get Method from object by method name and parameter object type - Android java.lang.reflect

Android examples for java.lang.reflect:Method Get

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Description

get Method from object by method name and parameter object type

Demo Code


import java.lang.reflect.Method;

import android.content.Context;
import android.util.Log;

public class Main {
  private static final String TAG = "";

  public static Method getMethod(Object object, String methodName,
      Object[] types) {/*from   w  w  w .  j a  va  2s.co  m*/
    Method method = null;
    try {

      Class<?>[] typeClassArray = null;

      if (types != null && types.length > 0) {
        typeClassArray = new Class<?>[types.length];

        for (int i = 0; i < types.length; i++) {
          typeClassArray[i] = (Class<?>) types[i];
        }

      } else {
        typeClassArray = new Class<?>[] {};
      }

      method = object.getClass().getMethod(methodName, typeClassArray);

    } catch (NoSuchMethodException e) {
      Log.w(TAG, "Method \"" + methodName + "\" not found for "
          + object.getClass().toString());
    } catch (Exception e) {
      Log.e(TAG, e.getMessage());
    }
    return method;
  }

  public static Class<?> getClass(Context context, String className) {
    Class<?> classDefinition = null;
    if (className.contains(context.getPackageName())) {
      classDefinition = getClass(className);
    } else {
      classDefinition = getClass(context.getPackageName() + className);
    }
    return classDefinition;
  }

  public static Class<?> getClass(String className) {
    Class<?> classDefinition = null;
    try {
      classDefinition = Class.forName(className);
    } catch (ClassNotFoundException e) {
      Log.w(TAG, "Class \"" + className + "\" not found");
    }
    return classDefinition;
  }
}

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