Android Open Source - android-child-lock App Settings

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License

The source code is released under:

Apache License

Java Source Code

package com.alimuzaffar.android.childlock.utils;
import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.pm.PackageManager.NameNotFoundException;
import android.util.Log;
//from w w  w . j  ava 2  s. co  m
public class AppSettings {
  public static boolean    DEBUG      = false;
  private static final String TAG = AppSettings.class.getSimpleName();

  private static AppSettings  instance;
  private SharedPreferences  pref;
  private static final String SETTINGS_NAME = "PL_SETTINGS";
  private Context context;
  
  private String currentVersion;
  private String previousVersion;

  public enum Key {
      PIN,
      IS_PIN_SET,
      APP_VERSION_KEY;
  }
  
  public static AppSettings getInstance(Context context) {
    if (instance == null) {
      instance = new AppSettings(context);
    }
    return instance;
  }

  public AppSettings(Context context) {
    pref = context.getSharedPreferences(SETTINGS_NAME, Activity.MODE_PRIVATE);
    this.context = context.getApplicationContext();
    init();
  }
  
  private void init() {
    previousVersion = getString(Key.APP_VERSION_KEY, "");
     Log.d(TAG, "lastVersion: " + previousVersion);
          try {
        currentVersion = context.getPackageManager().getPackageInfo(
            context.getPackageName(), 0).versionName;
      } catch (NameNotFoundException e) {
        currentVersion = "?";
        Log.e(TAG, "could not get version name from manifest!", e);
      }
          Log.d(TAG, "appVersion: " + currentVersion);
          
          // save new version number to preferences
          set(Key.APP_VERSION_KEY, currentVersion);
  }

  public void set(Key key, String val) {
    SharedPreferences.Editor editor = pref.edit();
    editor.putString(key.toString(), val);
    editor.commit();
  }

  public void set(Key key, int val) {
    SharedPreferences.Editor editor = pref.edit();
    editor.putInt(key.toString(), val);
    editor.commit();
  }

  public void set(Key key, boolean val) {
    set(key.toString(), val);
  }
  
  public void set(String key, boolean val) {
    SharedPreferences.Editor editor = pref.edit();
    editor.putBoolean(key, val);
    editor.commit();
  }
  
  public void set(Key key, float val) {
    SharedPreferences.Editor editor = pref.edit();
    editor.putFloat(key.toString(), val);
    editor.commit();
  }

  public void set(Key key, double val) {
    SharedPreferences.Editor editor = pref.edit();
    editor.putString(key.toString(), String.valueOf(val));
    editor.commit();
  }

  public void set(Key key, long val) {
    SharedPreferences.Editor editor = pref.edit();
    editor.putLong(key.toString(), val);
    editor.commit();
  }

  public String getString(Key key) {
    return pref.getString(key.toString(), null);
  }

  public String getString(Key key, String defaultVal) {
    return pref.getString(key.toString(), defaultVal);
  }

  public String getString(String key) {
    return pref.getString(key, null);
  }

  public int getInt(Key key) {
    return pref.getInt(key.toString(), 0);
  }

  public long getLong(Key key) {
    return pref.getLong(key.toString(), 0);
  }

  public float getFloat(Key key) {
    return pref.getFloat(key.toString(), 0);
  }

  public double getDouble(Key key) {
    try {
      return Double.valueOf(pref.getString(key.toString(), "0"));
    } catch (NumberFormatException nfe) {
      return 0;
    }
  }

  public boolean getBoolean(Key key) {
    return pref.getBoolean(key.toString(), false);
  }

  public boolean getBoolean(String key) {
    return pref.getBoolean(key, false);
  }
  
  public boolean firstRun() {
    return  !previousVersion.equals(currentVersion);
  }
  
    public boolean firstRunEver() {
        return  "".equals(previousVersion);
    }
}

Java Source Code List

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