
    }
    return result;
  }
  
    public static Comparator<Object> KeyStringSort = new Comparator<Object>() {
        public int compare(Object s1, Object s2) {
            String ss1 = (String)s1;
            String ss2 = (String)s2;
            return (-1) * ss2.compareTo(ss1);
        }
    };
    
    public static Bitmap getResizedBitmapFromFile(String filePath, int screenW, int screenH, float resizeRatio) 
  {
    //----- Load image as small as possible to reduce memory overhead
        Bitmap pic = null;    
        try 
        {
          File tempFile = new File(filePath);
          if( isFileExist(tempFile) == false ) return null;
          
            // Decode image size
            BitmapFactory.Options options = new BitmapFactory.Options();
            options.inJustDecodeBounds = true;
            
            InputStream is = new FileInputStream(filePath);
            BitmapFactory.decodeStream(is, null, options);
        is.close();

        // Target bitmap size
        int smallerW = (screenW > screenH ? screenH : screenW);  // Get screen width
        int bitmapW = options.outWidth;      // image size Width
        int bitmapH = options.outHeight;    // image size Height
        int imageW = (int)( (float)smallerW * resizeRatio );  // Target bitmap width : Resize image according to resize ratio
        int imageH = (imageW * bitmapH / bitmapW);  // Target bitmap height
            
            int scale = 1;
            int scaleW = bitmapW / imageW;
//            int scaleH = bitmapH / imageH;
            while( scaleW / 2 >= 1 ) {
              scale = scale * 2;
              scaleW = scaleW / 2;
            }

            if (scale > 1) {
                // scale to max possible inSampleSize that still yields an image
                // larger than target
                options = new BitmapFactory.Options();
                options.inSampleSize = scale;
                
                InputStream is2 = new FileInputStream(filePath);
                pic = BitmapFactory.decodeStream(is2, null, options);
                is2.close();

                // resize to desired dimensions
                Bitmap scaledBitmap = Bitmap.createScaledBitmap(pic, (int) imageW, (int) imageH, true);
                pic.recycle();
                pic = scaledBitmap;

                System.gc();
            } else {
              InputStream is2 = new FileInputStream(filePath);
                pic = BitmapFactory.decodeStream(is2);
                is2.close();
            }

        } catch (Exception e) {
            pic = null;
        }
        return pic;    
  }

    
  //============================================================
  // Regular expression
  //============================================================
  
  public static String removeSpecialChars(String str){       
    String match = "[^\uAC00-\uD7A3xfe0-9a-zA-Z\\s]";
    str =str.replaceAll(match, " ");
    return str;
  }
  
  
}
Java Source Code List
