Android Open Source - android-core Utils

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License

The source code is released under:

Apache License

Java Source Code

/** 
 * [SIMINOV FRAMEWORK]//w w  w .  ja v a 2s  .  c o m
 * Copyright [2015] [Siminov Software Solution LLP|support@siminov.com]
 *
 * 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 siminov.core.utils;

import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.util.Random;

import siminov.core.exception.SiminovException;
import siminov.core.log.Log;
import android.os.Build;


/**
 * Exposes utility methods which can be used by both SIMINOV/Application. 
 */
public class Utils {

  /**
   * Get string from input stream.
   * @param inputStream Input Stream.
   * @return String
   * @throws SiminovException If any exception occur while getting string from input stream.
   */
  public static String toString(final InputStream inputStream) throws SiminovException {
    if(inputStream == null) {
      Log.error(Utils.class.getName(), "getString", "Invalid InputStream Found.");
      throw new SiminovException(Utils.class.getName(), "getString", "Invalid InputStream Found.");
    }
    
    byte[] bytes = new byte[1000];

    StringBuilder x = new StringBuilder();
    int numRead = 0;
    
    try {
      while ((numRead = inputStream.read(bytes)) >= 0) {
          x.append(new String(bytes, 0, numRead));
      }
    } catch(Exception exception) {
      Log.error(Utils.class.getName(), "getString", "Exception caught while getting string from inputstream, " + exception.getMessage());
    }

    try {
      inputStream.close();      
    } catch(Exception exception) {
      Log.error(Utils.class.getName(), "getString", "Exception caught while closing inputstream, " + exception.getMessage());
    }
    
    return x.toString();
  }
  
  /**
   * Get input stream from string.
   * @param string String.
   * @return Input Stream.
   * @throws SiminovException If any exception occur while getting input stream from string.
   */
  public static InputStream toInputStream(final String string) throws SiminovException {
    if(string == null || string.length() <= 0) {
      Log.error(Utils.class.getName(), "getInputStream", "Invalid String Found.");
      throw new SiminovException(Utils.class.getName(), "getInputStream", "Invalid String Found.");
    }
    
    byte[] bytes = null;
    
    try {
      bytes = string.getBytes("UTF-8");
    } catch(Exception exception) {
      Log.error(Utils.class.getName(), "getInputStream", "Exception caught while getting bytes from string, " + exception.getMessage());
      throw new SiminovException(Utils.class.getName(), "getInputStream", "Exception caught while getting bytes from string, " + exception.getMessage());
    }
    
     return toInputStream(bytes);
  }
  
  /**
   * Get input stream from string.
   * @param bytes Byte Array.
   * @return Input Stream.
   * @throws SiminovException If any exception occur while getting input stream from byte array.
   */
  public static InputStream toInputStream(final byte[] bytes) throws SiminovException {
    if(bytes == null || bytes.length <= 0) {
      Log.error(Utils.class.getName(), "getInputStream", "Invalid ByteArray Found.");
      throw new SiminovException(Utils.class.getName(), "getInputStream", "Invalid ByteArray Found.");
    }
    
    return new ByteArrayInputStream(bytes);
  }
  
  /**
   * Get generated unique id.
   * @return Long Unique Id.
   */
  public static Long generateUniqueId() {
    return new Random().nextLong();
  }
  
  /**
   * Check whether application is running on emulator or not.
   * @return TRUE: If application is running on emulator, FALSE: If application is not running on emulator.
   */
  public static boolean isEmulator() {
    return Build.BRAND.startsWith("generic") && Build.DEVICE.startsWith("generic");
  }
}

Java Source Code List

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