get Object Field Value - Android java.lang.reflect

Android examples for java.lang.reflect:Field Value

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Description

get Object Field Value

Demo Code


//package com.java2s;

import java.lang.reflect.Method;
import android.text.TextUtils;
import android.util.Log;

public class Main {
    private static final String CLASS = "ReflectionUtil";
    private static final String METHOD_HEAD_GET = "get";
    private static final String METHOD_HEAD_IS = "is";

    public static Object getObjectFieldVal(Object object, String fieldName) {
        if (object == null || TextUtils.isEmpty(fieldName))
            return null;

        Method method = reflectClassMethod(object.getClass(),
                METHOD_HEAD_GET + fieldName, true);
        if (method != null) {
            try {
                return method.invoke(object);
            } catch (Exception e) {
                Log.e(CLASS, e.getMessage() + "");
            }//from   ww w .  j  a  v  a 2 s . c  o m
        }

        method = reflectClassMethod(object.getClass(), METHOD_HEAD_IS
                + fieldName, true);
        if (method != null) {
            try {
                return method.invoke(object);
            } catch (Exception e) {
                Log.e(CLASS, e.getMessage() + "");
            }
        }
        return null;
    }

    private static Method reflectClassMethod(Class<?> clazz,
            String methodName, boolean isEqualsIgnoreCase) {
        if (clazz == null || TextUtils.isEmpty(methodName))
            return null;

        Method[] methods = clazz.getMethods();
        for (Method method : methods) {
            if ((isEqualsIgnoreCase && method.getName().equalsIgnoreCase(
                    methodName))
                    || method.getName().equals(methodName)) {
                return method;
            }
        }
        return null;
    }
}

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