MResource.java

package com.utils.realmo;



import android.content.Context;

/**
 * 根据资源的名字获取其ID值
 * @author realmo
 *
 */
public class MResource {
 public static int getIdByName(Context context, String className, String name) {
 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 (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;
 }
}