package com.robotium.solo; import java.lang.reflect.Field; /** * A reflection utility class. * * @author Per-Erik Bergman, bergman@uncle.se * */ class Reflect { private Object object; /** * Constructs this object * * @param object the object to reflect on */ public Reflect(Object object) { if (object == null) throw new IllegalArgumentException("Object can not be null."); this.object = object; } /** * Get a field from the object * * @param name the name of the field * * @return a field reference */ public FieldRf field(String name) { return new FieldRf(object, name); } /** * A field reference. */ public class FieldRf { private Class<?> clazz; private Object object; private String name; /** * Constructs this object * * @param object the object to reflect on * @param name the name of the field */ public FieldRf(Object object, String name) { this.object = object; this.name = name; } /** * Constructs this object * * @param outclazz the output type * * @return <T> T */ public <T> T out(Class<T> outclazz) { Field field = getField(); Object obj = getValue(field); return outclazz.cast(obj); } /** * Set a value to a field * * @param value the value to set */ public void in(Object value) { Field field = getField(); try { field.set(object, value); } catch (IllegalArgumentException | IllegalAccessException e) { e.printStackTrace(); } } /** * Set the class type * * @param clazz the type * * @return a field reference */ public FieldRf type(Class<?> clazz) { this.clazz = clazz; return this; } private Field getField() { if (clazz == null) { clazz = object.getClass(); } Field field = null; try { field = clazz.getDeclaredField(name); field.setAccessible(true); } catch (NoSuchFieldException ignored) {} return field; } private Object getValue(Field field) { if (field == null) { return null; } Object obj = null; try { obj = field.get(object); } catch (IllegalArgumentException | IllegalAccessException e) { e.printStackTrace(); } return obj; } } }