get Method from class or parent class - Android java.lang.reflect

Android examples for java.lang.reflect:Method Get

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Description

get Method from class or parent class

Demo Code

/*//from www.ja  v  a2  s. co m
 * Copyright 2014-2016 QuickAF
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
//package com.java2s;

import java.lang.reflect.Method;

public class Main {
    public static final Class<?>[] EMPTY_PARAM_TYPES = new Class<?>[0];

    public static Method getMethod(Class<?> sourceClass,
            boolean isFindDeclaredMethod, boolean isUpwardFind,
            String methodName, Class<?>... methodParameterTypes) {
        Method method = null;
        try {
            method = isFindDeclaredMethod ? sourceClass.getDeclaredMethod(
                    methodName, methodParameterTypes) : sourceClass
                    .getMethod(methodName, methodParameterTypes);
        } catch (NoSuchMethodException e1) {
            if (isUpwardFind) {
                Class<?> classs = sourceClass.getSuperclass();
                while (method == null && classs != null) {
                    try {
                        method = isFindDeclaredMethod ? classs
                                .getDeclaredMethod(methodName,
                                        methodParameterTypes)
                                : classs.getMethod(methodName,
                                        methodParameterTypes);
                    } catch (NoSuchMethodException e11) {
                        classs = classs.getSuperclass();
                    }
                }
            }
        }
        return method;
    }

    public static Method getMethod(Class<?> sourceClass, String methodName,
            Class<?>... methodParameterTypes) {
        return getMethod(sourceClass, true, true, methodName,
                methodParameterTypes);
    }

    public static Method getMethod(Class<?> sourceClass, String methodName) {
        return getMethod(sourceClass, methodName, EMPTY_PARAM_TYPES);
    }
}

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