find View By Id via reflection - Android User Interface

Android examples for User Interface:View Find

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Description

find View By Id via reflection

Demo Code

/**/*  www.jav a 2  s  .co m*/
 * Copyright (c) {2003,2011} {openmobster@gmail.com} {individual contributors as indicated by the @authors tag}.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 */
//package com.java2s;
import java.lang.reflect.Field;
import android.app.Activity;

import android.view.View;

public class Main {
    public static View findViewById(Activity activity, String viewId) {
        try {
            String idClass = activity.getPackageName() + ".R$id";
            Class clazz = Class.forName(idClass);
            Field field = clazz.getField(viewId);

            return activity.findViewById(field.getInt(clazz));
        } catch (Exception e) {
            return null;
        }
    }
}

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