get Id By Name from resource - Android App

Android examples for App:Resource

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  2. Android
  3. App
  4. Resource

Description

get Id By Name from resource

Demo Code


//package com.java2s;
import android.content.Context;

public class Main {
    public static int getIdByName(Context context, String className,
            String name) {/*w  w w  .ja va  2  s .com*/
        String packageName = context.getPackageName();
        Class r = null;
        int id = 0;
        try {
            r = Class.forName(packageName + ".R");

            Class[] classes = r.getClasses();
            Class desireClass = null;

            for (int i = 0; i < classes.length; ++i) {
                if (classes[i].getName().split("\\$")[1].equals(className)) {
                    desireClass = classes[i];
                    break;
                }
            }
            if (classes.length == 0) {
                desireClass = Class
                        .forName(packageName + ".R$" + className);
            }
            if (desireClass != null)
                id = desireClass.getField(name).getInt(desireClass);
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        } catch (SecurityException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (NoSuchFieldException e) {
            e.printStackTrace();
        }

        return id;
    }
}

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