Android Open Source - DEVIEW2014_AndroidApp_Demo App Context

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License

The source code is released under:

Apache License

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Java Source Code

package com.nhn.android.deview;
//w  ww. jav a  2s  . com
import android.content.Context;
import android.content.SharedPreferences;
import android.database.sqlite.SQLiteDatabase;
import android.preference.Preference;
import android.util.DisplayMetrics;

public class AppContext {
  public static final String PREF_KEY = "deview";
  
  public static Context getContext() {
    return DeViewApplication.mInstance;
  }
  
  public static SQLiteDatabase getDB() {
    return DeViewApplication.mInstance.mDB.mDB;
  }
  
  /* AppContext Storage: Data Transfer  */
  public static void putValue(Class<?> cls,Object value) {
    String key = cls.getName();
     DeViewApplication.mInstance.saveObject(key, value);
  }
  
  public static<T> T getValue(Class<?> cls,boolean remove) {
    String key = cls.getName();
    T t = (T)DeViewApplication.mInstance.loadObject(key,remove);   
    return t;
  }
  //TO store key-values
  public static void putValue(String key,Object value) {
     DeViewApplication.mInstance.saveObject(key, value);
  }
  
  public static<T> T getValue(String key,boolean remove) {
    T t = (T)DeViewApplication.mInstance.loadObject(key,remove);   
    return t;
  }
  
  //Shared Preference 
  public static SharedPreferences getAppPref() {
    SharedPreferences pref = getContext().getSharedPreferences(PREF_KEY, 0);
    return pref;
  }

  //To redirect  to UI Thread
  public static void post(Runnable r) {
    DeViewApplication.mInstance.mHandler.post(r);
  }
  
  public static void postDelayed(Runnable r,int millis) {
    DeViewApplication.mInstance.mHandler.postDelayed(r,millis);
  }
  
  // UI Conversion
  public static int dp2px(float dp) {
    return (int)(DeViewApplication.mInstance.mDesity * dp);
  }
  
  public static int getScreenWidth() {
    return DeViewApplication.mInstance.mDisplay.getWidth();
  }
}

Java Source Code List