Android Open Source - plus1-android-sdk Plus1 Helper

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The source code is released under:
Copyright (c) 2012, WapStart All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: - Red...
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Java Source Code

/**
 * Copyright (c) 2010, Alexander Klestov <a.klestov@co.wapstart.ru>
 * All rights reserved.//from  w  ww  .java  2s .co m
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   * Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 *   * Neither the name of the "Wapstart" nor the names
 *     of its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package ru.wapstart.plus1.sdk;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

import android.content.Context;
import android.content.SharedPreferences;
import android.content.res.Configuration;
import android.os.Build;
import android.util.Log;
import android.util.DisplayMetrics;
import android.view.WindowManager;

final class Plus1Helper {
  private static final String HEX_DIGITS  = "0123456789abcdef";
  private static final String LOGTAG    = "Plus1Helper";

  private Plus1Helper() { /*_*/ }

  public static String getHash(String text)
  {
    try {
      return SHA1(text);
    } catch (NoSuchAlgorithmException e) {
      Log.e(LOGTAG, "NoSuchAlgorithmException: " + e.toString(), e);

      return null; // FIXME: add other hash logic
    }
  }

  // TODO: find out needs of our network
  public static String getUserAgent() {
    return
      "Android "
      + android.os.Build.VERSION.RELEASE + " "
      + android.os.Build.DEVICE + " "
      + android.os.Build.MODEL;
  }

  public static String getStorageValue(Context context, String key) {
    return
      context.getSharedPreferences(Constants.PREFERENCES_STORAGE, 0)
        .getString(key, null);
  }

  public static boolean setStorageValue(Context context, String key, String value) {
    return
      context.getSharedPreferences(Constants.PREFERENCES_STORAGE, 0).edit()
        .putString(key, value)
        .commit();
  }

  public static boolean removeStorageValue(Context context, String key) {
    return
      context.getSharedPreferences(Constants.PREFERENCES_STORAGE, 0).edit()
        .remove(key)
        .commit();
  }

  public static Boolean getStorageBooleanValue(Context context, String key) {
    SharedPreferences preferences =
      context.getSharedPreferences(Constants.PREFERENCES_STORAGE, 0);

    return
      preferences.contains(key)
        ? Boolean.valueOf(preferences.getBoolean(key, false))
        : null;
  }

  public static boolean setStorageBooleanValue(Context context, String key, Boolean value) {
    return
      context.getSharedPreferences(Constants.PREFERENCES_STORAGE, 0).edit()
        .putBoolean(key, value.booleanValue())
        .commit();
  }

  public static String getAndroidId(Context context) {
    String androidId =
      android.provider.Settings.Secure.getString(
        context.getContentResolver(),
        android.provider.Settings.Secure.ANDROID_ID
      );

    if (androidId != null)
      return getHash(androidId);

    return null;
  }

  public static String getBuildSerial() {
    try {
      String serial = (String)Build.class.getField("SERIAL").get(null);
      if (
        !serial.equals(Build.class.getField("UNKNOWN").get(null))
        && !serial.equals("00000000000000") // NOTE: bugs on some devices
      )
        return getHash(serial);
    } catch (Exception e) {
      // NOTE: may be API < 9
    }

    return null;
  }

  public static String getDisplayMetrics(Context context)
  {
    WindowManager windowManager = (WindowManager)context.getSystemService(Context.WINDOW_SERVICE);

    DisplayMetrics metrics = new DisplayMetrics();
    windowManager.getDefaultDisplay().getMetrics(metrics);

    return
      String.format(
        "%dx%d",
        metrics.widthPixels,
        metrics.heightPixels
      );
  }

  public static String getDisplayOrientation(Context context)
  {
    String text;

    switch (context.getResources().getConfiguration().orientation) {
      case Configuration.ORIENTATION_PORTRAIT:
        text = "portrait";
        break;
      case Configuration.ORIENTATION_LANDSCAPE:
        text = "landscape";
        break;
      case Configuration.ORIENTATION_SQUARE:
        text = "square";
        break;
      default:
        text = null;
    };

    return text;
  }

  public static String getContainerMetrics(Plus1BannerView view)
  {
    float density =
      view.getContext()
        .getResources()
        .getDisplayMetrics()
        .density;

    return
      String.format(
        "%dx%d",
        (int)(view.getLayoutParams().width / density + 0.5f),
        (int)(view.getLayoutParams().height / density + 0.5f)
      );
  }

  public static boolean isIntentUrl(String url)
  {
    return isCommonIntentUrl(url) || isPlayMarketIntentUrl(url);
  }

  public static boolean isCommonIntentUrl(String url)
  {
    return
      url.startsWith("tel:")
      || url.startsWith("voicemail:")
      || url.startsWith("sms:")
      || url.startsWith("mailto:")
      || url.startsWith("geo:")
      || url.startsWith("google.streetview:");
  }

  public static boolean isPlayMarketIntentUrl(String url)
  {
    return url.startsWith("market:");
  }

  private static String SHA1(String text) throws NoSuchAlgorithmException
  {
    MessageDigest md = MessageDigest.getInstance("SHA-1");

    byte[] sha1hash = new byte[40];
    md.update(text.getBytes());
    sha1hash = md.digest();

    return convertToHex(sha1hash);
  }

  private static String convertToHex(byte[] raw)
  {
    final StringBuilder hex = new StringBuilder(raw.length * 2);

    for (final byte b : raw) {
      hex
        .append(HEX_DIGITS.charAt((b & 0xF0) >> 4))
        .append(HEX_DIGITS.charAt((b & 0x0F)));
    }
    
    return hex.toString();
  }
}
Java Source Code List
