copy Fields from one object to Activity via reflection - Android java.lang.reflect

Android examples for java.lang.reflect:Field

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Description

copy Fields from one object to Activity via reflection

Demo Code


//package com.java2s;
import java.lang.reflect.Field;

import android.app.Activity;

public class Main {
    public static void copyFields(Class clazz, String[] fields,
            Object host, Activity target) {
        for (String f : fields) {
            Field declaredField = null;
            try {
                declaredField = clazz.getDeclaredField(f);
                setField(target, declaredField,
                        getFiledValue(clazz, host, f));
            } catch (Exception e) {
                throw new RuntimeException("setField(). field: "
                        + declaredField, e);
            }/*from  w  w  w .  ja  v  a 2s  . c om*/
        }
    }

    public static void setField(Object object, Field field, Object value) {
        field.setAccessible(true);
        try {
            field.set(object, value);
        } catch (Exception e) {
            throw new RuntimeException("setField(). field: " + field, e);
        }
    }

    public static Object getFiledValue(Class clazz, Object object,
            String fieldName) {
        Object f = null;
        try {
            Field declaredField = getFiled(clazz, object, fieldName);
            declaredField.setAccessible(true);
            f = declaredField.get(object);

            return f;
        } catch (Exception e) {
            throw new RuntimeException("getFiledValue(). class: " + clazz
                    + " object: " + object + " field: " + fieldName, e);
        }
    }

    public static Field getFiled(Class clazz, Object object,
            String fieldName) {
        try {
            Field declaredField = clazz.getDeclaredField(fieldName);

            return declaredField;
        } catch (Exception e) {
            throw new RuntimeException("getFiled(). fieldName: "
                    + fieldName, e);
        }
    }
}

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