Android开发反射学习

/**
 * 通过反射获取未公开的方法
 *
 * @param clazz      需要反射获取的类名
 * @param clsMethod  参数名
 * @param methodName 方法名
 * @param obj        需要赋值的对象
 * @param value      待设置的值
 */
private static void getMethodByReflection(final Class clazz, final Class clsMethod, final String methodName, Object obj, Object value) {
    if (null == clazz || null == clsMethod || null == methodName || null == obj) {
        JLog.e(TAG, "getMethodByReflection has parameter is null ");
        return;
    }

    try {
        Method method = clazz.getDeclaredMethod(methodName, clsMethod);
        // 私有方法赋予权限
        method.setAccessible(true);
        method.invoke(obj, value);
    } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {
        JLog.e(TAG, "getMethodByReflection error: " + e.getMessage());
    }
}

private static void getFieldByReflection(final Class clazz, final String fieldName, Object obj, Object value){
    try {
        Field path = clazz.getDeclaredField(fieldName);
        path.setAccessible(true);//启用私有变量可赋值权限
        path.set(obj,value);
    } catch (NoSuchFieldException|IllegalAccessException e) {
        e.printStackTrace();
    }
}