Android Open Source - playnomics-android Context Wrapper

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License

The source code is released under:
Apache License
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Java Source Code

package com.playnomics.android.util;
/*  w  w w .  j  a  va2s . co m*/
import android.content.Context;
import android.content.SharedPreferences;

public class ContextWrapper {

  static final String CACHE_NAME = "com.playnomics.cache";
  static final String PUSH_ID_CACHE_KEY = "pushId";
  static final String LAST_EVENT_TIME_CACHE_KEY = "lastEventTime";
  static final String SESSION_START_TIME_CACHE_KEY = "sessionStartTime";
  static final String APP_VERSION_CACHE_KEY = "appVersion";
  static final String APP_VERSION_NAME_CACHE_KEY = "appVersionName";
  static final String SESSION_ID_KEY = "sessionId";
  static final String ANDROID_VERSION_CACHE_KEY = "androidVersion";

  static final int DEFAULT_CACHE_VALUE = -1;

  private SharedPreferences preferences;
  private Logger logger;
  private Util util;
  private Context context;

  public ContextWrapper(Context context, Logger logger, Util util) {
    this.logger = logger;
    this.util = util;
    this.context = context;
    preferences = context.getSharedPreferences(CACHE_NAME,
        Context.MODE_PRIVATE);
  }

  public Context getContext() {
    return context;
  }

  public EventTime getLastEventTime() {
    return getEventTimeValue(ContextWrapper.LAST_EVENT_TIME_CACHE_KEY);
  }

  public void setLastEventTime(EventTime time) {
    setEventTimeValue(ContextWrapper.LAST_EVENT_TIME_CACHE_KEY, time);
  }

  public EventTime getLastSessionStartTime() {
    return getEventTimeValue(ContextWrapper.SESSION_START_TIME_CACHE_KEY);
  }

  public void setLastSessionStartTime(EventTime time) {
    setEventTimeValue(ContextWrapper.SESSION_START_TIME_CACHE_KEY, time);
  }

  public LargeGeneratedId getPreviousSessionId() {
    Long sessionId = preferences.getLong(SESSION_ID_KEY,
        DEFAULT_CACHE_VALUE);
    if (sessionId < 0) {
      // session ID was never saved
      return null;
    }

    return new LargeGeneratedId(sessionId);
  }

  public void setPreviousSessionId(LargeGeneratedId sessionId) {
    SharedPreferences.Editor editor = preferences.edit();
    editor.putLong(SESSION_ID_KEY, sessionId.getId());
    editor.commit();
  }

  public String getPushRegistrationId() {
    return preferences.getString(ContextWrapper.PUSH_ID_CACHE_KEY, null);
  }

  public void setPushRegistrationId(String pushId) {
    SharedPreferences.Editor editor = preferences.edit();
    editor.putString(ContextWrapper.PUSH_ID_CACHE_KEY, pushId);
    editor.commit();
  }

  public int getApplicationVersion() {
    return preferences.getInt(ContextWrapper.APP_VERSION_CACHE_KEY,
        DEFAULT_CACHE_VALUE);
  }

  private void setApplicationVersion(int version) {
    SharedPreferences.Editor editor = preferences.edit();
    editor.putInt(ContextWrapper.APP_VERSION_CACHE_KEY, version);
    editor.commit();
  }

  public int getCurrentAppVersion() {
    return util.getApplicationVersionFromContext(context);
  }

  public String getApplicationVersionName() {
    return preferences.getString(ContextWrapper.APP_VERSION_NAME_CACHE_KEY,
        null);
  }

  private void setApplicationVersionName(String version) {
    if (version==null) return;
    SharedPreferences.Editor editor = preferences.edit();
    editor.putString(ContextWrapper.APP_VERSION_NAME_CACHE_KEY, version);
    editor.commit();
  }

  public String getCurrentAppVersionName() {
    return util.getApplicationVersionStringFromContext(context);
  }

  public String getCachedAndroidVersion() {
    return preferences.getString(ContextWrapper.ANDROID_VERSION_CACHE_KEY,
        null);
  }

  private void cacheAndroidVersion(String version) {
    SharedPreferences.Editor editor = preferences.edit();
    editor.putString(ContextWrapper.ANDROID_VERSION_CACHE_KEY, version);
    editor.commit();
  }

  public boolean isAppVersionChanged() {
    int cachedVersion = getApplicationVersion();
    int currentVersion = getCurrentAppVersion();
    String cachedVersionName = getApplicationVersionName();
    String currentVersionName = getCurrentAppVersionName();
    if ( (cachedVersion != currentVersion) ||
       (currentVersionName!=null && Util.safeStringCompare(currentVersionName, cachedVersionName)!=0) ) {
      setApplicationVersion(currentVersion);
      setApplicationVersionName(currentVersionName);
      // the push ID is no longer valid
      setPushRegistrationId(null);
      return true;
    }
    return false;
  }

  public boolean isAndroidVersionChanged() {
    String cachedVersion = getCachedAndroidVersion();
    String currentVersion = Util.getAndroidOSVersion();
    if (Util.safeStringCompare(currentVersion, cachedVersion)!=0) {
      cacheAndroidVersion(currentVersion);
      return true;
    }
    return false;
  }

  public boolean pushSettingsOutdated() {
    return Util.stringIsNullOrEmpty(getPushRegistrationId());
  }

  private EventTime getEventTimeValue(String key) {
    long lastEventTimeMilliseconds = preferences.getLong(key,
        DEFAULT_CACHE_VALUE);

    if (lastEventTimeMilliseconds >= 0) {
      return new EventTime(lastEventTimeMilliseconds);
    }
    return null;
  }

  private void setEventTimeValue(String key, EventTime value) {
    SharedPreferences.Editor editor = preferences.edit();
    editor.putLong(key, value.getTimeInMillis());
    editor.commit();
  }
}
Java Source Code List
