Java Log类代码示例

import ua.at.tsvetkov.util.Log; //导入依赖的package包/类
@Override
   public void parse(InputStream inputStream) throws Exception {
      if (inputStream == null) {
         Log.w("InputStream is null. Parsing aborted.");
         return;
      }
//        BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
//        String line;
//        StringBuffer buffer = new StringBuffer();
//        while ((line = reader.readLine()) != null) {
//            buffer.append(line);
//        }
//        process(buffer.toString().trim());

      // better performance
      ByteArrayOutputStream result = new ByteArrayOutputStream();
      byte[]                buffer = new byte[1024];
      int                   length;
      while ((length = inputStream.read(buffer)) != -1) {
         result.write(buffer, 0, length);
      }
      process(result.toString("UTF-8"));
   }
 

import ua.at.tsvetkov.util.Log; //导入依赖的package包/类
private void saveToFile() throws IOException {
   File f = new File(cacheFileName);
   if (!request.isNeedToRewriteFile() && f.exists() && f.length() > 0) {
      if (DataProcessor.getInstance().getConfiguration().isLogEnabled()) {
         Log.w(FILE_EXIST + cacheFileName);
      }
      return;
   }
   FileOutputStream out = new FileOutputStream(cacheFileName);
   byte[] buffer = new byte[BUFFER];
   int bytesRead = -1;
   inputStream = request.getInputStream();
   while ((bytesRead = inputStream.read(buffer)) != -1) {
      out.write(buffer, 0, bytesRead);
   }
   out.flush();
   out.close();
   inputStream.close();
   inputStream = new FileInputStream(cacheFileName);
}
 

import ua.at.tsvetkov.util.Log; //导入依赖的package包/类
/**
 * Build new data processor with given configuration
 *
 * @param configuration new configuration
 */
public synchronized void init(DataProcessorConfiguration configuration) {
   if (configuration == null) {
      throw new IllegalArgumentException(ERROR_INIT_CONFIG_WITH_NULL);
   }
   if (this.configuration == null) {
      if (configuration.isLogEnabled) {
         Log.d(LOG_INIT_CONFIG);
      }
      this.configuration = configuration;
   } else {
      Log.w(WARNING_RE_INIT_CONFIG);
   }
   if (configuration.isThreadPoolEnabled) {

      threadPool = new DataProcessorThreadPool();
   }
   if (configuration.isCacheEnabled()) {
      processors = new ProcessorsCache(configuration.getCacheSize());
   }
}
 

import ua.at.tsvetkov.util.Log; //导入依赖的package包/类
/**
 * Return composed URL string from parts or null if not builded
 */
@Override
public String toString() {
   if (sb != null) {
      if (configuration.isCheckingRequestStringEnabled()) {
         try {
            return URLEncoder.encode(sb.toString(), encoding);
         } catch (UnsupportedEncodingException e) {
            Log.e(WRONG_URL, e);
            return "";
         }
      } else {
         return sb.toString();
      }
   } else {
      if (configuration.isLogEnabled()) {
         Log.w(REQUEST_IS_NOT_BUILD);
      }
      return null;
   }
}
 

import ua.at.tsvetkov.util.Log; //导入依赖的package包/类
/**
 * Enable StrictMode in the app. Put call in the first called onCreate() method in Application or Activity.
 *
 * @param aContext the app Context
 */
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public static void enableStrictMode(Context aContext) {
   try {
      int appFlags = aContext.getApplicationInfo().flags;
      if ((appFlags & ApplicationInfo.FLAG_DEBUGGABLE) != 0) {
         StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder().detectDiskReads().detectDiskWrites().detectNetwork().penaltyLog().build());
         StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder().detectActivityLeaks().detectLeakedSqlLiteObjects().detectLeakedClosableObjects().penaltyLog().penaltyDeath().build());
      }
      isStrictMode = true;
      Log.i("StrictMode is enabled.");
   } catch (Throwable throwable) {
      isStrictMode = false;
      Log.i("StrictMode is not supported. Skipping...");
   }
}
 

import ua.at.tsvetkov.util.Log; //导入依赖的package包/类
/**
 * Computes and returns the final hash value for this InputStream data
 *
 * @param in InputStream
 * @return null if has error or hash value
 */
public static byte[] fromInputStream(InputStream in) {
   MessageDigest digester;
   try {
      digester = MessageDigest.getInstance("MD5");
      byte[] bytes = new byte[8192];
      int byteCount;
      while ((byteCount = in.read(bytes)) > 0) {
         digester.update(bytes, 0, byteCount);
      }
      return digester.digest();
   } catch (Exception e) {
      Log.e(e);
   }
   return null;
}
 

import ua.at.tsvetkov.util.Log; //导入依赖的package包/类
/**
 * Delete content from directory
 *
 * @param pathName path for delete a content
 */
public static void deleteDirContent(@NonNull String pathName) {
   File path = new File(pathName);
   String[] files = path.list();
   if (files != null) {
      for (String fileName : files) {
         File file = new File(fileName);
         boolean result = file.delete();
         if (result) {
            Log.v("File success deleted " + fileName);
         } else {
            Log.w("Fail to delete file " + fileName);
         }
      }
   }
}
 

import ua.at.tsvetkov.util.Log; //导入依赖的package包/类
/**
 * Delete directory with a subdirs and a files
 *
 * @param dir directory for delete
 * @return tue if success
 */
public static boolean deleteDir(File dir) {
   if (dir == null) {
      Log.e("Directory eq null - can't delete.");
      return false;
   }
   if (dir.isDirectory()) {
      String[] children = dir.list();
      for (String element : children) {
         boolean success = deleteDir(new File(dir, element));
         if (!success) {
            return false;
         }
      }
   }
   return dir.delete();
}
 

import ua.at.tsvetkov.util.Log; //导入依赖的package包/类
/**
 * Returns the content length in bytes specified by the response header field content-length or -1 if this field is not set.
 *
 * @param url url path to file
 * @return the value of the response header field content-length
 */
static public int getFileLength(String url) {
   HttpURLConnection conn = null;
   int length = 0;
   try {
      conn = (HttpURLConnection) new URL(url).openConnection();
      conn.setRequestProperty("keep-alive", "false");
      conn.setDoInput(true);
      conn.setConnectTimeout(TIMEOUT);
      conn.connect();
      length = conn.getContentLength();
   } catch (Exception e) {
      Log.e(e);
   } finally {
      if (conn != null)
         conn.disconnect();
   }
   return length;
}
 

import ua.at.tsvetkov.util.Log; //导入依赖的package包/类
/**
 * Return file name with extension without directories.
 *
 * @param fullPath full path to file
 * @return file name or empty string if fullPath have not include the correct filename.
 */
public static String getFileName(String fullPath) {
   String fileName = "";
   if (fullPath == null) {
      Log.w("The path to file is null");
      return fileName;
   }
   if (fullPath.length() == 0) {
      Log.w("The path to file is empty");
      return fileName;
   }
   int indexOf = fullPath.lastIndexOf(File.separator);
   if (indexOf == -1) {
      return fullPath;
   }
   try {
      fileName = fullPath.substring(indexOf + 1, fullPath.length());
   } catch (IndexOutOfBoundsException e) {
      Log.wtf("IndexOutOfBoundsException in " + fullPath);
   }
   return fileName;
}
 

import ua.at.tsvetkov.util.Log; //导入依赖的package包/类
/**
 * Return file extension
 *
 * @param fullPath full path to file
 * @return file extension or empty string if fullPath have not include the correct filename or have empty extension.
 */
public static String getFileExtension(String fullPath) {
   String fileName = "";
   if (fullPath == null) {
      Log.w("The path to file is null");
      return fileName;
   }
   if (fullPath.length() == 0) {
      Log.w("The path to file is empty");
      return fileName;
   }
   int pos = fullPath.lastIndexOf(".");
   if (pos != -1) {
      fileName = fullPath.substring(pos + 1, fullPath.length());
   }
   return fileName;
}
 

import ua.at.tsvetkov.util.Log; //导入依赖的package包/类
/**
 * Return path for this file without file name
 *
 * @param fullPath full path to file
 * @return path without file name
 */
public static String getFilePath(String fullPath) {
   String fileName = "";
   if (fullPath == null) {
      Log.w("The path to file is null");
      return fileName;
   }
   if (fullPath.length() == 0) {
      Log.w("The path to file is empty");
      return fileName;
   }
   int pos = fullPath.lastIndexOf(File.separator);
   if (pos != -1) {
      fileName = fullPath.substring(0, pos + 1);
      return fileName;
   }
   return "";
}
 

import ua.at.tsvetkov.util.Log; //导入依赖的package包/类
@Override
protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.ac_main);

   acMainListItems = (ListView) findViewById(R.id.acMainListItems);
   acMainProgressLayout = (FrameLayout) findViewById(R.id.acMainProgressLayout);

   acMainListItems.setOnItemClickListener(new OnItemClickListener() {

      @Override
      public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
         Log.v("Monarch click");
      }
   });

   adapter = new MonarchAdapter(this);
   acMainListItems.setAdapter(adapter);
   getData();
}
 

import ua.at.tsvetkov.util.Log; //导入依赖的package包/类
private DataProcessorConfiguration(final Builder builder) {
   isLogEnabled = builder.isLogEnabled;
   httpUserAgent = builder.httpUserAgent;
   timeout = builder.timeout;
   isThreadPoolEnabled = builder.isThreadPoolEnabled;
   host = builder.host;
   port = builder.port;
   scheme = builder.scheme;
   encoding = builder.encoding;
   isCheckingRequestStringEnabled = builder.isCheckingRequestStringEnabled;
   isShowProcessingTime = builder.isShowProcessingTime;
   testServerUrl = builder.testServerUrl;
   isCacheEnabled = builder.isCacheEnabled;
   cacheSize = builder.cacheSize;
   if (isLogEnabled) {
      Log.i("========= Data Processor Configuration ==========");
      Log.i("Host = " + scheme + host + port);
      Log.i("Test url = " + testServerUrl);
      Log.i("isShowProcessingTime = " + isShowProcessingTime);
      if (isCacheEnabled) {
         Log.i("isCacheEnabled = true, cacheSize = " + cacheSize);
      } else {
         Log.i("isCacheEnabled = false");
      }
      Log.i("httpUserAgent = " + httpUserAgent);
      Log.i("=================================================");
   }
}
 

import ua.at.tsvetkov.util.Log; //导入依赖的package包/类
/**
 * Returns the value mapped by name if it exists, coercing it if necessary,
 * or empty if no such mapping exists and print warning in to LogCat.
 *
 * @param obj  JSONObject
 * @param name name of value
 * @return String
 */
public String getString(JSONObject obj, String name) {
    String result = null;
    try {
        result = obj.getString(name);
    } catch (JSONException e) {
        Log.w(this, name + " is not exist in this JSON object");
    }
    if (result == null || result.equals("null")) {
        result = "";
    }
    return result;
}