Java tutorial
//package com.java2s; //License from project: Apache License import android.util.Log; import java.lang.reflect.Field; public class Main { private Field field; public static boolean replaceField(String className, String fieldName, Object desObj, Object fieldObj) { Field tempField; try { tempField = Class.forName(className).getDeclaredField(fieldName); tempField.setAccessible(true); tempField.set(desObj, fieldObj); return true; } catch (NoSuchFieldException e) { // TODO Auto-generated catch block Log.i("DEX", "" + e.getMessage()); // e.printStackTrace(); } catch (ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IllegalArgumentException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IllegalAccessException e) { // TODO Auto-generated catch block e.printStackTrace(); } return false; } public void set(Object desObj, Object fieldObj) { try { field.set(desObj, fieldObj); } catch (IllegalArgumentException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IllegalAccessException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }